KS3 CHEMISTRY QUIZZES

Doc B's revising KS3 SCIENCE

Doc Brown's Chemistry

I appreciate SAT levels have gone, but I hope these KS3 chemistry Quizzes will still be of some use. Although I've already produced some combined KS3 chemistry quizzes, I welcome suggestions from teachers so I may produce useful compilation KS3 chemistry quizzes suitable for any school doing KS3 chemistry and any KS3 chemistry scheme of work now that the KS3 chemistry levels and KS3 chemistry SAT exams have gone.

Copying of the KS3 chemistry quizzes is NOT permitted but you can printout the KS3 chemistry questions to use in class or for homework.


GCSE 9-1 Chemistry Notes  *  GCSE 9-1 Biology Notes  *  GCSE 9-1 Physics Notes



KS3 Chemistry and Earth Science Multiple Choice Questions

The KS3 Chemistry Questions are selected at random from big databases.

PLEASE NOTE: (1) <= back on the link bar returns you to the previous web page.

(2) Don't use the usual refresh button on the upper browser to repeat the quiz, use the    REPEAT QUIZ - fresh Q's    on the quiz link bar.

(3) A small proportion questions are deliberately very challenging and more like GCSE level, but only the odd one! and most cover the full range of ability of KS3 science students.


Multiple choice quizzes for KS3 CHEMISTRY & Earth Science  (other quizzes are listed further down the page)

Currently being re-edited and extended to cover the 2018+ National Curriculum for KS3 Science Chemistry

I've left the old work scheme references 7E-H, 8E-H and 9E-H for my own reference.

By each quiz link is a summary of the quiz content.

  1. KS3 Chemistry Quiz - 7E Acids and alkalis QUIZ 7E "Acids and alkalis" Questions on common acids/alkalis - pH scale, indicators, neutralisation reaction, uses etc.

  2. KS3 Chemistry Quiz - 7F Simple chemical reactions QUIZ 7F "Simple chemical reactions" Questions on the idea of chemical reaction (reactants => products), new materials, acid + metal/carbonate reaction, burning/combustion reaction.

  3. KS3 Chemistry Quiz - 7G Particle model of solids, liquids and gases QUIZ 7G "Particle model of solids, liquids and gases" Questions on the explaining the properties of gases, liquids and solids using particle models and state changes. NEW expanded version

  4. KS3 Chemistry Quiz - 7H Solutions QUIZ 7H "Solutions" Questions on particle models of mixtures, rock salt purification,  purification, solute, solvent, solution, solubility, methods of separating mixtures - filtration, evaporation, distillation, chromatography.

  5. KS3 Chemistry Quiz - 8E Atoms and elements QUIZ 8E "Atoms and elements" Questions on elements - different types of atoms making up materials, types of element - metals/non-metals, compounds and molecules, simple chemical reactions.

  6. KS3 Chemistry Quiz - 8F Compounds and mixtures QUIZ 8F "Compounds and mixtures" Questions on comparing the properties and differences between elements, compounds and mixtures, melting and boiling points, idea of pure/impure.

  7. KS3 Chemistry Quiz - 8G Rocks and weathering QUIZ 8G "Rocks and weathering" Questions on properties of rocks, chemical and physical weathering, transport of sediment, formation of sedimentary rocks.

  8. KS3 Chemistry Quiz - 8H The Rock Cycle QUIZ 8H "The Rock Cycle" Questions on the formation of, and differences between, types of rock - sedimentary, igneous and metamorphic rocks, the Rock Cycle.

  9. KS3 Chemistry Quiz - 9E Reactions of metals and metal compounds QUIZ 9E "Reactions of metals and metal compounds" Questions on uses and properties of metals, reaction of metals, metal oxides or metal carbonates with acids, salt preparations.

  10. KS3 Chemistry Quiz - 9F Patterns of reactivity QUIZ 9F "Patterns of reactivity" Questions on reactions of metals with air (oxygen), water and acids, reactivity series of metals, displacement reactions, uses of the reactivity series in predicting the outcome of a reaction and uses of displacement reactions, uses and sources of metals.

  11. KS3 Chemistry Quiz - 9G Environmental chemistry QUIZ 9G "Environmental chemistry" Questions on types of soil, the formation and environmental effects of acid rain, monitoring pollution, global warming.

  12. KS3 Chemistry Quiz - 9H Using chemistry QUIZ 9H "Using chemistry" Questions on burning fuels as energy resources, chemistry of combustion reactions, new materials are made by chemical reactions, useful chemicals like medicines, making a fuel cell.


QCA TOPIC in KS3 CHEMISTRY word-fill worksheets and crossword puzzles


KS3 science-CHEMISTRY 7E Acids and alkalis

KS3 Chemistry guidance notes - 7E Acids and alkalis Summary of the QCA criteria the KS3 Chemistry Quiz - 7E Acids and alkalis quizzes are based on.

KS3 Chemistry 7E Acids and alkalis word-fill worksheets 7Ewf1-4 four handy linked word-fill worksheets * 7Ewf2 * 7Ewf3 * 7Ewf4 *

The BIG hard on-line crossword puzzle KS3 Chemistry crossword puzzle - 7E Acids and alkalis BIG OR the smaller EASIER KS3 Chemistry crossword puzzle - 7E Acids and alkalis SMALL version

matching pair quiz KS3 Chemistry matching pairs Quiz - 7E Acids and alkalis on pH and KS3 Chemistry matching pairs Quiz - Hazard warning symbols on hazard symbols

The 7E crossword and word-fill KS3 Chemistry 7E Acids and alkalis answers to word-fill worksheets and crossword puzzles answers


KS3 science-CHEMISTRY 7F Simple chemical reactions

KS3 Chemistry guidance notes - 7F Simple chemical reactions Summary of the QCA criteria the KS3 Chemistry Quiz - 7F Simple chemical reactions quizzes are based on.

KS3 Chemistry word-fill worksheets - 7F Simple chemical reactions 7Fwf1-4 four handy linked word-fill worksheets * 7Fwf2 * 7Fwf3 * 7Fwf4 *

The BIG hard on-line crossword puzzle KS3 Chemistry 7F Simple chemical reactions crossword puzzle BIG OR the smaller EASIER KS3 Chemistry 7F Simple chemical reactions crossword puzzle SMALL version

The 7F crossword and word-fill KS3 Chemistry 7F Simple chemical reactions answers to word-fill worksheets and crossword puzzles answers


KS3 science-CHEMISTRY 7G Particle model of solids, liquids and gases

KS3 Chemistry guidance notes - 7G Particle model of solids, liquids and gases Summary of the QCA criteria the KS3 Chemistry Quiz - 7G Particle model of solids, liquids and gases quizzes are based on.

KS3 Chemistry word-fill worksheets - 7G Particle model of solids, liquids and gases 7Gwf1-4 four handy linked word-fill worksheets * 7Gwf2 * 7Gwf3 * 7Gwf4 *

The BIG hard on-line crossword puzzle KS3 Chemistry crossword puzzle - 7G Particle model of solids, liquids and gases BIG OR the smaller EASIER KS3 Chemistry crossword puzzle - 7G Particle model of solids, liquids and gases SMALL version

3 linked matching pair exercises on the states of matter KS3 Chemistry matching pairs Quiz - 7G Particle model of solids, liquids and gases and * States2mp and States3mp

The 7G crossword and word-fill KS3 Chemistry 7G Particle model of solids, liquids and gases answers to word-fill worksheets and crossword puzzles answers


KS3 science-CHEMISTRY 7H Solutions (solubility, salt purification and chromatography etc.)

KS3 Chemistry guidance notes - 7H Solutions (solubility, salt purification and chromatography etc.) Summary of the QCA criteria the KS3 Chemistry Quiz - 7H Solutions quizzes are based on.

KS3 Chemistry word-fill worksheets - 7H Solutions (solubility, salt purification and chromatography etc.) 7Hwf1-4 four handy linked word-fill worksheets * 7Hwf2 * 7Hwf3 * 7Hwf4 *

The BIG hard on-line crossword puzzle KS3 Chemistry crossword puzzle BIG - 7H Solutions (solubility, salt purification and chromatography etc.) OR the smaller EASIER KS3 Chemistry crossword puzzle SMALL - 7H Solutions (solubility, salt purification and chromatography etc.) version

KS3 Chemistry matching pairs Quiz - 7H Solutions (solubility, salt purification and chromatography etc.) matching pair exercise on keywords

The 7H crossword and word-fill KS3 Chemistry 7H Solutions (solubility, salt purification and chromatography etc.) answers to word-fill worksheets and crossword puzzles answers


KS3 science-CHEMISTRY 8E Atoms and elements

KS3 Chemistry guidance notes - 8E Atoms and elements Summary of the QCA criteria the KS3 Chemistry Quiz - 8E Atoms and elements quizzes are based on.

KS3 Chemistry word-fill worksheets - 8E Atoms and elements 8Ewf1-4 four handy linked word-fill worksheets * 8Ewf2 * 8Ewf3 * 8Ewf4 *

The BIG hard on-line crossword puzzle KS3 Chemistry crossword puzzle BIG - 8E Atoms and elements OR the smaller EASIER KS3 Chemistry crossword puzzle SMALL - 8E Atoms and elements version

KS3 Chemistry element name/symbol Quiz type in element symbol/name quiz

The 8E crossword and word-fill KS3 Chemistry 8E Atoms and elements answers to word-fill worksheets and crossword puzzles answers


KS3 science-CHEMISTRY 8F Compounds and mixtures

KS3 Chemistry guidance notes - 8F Compounds and mixtures Summary of the QCA criteria the KS3 Chemistry Quiz - 8F Compounds and mixtures quizzes are based on.

KS3 Chemistry word-fill worksheets - 8F Compounds and mixtures 8Fwf1-5 five handy linked word-fill worksheets * 8Fwf2 * 8Fwf3 * 8Fwf4 * 8Fwf5 *

The BIG hard on-line crossword puzzle KS3 Chemistry crossword puzzle BIG - 8F Compounds and mixtures OR the smaller EASIER KS3 Chemistry crossword puzzle SMALL - 8F Compounds and mixtures version

KS3 Chemistry matching pairs Quiz - 8F Compounds and mixtures matching pair picture quiz on elements, compounds and mixtures

The 8F crossword and word-fill KS3 Chemistry 8F Compounds and mixtures answers to word-fill worksheets and crossword puzzles answers


KS3 science-CHEMISTRY 8G Rocks and weathering

KS3 Chemistry guidance notes - 8G Rocks and weathering Summary of the QCA criteria the KS3 Chemistry Quiz - 8G Rocks and weathering quizzes are based on.

KS3 Chemistry word-fill worksheets - 8G Rocks and weathering 8Gwf1-4 four handy linked word-fill worksheets * 8Gwf2 * 8Gwf3 * 8Gwf4 *

The BIG hard on-line crossword puzzle KS3 Chemistry crossword puzzle BIG - 8G Rocks and weathering OR the smaller EASIER KS3 Chemistry crossword puzzle SMALL - 8G Rocks and weathering version

The 8G crossword and word-fill KS3 Chemistry 8G Rocks and weathering answers to word-fill worksheets and crossword puzzles answers


KS3 science-CHEMISTRY 8H The Rock Cycle

KS3 Chemistry guidance notes - 8H The Rock Cycle Summary of the QCA criteria the KS3 Chemistry Quiz - 8H The Rock Cycle quizzes are based on.

KS3 Chemistry word-fill worksheets - 8H The Rock Cycle 8Hwf1-4 four handy linked word-fill worksheets * 8Hwf2 * 8Hwf3 * 8Hwf4 *

The BIG hard on-line crossword puzzle KS3 Chemistry crossword puzzle BIG - 8H The Rock Cycle OR the smaller EASIER KS3 Chemistry crossword puzzle SMALL - 8H The Rock Cycle version

KS3 Chemistry matching pairs Quiz - 8H The Rock Cycle matching pair exercise on rock types

The 8H crossword and word-fill KS3 Chemistry 8H The Rock Cycle answers to word-fill worksheets and crossword puzzles answers


KS3 science-CHEMISTRY 9E Reactions of metals and metal compounds

KS3 Chemistry guidance notes - 9E Reactions of metals and metal compounds Summary of the QCA criteria the KS3 Chemistry Quiz - 9E Reactions of metals and metal compounds quizzes are based on.

KS3 Chemistry word-fill worksheets - 9E Reactions of metals and metal compounds 9Ewf1-5 five handy linked word-fill worksheets * 9Ewf2 * 9Ewf3 * 9Ewf4 * 9Ewf5 *

The BIG hard on-line crossword puzzle KS3 Chemistry crossword puzzle BIG - 9E Reactions of metals and metal compounds OR the smaller EASIER KS3 Chemistry crossword puzzle SMALL - 9E Reactions of metals and metal compounds version

The 9E crossword and word-fill KS3 Chemistry 9E Reactions of metals and metal compounds answers to word-fill worksheets and crossword puzzles answers


KS3 science-CHEMISTRY 9F Patterns of reactivity

KS3 Chemistry guidance notes - 9F Patterns of reactivity Summary of the QCA criteria the KS3 Chemistry Quiz - 9F Patterns of reactivity quizzes are based on.

KS3 Chemistry word-fill worksheets - 9F Patterns of reactivity 9Fwf1-6 six handy linked word-fill worksheets * 9Fwf2 * 9Fwf3 * 9Fwf4 * 9Fwf5 * 9Fwf6 *

The BIG hard on-line crossword puzzle KS3 Chemistry crossword puzzle BIG - 9F Patterns of reactivity OR the smaller EASIER KS3 Chemistry crossword puzzle SMALL - 9F Patterns of reactivity answers

The 9F crossword and word-fill KS3 Chemistry 9F Patterns of reactivity answers to word-fill worksheets and crossword puzzles answers


KS3 science-CHEMISTRY 9G Environmental chemistry

KS3 Chemistry guidance notes - 9G Environmental chemistry Summary of the QCA criteria the KS3 Chemistry Quiz - 9G Environmental chemistry quizzes are based on.

KS3 Chemistry word-fill worksheets - 9G Environmental chemistry 9Gwf1-3 handy linked word-fill worksheets * 9Gwf2 * 9Gwf3 *

The BIG hard on-line crossword puzzle KS3 Chemistry crossword puzzle BIG - 9G Environmental chemistry OR the smaller EASIER KS3 Chemistry crossword puzzle SMALL - 9G Environmental chemistry version

The 9G crossword and word-fill KS3 Chemistry 9G Environmental chemistry answers to word-fill worksheets and crossword puzzles answers


KS3 science-CHEMISTRY 9H Using chemistry

KS3 Chemistry guidance notes - 9H Using chemistry Summary of the QCA criteria the KS3 Chemistry Quiz - 9H Using chemistry quizzes are based on.

KS3 Chemistry word-fill worksheets - 9H Using chemistry 9Hwf1-4 four handy linked word-fill worksheets * 9Hwf2 * 9Hwf3 * 9Hwf4 *

The BIG on-line crossword puzzle KS3 Chemistry crossword puzzle BIG - 9H Using chemistry OR the smaller EASIER KS3 Chemistry crossword puzzle SMALL - 9H Using chemistry version

The 9H crossword and word-fill KS3 Chemistry 9H Using chemistry answers to word-fill worksheets and crossword puzzles answers


SEE ALSO the KS3 Science Quiz compilations

20 Question multiple choice QUIZ on  ORGANISMS, BEHAVIOUR and HEALTH

20 Question multiple choice QUIZ on CHEMICAL and MATERIAL BEHAVIOUR

20 Question multiple choice QUIZ on ENERGY, ELECTRICITY and FORCES

20 Question multiple choice QUIZ on THE ENVIRONMENT, EARTH and UNIVERSE


National Curriculum KS3 Science CHEMISTRY specification

Subject content – KS3 Chemistry Pupils should be taught about:

KS3 chemistry: The particulate nature of matter     (National Curriculum KS3 science-chemistry)

the properties of the different states of matter (solid, liquid and gas) in terms of the particle model, including gas pressure,

changes of state in terms of the particle model.

KS3 chemistry: Atoms, elements and compounds     (National Curriculum KS3 science-chemistry)

a simple (Dalton) atomic model,

differences between atoms, elements and compounds,

chemical symbols and formulae for elements and compounds,

conservation of mass changes of state and chemical reactions.

KS3 chemistry: Pure and impure substances     (National Curriculum KS3 science-chemistry)

the concept of a pure substance,

mixtures, including dissolving,

diffusion in terms of the particle model,

simple techniques for separating mixtures: filtration, evaporation, distillation and chromatography

the identification of pure substances.

KS3 chemistry: Chemical reactions     (National Curriculum KS3 science-chemistry)

chemical reactions as the rearrangement of atoms,

representing chemical reactions using formulae and using equations,

combustion, thermal decomposition, oxidation and displacement reactions,

defining acids and alkalis in terms of neutralisation reactions,

the pH scale for measuring acidity/alkalinity; and indicators,

reactions of acids with metals to produce a salt plus hydrogen,

reactions of acids with alkalis to produce a salt plus water,

what catalysts do.

KS3 chemistry: Energetics     (National Curriculum KS3 science-chemistry)

energy changes on changes of state (qualitative),

exothermic and endothermic chemical reactions (qualitative).

KS3 chemistry: The Periodic Table     (National Curriculum KS3 science-chemistry)

the varying physical and chemical properties of different elements,

the principles underpinning the Mendeleev Periodic Table,

the Periodic Table: periods and groups; metals and non-metals,

how patterns in reactions can be predicted with reference to the Periodic Table,

the properties of metals and non-metals,

the chemical properties of metal and non-metal oxides with respect to acidity.

KS3 chemistry: Materials     (National Curriculum KS3 science-chemistry)

the order of metals and carbon in the reactivity series,

the use of carbon in obtaining metals from metal oxides,

properties of ceramics, polymers and composites (qualitative).

KS3 chemistry: Earth and atmosphere     (National Curriculum KS3 science-chemistry)

the composition of the Earth,

the structure of the Earth,

the rock cycle and the formation of igneous, sedimentary and metamorphic rocks,

Earth as a source of limited resources and the efficacy of recycling,

the carbon cycle,

the composition of the atmosphere,

the production of carbon dioxide by human activity and the impact on climate.


AQA KS3 Science Chemistry Specification

AQA KS3 chemistry 3.5 Matter

3.5.1 Particle model

Relate the features of the particle model to the properties of materials in different states

AQA KS3 chemistry Know

Properties of solids, liquids and gases can be described in terms of particles in motion but with differences in the arrangement and movement of these same particles: closely spaced and vibrating (solid), in random motion but in contact (liquid), or in random motion and widely spaced (gas).

Observations where substances change temperature or state can be described in terms of particles gaining or losing energy.

Fact A substance is a solid below its melting point, a liquid above it, and a gas above its boiling point.

Keywords

Particle: A very tiny object such as an atom or molecule, too small to be seen with a microscope.

Particle model: A way to think about how substances behave in terms of small, moving particles.

Diffusion: The process by which particles in liquids or gases spread out through random movement from a region where there are many particles to one where there are fewer.

Gas pressure: Caused by collisions of particles with the walls of a container.

Density: How much matter there is in a particular volume, or how close the particles are.

Evaporate: Change from liquid to gas at the surface of a liquid, at any temperature.

Boil: Change from liquid to a gas of all the liquid when the temperature reaches boiling point.

Condense: Change of state from gas to liquid when the temperature drops to the boiling point.

Melt: Change from solid to liquid when the temperature rises to the melting point.

Freeze: Change from liquid to a solid when the temperature drops to the melting point.

Sublime: Change from a solid directly into a gas.

AQA KS3 chemistry Apply

Explain unfamiliar observations about gas pressure in terms of particles.

Explain the properties of solids, liquids and gases based on the arrangement and movement of their particles.

Explain changes in states in terms of changes to the energy of particles.

Draw before and after diagrams of particles to explain observations about changes of state, gas pressure and diffusion.

AQA KS3 chemistry Extend

Argue for how to classify substances which behave unusually as solids, liquids or gases.

Evaluate observations that provide evidence for the existence of particles.

Make predictions about what will happen during unfamiliar physical processes, in terms of particles and their energy.
 

3.5.2 Separating mixtures Devise ways to separate mixtures, based on their properties

AQA KS3 chemistry Know

A pure substance consists of only one type of element or compound and has a fixed melting and boiling point.

Mixtures may be separated due to differences in their physical properties.

The method chosen to separate a mixture depends on which physical properties of the individual substances are different.

Skill Use techniques to separate mixtures.

Fact Air, fruit juice, sea water and milk are mixtures. Liquids have different boiling points.

Keywords

Solvent: A substance, normally a liquid, that dissolves another substance.

Solute: A substance that can dissolve in a liquid.

Dissolve: When a solute mixes completely with a solvent.

Solution: Mixture formed when a solvent dissolves a solute.

Soluble (insoluble): Property of a substance that will (will not) dissolve in a liquid.

Solubility: Maximum mass of solute that dissolves in a certain volume of solvent.

Pure substance: Single type of material with nothing mixed in.

Mixture: Two or more pure substances mixed together, whose properties are different to the individual substances.

Filtration: Separating substances using a filter to produce a filtrate (solution) and residue.

Distillation: Separating substances by boiling and condensing liquids.

Evaporation: A way to separate a solid dissolved in a liquid by the liquid turning into a gas.

Chromatography: Used to separate different coloured substances.

 AQA KS3 chemistry Apply

Explain how substances dissolve using the particle model.

Use the solubility curve of a solute to explain observations about solutions.

Use evidence from chromatography to identify unknown substances in mixtures.

Choose the most suitable technique to separate out a mixture of substances

AQA KS3 chemistry Extend

Analyse and interpret solubility curves.

Suggest a combination of methods to separate a complex mixture and justify the choices.

Evaluate the evidence for identifying a unknown substance using separating techniques.
 

3.5.3 Periodic table Sort elements using chemical data and relate this to their position in the periodic table

AQA KS3 chemistry Know

The elements in a group all react in a similar way and sometimes show a pattern in reactivity.

As you go down a group and across a period the elements show patterns in physical properties.

Facts

Metals are generally found on the left side of the table, non-metals on the right.

Group 1 contains reactive metals called alkali metals.

Group 7 contains non-metals called halogens.

Group 0 contains unreactive gases called noble gases.

Keywords

Periodic table: Shows all the elements arranged in rows and columns.

Physical properties: Features of a substance that can be observed without changing the substance itself.

Chemical properties: Features of the way a substance reacts with other substances.

Groups: Columns of the periodic table.

Periods: Rows of the periodic table.

AQA KS3 chemistry Apply

Use data to describe a trend in physical properties.

Describe the reaction of an unfamiliar Group 1 or 7 element.

Use data showing a pattern in physical properties to estimate a missing value for an element.

Use observations of a pattern in chemical reactions to predict the behaviour of an element in a group.

AQA KS3 chemistry Extend

Predict the position of an element in the periodic table based on information about its physical and chemical properties.

Choose elements for different uses from their position in the periodic table.

Use data about the properties of elements to find similarities, patterns and anomalies.
 

3.5.4 Elements Compare the properties of elements with the properties of a compound formed from them

AQA KS3 chemistry Know

Most substances are not pure elements, but compounds or mixtures containing atoms of different elements.

They have different properties to the elements they contain.

Skills

Use particle diagrams to classify a substance as an element, mixture or compound and as molecules or atoms.

Name simple compounds using rules: change non-metal to –ide; mono, di, tri prefixes; and symbols of hydroxide, nitrate, sulfate and carbonate.

Fact The symbols of hydrogen, oxygen, nitrogen, carbon, hydrogen, iron, zinc, copper, sulfur, aluminium, iodine, bromine, chlorine, sodium, potassium and magnesium.

Keywords

Elements: What all substances are made up of, and which contain only one type of atom.

Atom: The smallest particle of an element that can exist.

Molecules: Two to thousands of atoms joined together.

Most non-metals exist either as small or giant molecules.

Compound: Pure substances made up of two or more elements strongly joined together.

Chemical formula: Shows the elements present in a compound and their relative proportions.

Polymer: A molecule made of thousands of smaller molecules in a repeating pattern.

Plastics are man-made polymers, starch is a natural polymer.
 

AQA KS3 chemistry Apply

Name compounds using their chemical formulae.

Given chemical formulae, name the elements present and their relative proportions.

Represent atoms, molecules and elements, mixtures and compounds using particle diagrams.

Use observations from chemical reactions to decide if an unknown substance is an element or a compound.

AQA KS3 chemistry Extend

Use particle diagrams to predict physical properties of elements and compounds.

Deduce a pattern in the formula of similar compounds and use it to suggest formulae for unfamiliar ones.

Compare and contrast the properties of elements and compounds and give a reason for their differences.

Describe and explain the properties of ceramics and composites.
 

3.6 Reactions

3.6.1 Metals and non-metals Use experimental results to suggest an order of reactivity of various metals

AQA KS3 chemistry Know

Metals and non-metals react with oxygen to form oxides which are either bases or acids.

Metals can be arranged as a reactivity series in order of how readily they react with other substances.

Some metals react with acids to produce salts and hydrogen.

Facts

Iron, nickel and cobalt are magnetic elements.

Mercury is a metal that is liquid at room temperature.

Bromine is a non-metal that is liquid at room temperature.

Keywords

Metals: Shiny, good conductors of electricity and heat, malleable and ductile, and usually solid at room temperature.

Non-metals: Dull, poor conductors of electricity and heat, brittle and usually solid or gaseous at room temperature.

Displacement: Reaction where a more reactive metal takes the place of a less reactive metal in a compound.

Oxidation: Reaction in which a substance combines with oxygen.

Reactivity: The tendency of a substance to undergo a chemical reaction.

AQA KS3 chemistry Apply

Describe an oxidation, displacement, or metal acid reaction with a word equation.

Use particle diagrams to represent oxidation, displacement and metal-acid reactions.

Identify an unknown element from its physical and chemical properties.

Place an unfamiliar metal into the reactivity series based on information about its reactions.

AQA KS3 chemistry Extend

Deduce the physical or chemical changes a metal has undergone from its appearance.

Justify the use of specific metals and non-metals for different applications, using data provided.

Deduce a rule from data about which reactions will occur or not, based on the reactivity series.
 

AQA KS3 chemistry 3.6.2 Acids and alkalis

AQA KS3 chemistry Devise an enquiry to compare how well indigestion remedies work

AQA KS3 chemistry Know

The pH of a solution depends on the strength of the acid: strong acids have lower pH values than weak acids.

Mixing an acid and alkali produces a chemical reaction, neutralisation, forming a chemical called a salt and water.

Facts

Acids have a pH below 7, neutral solutions have a pH of 7, alkalis have a pH above 7.

Acids and alkalis can be corrosive or irritant and require safe handling.

Hydrochloric, sulfuric and nitric acid are strong acids.

Acetic and citric acid are weak acids.

Keywords

pH: Scale of acidity and alkalinity from 0 to 14.

Indicators: Substances used to identify whether unknown solutions are acidic or alkaline.

Base: A substance that neutralises an acid – those that dissolve in water are called alkalis.

Concentration: A measure of the number of particles in a given volume.
 

AQA KS3 chemistry Apply

Identify the best indicator to distinguish between solutions of different pH, using data provided.

Use data and observations to determine the pH of a solution and explain what this shows.

Explain how neutralisation reactions are used in a range of situations.

Describe a method for how to make a neutral solution from an acid and alkali.

AQA KS3 chemistry Extend

Given the names of an acid and an alkali, work out the name of the salt produced when they react.

Deduce the hazards of different alkalis and acids using data about their concentration and pH.

Estimate the pH of an acid based on information from reactions.
 

AQA KS3 chemistry 3.6.3 Chemical energy

AQA KS3 chemistry Investigate a phenomenon that relies on an exothermic or endothermic reaction

AQA KS3 chemistry Know

During a chemical reaction bonds are broken (requiring energy) and new bonds formed (releasing energy).

If the energy released is greater than the energy required, the reaction is exothermic.

If the reverse, it is endothermic.

Keywords

Catalysts: Substances that speed up chemical reactions but are unchanged at the end.

Exothermic reaction: One in which energy is given out, usually as heat or light.

Endothermic reaction: One in which energy is taken in, usually as heat.

Chemical bond: Force that holds atoms together in molecules.

AQA KS3 chemistry Apply

Use experimental observations to distinguish exothermic and endothermic reactions.

Use a diagram of relative energy levels of particles to explain energy changes observed during a change of state.

AQA KS3 chemistry Extend

Predict whether a chemical reaction will be exothermic or endothermic given data on bond strengths.

Use energy data to select a reaction for a chemical hand warmer or cool pack.
 

AQA KS3 chemistry 3.6.4 Types of reaction

AQA KS3 chemistry Investigate changes in mass for chemical and physical processes

AQA KS3 chemistry Know

Combustion is a reaction with oxygen in which energy is transferred to the surroundings as heat and light.

Thermal decomposition is a reaction where a single reactant is broken down into simpler products by heating.

Chemical changes can be described by a model where atoms and molecules in reactants rearrange to make the products and the total number of atoms is conserved.

Skill Write word equations from information about chemical reactions.

Keywords

Fuel: Stores energy in a chemical store which it can release as heat.

Chemical reaction: A change in which a new substance is formed.

Physical change: One that changes the physical properties of a substance, but no new substance is formed.

Reactants: Substances that react together, shown before the arrow in an equation.

Products: Substances formed in a chemical reaction, shown after the reaction arrow in an equation.

Conserved: When the quantity of something does not change after a process takes place.

AQA KS3 chemistry Apply

Explain why a reaction is an example of combustion or thermal decomposition.

Predict the products of the combustion or thermal decomposition of a given reactant and show the reaction as a word equation.

Explain observations about mass in a chemical or physical change. Use particle diagrams to show what happens in a reaction.

AQA KS3 chemistry Extend

Compare the pros and cons of fuels in terms of their products of combustion.

Use known masses of reactants or products to calculate unknown masses of the remaining reactant or product.

Devise a general rule for how a set of compounds reacts with oxygen or thermally decomposes.

Balance a symbol equation.

Use mass of reactant in equation to determine mass of product eg magnesium and oxygen.
 

AQA KS3 chemistry 3.7 Earth

AQA KS3 chemistry 3.7.1 Earth structure

Model the processes that are responsible for rock formation and link these to the rock features

AQA KS3 chemistry Know

Sedimentary, igneous and metamorphic rocks can be inter converted over millions of years through weathering and erosion, heat and pressure, and melting and cooling.

Fact The three rock layers inside Earth are the crust, the mantle and the core.

Keywords

Rock cycle: Sequence of processes where rocks change from one type to another.

Weathering: The wearing down of rock by physical, chemical or biological processes.

Erosion: Movement of rock by water, ice or wind (transportation).

Minerals: Chemicals that rocks are made from.

Sedimentary rocks: Formed from layers of sediment, and which can contain fossils. Examples are limestone, chalk and sandstone.

Igneous rocks: Formed from cooled magma, with minerals arranged in crystals. Examples are granite, basalt and obsidian.

Metamorphic rocks: Formed from existing rocks exposed to heat and pressure over a long time. Examples are marble, slate and schist.

Strata: Layers of sedimentary rock.

AQA KS3 chemistry Apply

Explain why a rock has a particular property based on how it was formed.

Identify the causes of weathering and erosion and describe how they occur.

Construct a labelled diagram to identify the processes of the rock cycle.

AQA KS3 chemistry Extend

Identify circumstances that indicate fast processes of change on Earth and those that indicate slower processes.

Predict planetary conditions from descriptions of rocks on other planets.

Describe similarities and differences between the rock cycle and everyday physical and chemical processes.

Suggest how ceramics might be similar to some types of rock.
 

AQA KS3 chemistry 3.7.2 Universe

Relate observations of changing day length to an appropriate model of the solar system

AQA KS3 chemistry Know

The solar system can be modelled as planets rotating on tilted axes while orbiting the Sun, moons orbiting planets and sunlight spreading out and being reflected.

This explains day and year length, seasons and the visibility of objects from Earth.

Our solar system is a tiny part of a galaxy, one of many billions in the Universe.

Light takes minutes to reach Earth from the Sun, four years from our nearest star and billions of years from other galaxies.

Keywords

Galaxy: Collection of stars held together by gravity. Our galaxy is called the Milky Way.

Light year: The distance light travels in a year (over 9 million, million kilometres).

Stars: Bodies which give out light, and which may have a solar system of planets.

Orbit: Path taken by a satellite, planet or star moving around a larger body.

Earth completes one orbit of the Sun every year.

Exoplanet: Planet that orbits a star outside our solar system.

AQA KS3 chemistry Apply

Describe the appearance of planets or moons from diagrams showing their position in relation to the Earth and Sun.

Explain why places on the Earth experience different daylight hours and amounts of sunlight during the year.

Describe how space exploration and observations of stars are affected by the scale of the universe.

Explain the choice of particular units for measuring distance.
 

AQA KS3 chemistry Extend

Predict patterns in day length, the Sun’s intensity or an object’s shadow at different latitudes.

Make deductions from observation data of planets, stars and galaxies.

Compare explanations from different periods in history about the motion of objects and structure of the Universe.
 

AQA KS3 chemistry 3.7.3 Climate

Investigate the contribution that natural and human chemical processes make to our carbon dioxide emissions

AQA KS3 chemistry Know

Carbon is recycled through natural processes in the atmosphere, ecosystems, oceans and the Earth’s crust (such as photosynthesis and respiration) as well as human activities (burning fuels).

Greenhouse gases reduce the amount of energy lost from the Earth through radiation and therefore the temperature has been rising as the concentration of those gases has risen.

Scientists have evidence that global warming caused by human activity is causing changes in climate.

Facts

Methane and carbon dioxide are greenhouse gases.

Earth’s atmosphere contains around 78 % nitrogen, 21 % oxygen, <1 % carbon dioxide, plus small amounts of other gases.

Keywords

Global warming: The gradual increase in surface temperature of the Earth.

Fossil fuels: Remains of dead organisms that are burned as fuels, releasing carbon dioxide.

Carbon sink: Areas of vegetation, the ocean or the soil, which absorb and store carbon.

Greenhouse effect: When energy from the sun is transferred to the thermal energy store of gases in Earth’s atmosphere.

AQA KS3 chemistry Apply

Use a diagram to show how carbon is recycled in the environment and through living things.

Describe how human activities affect the carbon cycle.

Describe how global warming can impact on climate and local weather patterns.

AQA KS3 chemistry Extend

Evaluate the implications of a proposal to reduce carbon emissions.

Evaluate claims that human activity is causing global warming or climate change.

Compare the relative effects of human-produced and natural global warming.
 

AQA KS3 chemistry 3.7.4 Earth resources

Predict the method used for extracting metal based on its position in the reactivity series

AQA KS3 chemistry Know

There is only a certain quantity of any resource on Earth, so the faster it is extracted, the sooner it will run out. Recycling reduces the need to extract resources.

Most metals are found combined with other elements, as a compound, in ores.

The more reactive a metal, the more difficult it is to separate it from its compound.

Carbon displaces less reactive metals, while electrolysis is needed for more reactive metals.

Keywords

Natural resources: Materials from the Earth which act as raw materials for making a variety of products.

Mineral: Naturally occurring metal or metal compound.

Ore: Naturally occurring rock containing sufficient minerals for extraction.

Extraction: Separation of a metal from a metal compound.

Recycling: Processing a material so that it can be used again.

Electrolysis: Using electricity to split up a compound into its elements.

AQA KS3 chemistry Apply

Explain why recycling of some materials is particularly important.

Describe how Earth’s resources are turned into useful materials or recycled.

Justify the choice of extraction method for a metal, given data about reactivity.

Suggest factors to take into account when deciding whether extraction of a metal is practical.
 

AQA KS3 chemistry Extend

Suggest ways in which changes in behaviour and the use of alternative materials may limit the consumption of natural resources.

Suggest ways in which waste products from industrial processes could be reduced.

Use data to evaluate proposals for recycling materials.
 


OCR Twenty First Century Science knowledge and understanding expected before GCSE Chemistry

Chapter C1 Air and water 

What you will learn about air and water  from KS3 Chemistry before GCSE sciences

From study at Key Stages 1 to 3 you will learn:

• be able to explain the properties of the different states of matter (solid, liquid and gas) in terms of the particle model, including gas pressure

• appreciate the differences between atoms, elements and compounds

• be familiar with the use of chemical symbols and formulae for elements and compounds

• know about conservation of mass, changes of state and chemical reactions

• be able to explain changes of state in terms of the particle model

• know that there are energy changes on changes of state (qualitative)

• know about exothermic and endothermic chemical reactions (qualitative)

• understand the carbon cycle

• know the composition of the Earth’s atmosphere today

• know about the production of carbon dioxide by human activity and its impact on climate.

 

Chapter C2: Chemical patterns

What you will learn about Chemical Patterns  from KS3 Chemistry before GCSE sciences

From study at Key Stages 1 to 3 you will learn :

• know the properties of the different states of matter (solid, liquid and gas) in terms of the particle model, including gas pressure

• know changes of state in terms of the particle model

• be aware of a simple (Dalton) atomic model

• know differences between atoms, elements and compounds

• know chemical symbols and formulae for elements and compounds

• know conservation of mass in changes of state and chemical reactions

• understand chemical reactions as the rearrangement of atoms

• be able to represent chemical reactions using formulae and using equations

• know some displacement reactions

• know what catalysts do

• be aware of the principles underpinning the Mendeleev Periodic Table

• know some ideas about the Periodic Table: periods and groups; metals and non-metals

• know how some patterns in reactions can be predicted with reference to the Periodic Table

• know some properties of metals and non-metals.

 

Chapter C3: Chemicals of the natural environment   

What you will learn about chemicals of the natural environment from KS3 Chemistry before GCSE sciences

From study at Key Stages 1 to 3 you will learn

• know the differences between atoms, elements and compounds

• be familiar with the use of chemical symbols and formulae for elements and compounds

• be familiar with the use of formulae and equations to represent chemical reactions

• understand chemical reactions as the rearrangement of atoms

• know about reactions of acids with metals to produce a salt plus hydrogen

• know some displacement reactions

• know the order of metals and carbon in the reactivity series

• know that carbon is used to obtain metals from metal oxides.

 

C4 Material choices

What you will learn about material choices from KS3 Chemistry before GCSE sciences

From study at Key Stages 1 to 3 you should:

• distinguish between an object and the material from which it is made

• identify and name a variety of everyday materials, including wood, plastic, glass, metal, water, and rock

• describe the simple physical properties of a variety of everyday materials

• compare and group together a variety of everyday materials on the basis of their simple physical properties.

• have observed that some materials change state when they are heated or cooled, and measured the temperature at which this happens in degrees Celsius (°C)

• compare and group together everyday materials on the basis of their properties, including their hardness, solubility, transparency, conductivity (electrical and thermal), and response to magnets

• identify and compare the suitability of a variety of everyday materials, including wood, metal, plastic, glass, brick, rock, paper and cardboard for particular use

• know the differences between atoms, elements and compounds

• recognise chemical symbols and formulae for some elements and compounds

• know about the properties of ceramics, polymers and composites (qualitative)

 

Chapter C5 Chemical analysis

What you will learn about chemical analysis  from KS3 Chemistry before GCSE sciences

From study at Key Stages 1 to 3 you should:

• use knowledge of solids, liquids and gases to decide how mixtures might be separated, including through filtering, sieving and evaporating

• understand the concept of a pure substance and how to identify a pure substance

• know about simple techniques for separating mixtures: filtration, evaporation, distillation and chromatography

• know about the pH scale for measuring acidity/ alkalinity; and indicators.

 

Chapter C6 Making useful chemicals

What you will learn about Making useful Chemicals from KS3 Chemistry before GCSE sciences

From study at Key Stages 1 to 3 you should:

• explain that some changes result in the formation of new materials, and that this kind of change is not usually reversible

• represent chemical reactions using formulae and using equations

• define acids and alkalis in terms of neutralisation reactions

• describe the pH scale for measuring acidity/ alkalinity; and indicators

• recall reactions of acids with metals to produce a salt plus hydrogen and reactions of acids with alkalis to produce a salt plus water

• know what catalysts do.

• know about energy changes on changes of state (qualitative)

• know about exothermic and endothermic chemical reactions (qualitative).

 


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