Quiz on Resources, useful products from chemistry, environment sources of pollution KS3 science practice exam questions for AQA, Edexcel & OCR KS3 chemistry KS3 science courses

Which statement is generally TRUE about soil? [9g-1]
1. sandy soil has larger rock particles and is well drained
2. clay soil has plenty of air in it and thriving with living organisms
3. plant roots tend to break up soil and cause erosion
4. humus is formed from fine rock particles and contains few nutrients
Which statement is generally TRUE about soil? [9g-2]
1. sandy soil has small rock particles and is poorly drained
2. clay soil has little air in it and few living organisms
3. plant roots tend to break up soil and cause erosion
4. humus is formed from fine rock particles and contains few nutrients
Which statement is generally TRUE about soil and plant roots? [9g-3]
1. sandy soil has small rock particles and is poorly drained
2. clay soil has plenty of air in it and thriving with living organisms
3. plant roots do not usually cause erosion, but anchor the plant in the ground and absorb important minerals and other nutrients
4. humus is formed from fine rock particles and contains few nutrients
Which statement is generally TRUE about soil? [9g-4]
1. sandy soil has small rock particles and is poorly drained
2. clay soil has plenty of air in it and thriving with living organisms
3. plant roots tend to break up soil and cause erosion
4. humus is formed from organic material and is rich in nutrients
Which statement is generally TRUE about soil? [9g-5]
1. loam is a good soil which drains well and is rich in nutrients
2. organisms like worms only help circulate water
3. most soils have a pH between 1 and 4
4. lime is used to treat soil that is too alkaline
Which statement is generally TRUE about soil? [9g-6]
1. loam is a poor soil which drains poorly and is low in nutrients
2. organisms like worms help circulate air
3. most soils have a pH between 1 and 4
4. lime is used to treat soil that is too alkaline
Which statement is generally TRUE about soil? [9g-7]
1. loam is a poor soil which drains poorly and is low in nutrients
2. organisms like worms help circulate water
3. most soils have a pH between 4.5 and 7.5
4. lime is used to treat soil that is too alkaline
Which statement is generally TRUE about soil? [9g-8]
1. loam is a poor soil which drains poorly and is low in nutrients
2. organisms like worms help circulate water
3. most soils have a pH between 7 and 12
4. lime is used to treat soil that is too acid
Which is generally TRUE about the weathering of buildings and walls? [9g-9]
1. the growth of tree roots can cause considerable damage to buildings
2. porous stone does not weather easily due to rainwater quickly running off
3. styles over walls for walkers cause no erosion problems
4. the higher the pH of rain, the more erosion it causes
Which is generally TRUE about the weathering of buildings and walls? [9g-10]
1. the growth of tree cannot cause damage to buildings
2. porous stone weathers easily due to absorbed rainwater
3. styles over walls for walkers cause erosion problems
4. the higher the pH of rain, the more erosion it causes
Which is generally TRUE about the weathering of buildings and walls? [9g-11]
1. the growth of tree cannot cause damage to buildings
2. porous stone does not weather easily due to rainwater quickly running off
3. styles over walls for walkers do not cause erosion problems
4. the higher the pH of rain, the more erosion it causes
Which is generally TRUE about the weathering of buildings and walls? [9g-12]
1. the growth of tree cannot cause damage to buildings
2. porous stone does not weather easily due to rainwater quickly running off
3. styles over walls for walkers cause erosion problems
4. the lower the pH of rain, the more erosion it causes
Which of these is the main source of sulfur dioxide that causes acid rain? [9g-13]
1. burning fossil fuels
2. earthquake activity
3. nuclear power stations
4. severe electrical storms
Which of these is a source of sulfur dioxide which causes acid rain? [9g-14]
1. burning hydrogen fuel gas
2. volcanic activity
3. nuclear power stations
4. severe electrical storms
Which building material is least likely to be rapidly eroded by acid rain? [9g-15]
1. limestone
2. marble
3. granite
4. sandstone
Which building material is least likely to be rapidly eroded by acid rain? [9g-16]
1. limestone
2. sandstone
3. marble
4. slate
Which building material is likely to be the most rapidly eroded by acid rain? [9g-17]
1. limestone
2. granite
3. basalt
4. slate
Which building material is most likely to be most rapidly eroded by acid rain? [9g-18]
1. granite
2. marble
3. basalt
4. slate
Which is used for the rapid treatment of lakes which are to acid for most aquatic life? [9g-19]
1. sand grains
2. marble chips
3. powdered lime
4. peat
Which of these is a fossil fuel for power stations? [9g-20]
1. uranium
2. hydrogen
3. wood
4. coal
Which of these is a fossil fuel for power stations? [9g-21]
1. oil
2. hydrogen
3. wood
4. uranium
Which of these is a fossil fuel for power stations? [9g-22]
1. hydrogen
2. natural gas
3. wood
4. uranium
Which best describes the formation of a fossil fuel? [9g-23]
1. charred remains of plants or animals
2. partial oxidation decay of plant and animal remains
3. decay of buried plant or animal remains without the presence of oxygen
4. decay of plant or animal remains in soil
Which is a product from the complete combustion of a fossil fuel? [9g-24]
1. carbon monoxide
2. carbon
3. hydrogen
4. water
Which is a gaseous product formed from the complete combustion of a fossil fuel? [9g-25]
1. carbon dioxide
2. carbon
3. nitrogen
4. carbon monoxide
Which is a dark solid pollution product from the incomplete combustion of a fossil fuel? [9g-26]
1. carbon dioxide
2. carbon
3. water
4. nitrogen
Which is a pollution product from the incomplete combustion of a fossil fuel? [9g-27]
1. carbon dioxide
2. water
3. carbon monoxide
4. nitrogen
Which is most likely provides evidence of global warming? [9g-28]
1. constant rainfall in Europe
2. increased fish stocks in the Atlantic Ocean
3. increased ice sheet area at the South Pole
4. thicker growth rings in trees of Northern Europe
Which is most likely provides evidence of global warming? [9g-29]
1. increased drought in parts of Africa
2. decreased fish stocks of the Atlantic Ocean
3. increased ice sheet area at the South Pole
4. thinner growth rings in trees in Northern Europe
Which is most likely provides evidence of global warming? [9g-30]
1. constant rainfall in Europe
2. a decrease in ice sheet area at the North Pole
3. an increase in fish stocks in the Pacific Ocean
4. thinner growth rings on trees in Northern Europe
Rainwater is naturally acidic due to dissolved? [9g-31]
1. oxygen
2. nitrogen
3. carbon dioxide
4. carbon monoxide
Which explains the importance of the ozone layer? [9g-32]
1. it reduces the amount of carbon dioxide in the lower atmosphere
2. it reduces the amount of carbon monoxide in the atmosphere of cities
3. it help maintains the amount of oxygen in the Earth's atmosphere
4. it reduces the amount of harmful ultraviolet radiation that reaches the Earth's surface
Which word equation corresponds to respiration? [9g-33]
1. glucose + oxygen ==> water + carbon dioxide
2. hydrocarbon + oxygen ==> water + carbon dioxide
3. water + carbon dioxide ==> glucose + oxygen
4. nitrogen + oxygen ==> nitrogen oxide
Which word equation corresponds to a fossil fuel combustion? [9g-34]
1. glucose + oxygen ==> water + carbon dioxide
2. hydrocarbon + oxygen ==> water + carbon dioxide
3. water + carbon dioxide ==> glucose + oxygen
4. carbon monoxide + nitrogen monoxide ==> carbon dioxide + nitrogen
Which word equation corresponds to photosynthesis? [9g-35]
1. glucose + oxygen ==> water + carbon dioxide
2. hydrocarbon + oxygen ==> water + carbon dioxide
3. water + carbon dioxide ==> glucose + oxygen
4. nitrogen + oxygen ==> nitrogen oxide
Which word equation corresponds to the formation of a toxic acidic gas when fossil fuels are burned? [9g-36]
1. coal + oxygen ==> water + carbon dioxide
2. hydrocarbon + oxygen ==> water + carbon dioxide
3. water + carbon dioxide ==> glucose + oxygen
4. nitrogen + oxygen ==> nitrogen dioxide
Rainwater always contains small amounts of the weakly acidic gas carbon dioxide dissolved from air. Which most likely describes what happens to the pH of rainwater when it runs over limestone rock? [9g-37]
1. the pH rises from 5.5 to 8.0
2. the pH falls from 5.5 to 3
3. the pH rises from 7 to 13
4. the pH falls from 7.5 to 7.0
Which harmful gas is reduced in car exhaust emissions by using a catalytic converter? [9g-38]
1. water
2. nitrogen oxide
3. carbon dioxide
4. nitrogen
Which harmful gas is reduced in car exhaust emissions by using a catalytic converter? [9g-39]
1. water
2. carbon dioxide
3. carbon monoxide
4. nitrogen
Which is used to treat soil which is too alkaline? [9g-40]
1. lime powder
2. marble powder
3. sand
4. peat
Which is used to treat soil which is too acid? [9g-41]
1. lime
2. marble
3. sand
4. peat
Which is believed to be the current main cause of the so-called 'Greenhouse Effect'? [9g-42]
1. increased volcanic activity
2. burning fossil fuels
3. reduction of the ozone layer
4. increase in cloud cover above the Earth
Which of the following explains the 'Greenhouse Effect'? [9g-43]
1. decrease in the ozone layer allows more heat radiation to reach the Earth's surface
2. increase in the ozone layer decreases the amount of ultraviolet radiation the reaches the Earth's surface
3. increase in carbon dioxide in the atmosphere traps more heat radiation from the Earth
4. decrease in carbon dioxide in the atmosphere allows more ultraviolet radiation to reach the Earth's surface
Which of these causes a reduction in the ozone layer? [9g-44]
1. increased burning of fossil fuels
2. increased photochemical smog in cities
3. increased sea temperature due to global warming
4. increase in the use of chemicals in refrigerators and aerosol cans
What is another term for the 'Greenhouse Effect'? [9g-45]
1. global warming
2. ozone reduction
3. atmospheric acidification
4. smog production
Which of the following is a gas emitted from factories and power stations that causes acid rain? [9g-46]
1. nitrogen
2. sulphur dioxide
3. carbon monoxide
4. hydrogen
Which of the following 'phrases' describes how most pollution is reduced in the exhaust of a motor vehicle? [9g-47]
1. 'auto ignition prevention'
2. 'high compression ratio'
3. 'catalytic converter'
4. 'electronic fuel injection'
Which of these is a power station fuel, which does not produce significant amounts of carbon dioxide that causes the 'Greenhouse Effect' or 'global warming'? [9g-20]
1. coal
2. oil
3. peat
4. uranium
Which is a harmless colourless liquid at room temperature, formed by the combustion of a fossil fuel? [9g-49]
1. water
2. carbon dioxide
3. nitrogen dioxide
4. carbon monoxide
Which is a harmless colourless gas at room temperature, formed by the combustion of a fossil fuel? [9g-50]
1. water
2. carbon dioxide
3. nitrogen dioxide
4. carbon monoxide
Which gas in the atmosphere most contributes to global warming? [9g-51]
1. carbon monoxide
2. nitrogen
3. carbon dioxide
4. hydrogen
Which most likely provides evidence of global warming? [9g-52]
1. thinner growth rings on trees in Northern Europe
2. steady rainfall patterns in Europe
3. an increase in the ice sheets of Greenland
4. butterflies breeding in more northerly latitudes than before
Hydrocarbons like candle wax (or oil fuels) burn to form carbon dioxide and water. Which is a correct description of a chemical test for carbon dioxide? [9h-1]
1. white milky precipitate with limewater
2. turns white copper sulphate powder blue
3. turns blue cobalt chloride paper pink
4. boils at 100^oC
Hydrocarbons like candle wax (or oil fuels) burn to form carbon dioxide and water. Which is a correct description of a chemical test for water? [9h-2]
1. white milky precipitate with limewater
2. turns white copper sulphate powder blue
3. turns universal indicator green
4. boils at 100^oC
Hydrocarbons like candle wax (or oil fuels) burn to form carbon dioxide and water. Which is a correct description of a chemical test for water? [9h-3]
1. white milky precipitate with limewater
2. turns universal indicator green
3. turns blue cobalt chloride paper pink
4. boils at 100^oC
Hydrocarbons like candle wax (or oil fuels) burn to form carbon dioxide and water. Which is a correct description of a physical test for water? [9h-4]
1. white milky precipitate with limewater
2. turns white copper sulphate powder blue
3. turns blue cobalt chloride paper pink
4. boils at 100^oC
A simple battery cell design involves two different metal strips connected by an electrolyte and external wires. Which two metals will produce the largest voltage? [9h-5]
1. magnesium and silver
2. zinc and iron
3. magnesium and zinc
4. zinc and tin
A simple battery cell design involves two different metal strips connected by an electrolyte and external wires. Which two metals will produce the smallest voltage? [9h-6]
1. magnesium and silver
2. zinc and iron
3. magnesium and zinc
4. zinc and tin
A simple battery cell design involves two different metal strips connected by an electrolyte and external wires. Which two metals will produce the biggest voltage? [9h-7]
1. zinc and copper
2. zinc and tin
3. magnesium and copper
4. tin and lead
A simple battery cell design involves two different metal strips connected by an electrolyte and external wires. Which two metals will produce the smallest voltage? [9h-8]
1. zinc and copper
2. zinc and tin
3. magnesium and copper
4. tin and lead
A suitable material for a match head is a mixture of phosphorus sulfide (formula P₄S₃) and potassium chlorate (formula KClO₃). Which best explains how the match ignites on striking it? [9h-9]
1. friction generates heat to trigger the reaction
2. friction allows air to get to the phosphorus sulfide
3. friction breaks down the potassium chlorate into smaller reactive particles
4. phosphorus sulfide initially burns from the oxygen in air
A suitable material for a match head is a mixture of phosphorus sulfide (formula P₄S₃) and potassium chlorate (formula KClO₃). Which best explains the role of the phosphorus sulfide? [9h-10]
1. acts as a catalyst to help burn the sulfur
2. phosphorus sulfide burns with oxygen generated from the potassium chlorate to generate heat energy
3. produces oxygen to cause the mixture to burn and release heat energy
4. absorbs poisonous gases formed in the combustion reaction
A suitable material for a match head is a mixture of phosphorus sulfide (formula P₄S₃) and potassium chlorate (formula KClO₃). Which best explains the role of the potassium chlorate? [9h-11]
1. acts a catalyst to trigger the reaction
2. burns exothermically with oxygen from the air to release heat energy
3. produces oxygen to burn the sulfur
4. absorbs poisonous gases formed in the combustion reaction
A suitable material for a match head is a mixture of phosphorus sulfide (formula P₄S₃) and potassium chlorate (formula KClO₃). Which best explains why heat energy is released immediately after striking the match? [9h-12]
1. the phosphorus acts as a catalyst
2. potassium chlorate is a source of heat
3. the surrounding air heats up the gases to trigger a chemical reaction
4. phosphorus sulfide forms two oxides
Carbon dioxide is formed in the complete combustion of a fuel. Carbon monoxide can be formed in the incomplete combustion of a fuel. Which statement is TRUE about these two gases? [9h-13]
1. carbon monoxide will burn and carbon dioxide will not
2. both gases give a milky precipitate when bubbled into limewater
3. both gases are toxic to animals
4. carbon monoxide is an element and carbon dioxide is a compound
Carbon dioxide is formed in the complete combustion of a fuel. Carbon monoxide can be formed in the incomplete combustion of a fuel. Which statement is TRUE about these two gases? [9h-14]
1. neither compound will burn in air
2. only carbon dioxide gives a milky precipitate when bubbled into limewater
3. both gases are toxic to animals
4. carbon monoxide is an element and carbon dioxide is a compound
Carbon dioxide is formed in the complete combustion of a fuel. Carbon monoxide can be formed in the incomplete combustion of a fuel. Which statement is TRUE about these two gases? [9h-15]
1. neither compound will burn in air
2. both gases give a milky precipitate when bubbled into limewater
3. only carbon monoxide gas is toxic to animals
4. carbon monoxide is an element and carbon dioxide is a compound
Carbon dioxide is formed in the complete combustion of a fuel. Carbon monoxide can be formed in the incomplete combustion of a fuel. Which statement is TRUE about these two gases? [9h-16]
1. neither compound will burn in air
2. both gases give a milky precipitate when bubbled into limewater
3. both gases are toxic to animals
4. both gases are compounds
Hydrogen could well be a fuel for the future but there are advantages and disadvantages to its use. Which statement is TRUE about the potential use of hydrogen as a fuel? [9h-17]
1. on burning it produces no pollution effects
2. on burning it gives off a lot of wasted light energy
3. it is not as flammable or explosive as oil
4. it is easily delivered to homes in liquid form
Hydrogen could well be a fuel for the future but there are advantages and disadvantages to its use. Which statement is TRUE about the potential use of hydrogen as a fuel? [9h-18]
1. on burning it produces lots of greenhouse gases
2. on burning it gives off little wasted light energy
3. it is not as flammable or explosive as oil
4. it is easily delivered to homes in liquid form
Hydrogen could well be a fuel for the future but there are advantages and disadvantages to its use. Which statement is TRUE about the potential use of hydrogen as a fuel? [9h-19]
1. on burning it produces lots of greenhouse gases
2. on burning it gives off lots of wasted light energy
3. it is explosive when mixed with air
4. it is easily delivered to homes in liquid form
Hydrogen could well be a fuel for the future but there are advantages and disadvantages to its use. Which statement is TRUE about the potential use of hydrogen as a fuel? [9h-20]
1. on burning it produces lots of greenhouse gases
2. on burning it gives off lots of wasted light energy
3. it is not as flammable or explosive as oil
4. it has to be compressed before it can be distributed efficiently
Which word would you associate with the phrase 'a substance that releases energy on burning'? [9h-21]
1. fuel
2. exothermic
3. reactive
4. endothermic
Which word would you associate with the phrase 'reaction that gives out heat'? [9h-22]
1. fuel
2. exothermic
3. reactive
4. endothermic
Which word would you associate with the phrase 'easily changes chemically'? [9h-23]
1. fuel
2. exothermic
3. reactive
4. endothermic
Which word would you associate with the phrase 'reaction that absorbs heat'? [9h-24]
1. fuel
2. exothermic
3. reactive
4. endothermic
Which is formed in the complete combustion of a hydrocarbon fuel? [9h-25]
1. H₂O
2. C₈H₁₈
3. CO
4. O₂
Which substance is found in petrol? [9h-26]
1. C
2. C₈H₁₈
3. CO
4. H₂
Which substance is most likely to form in the incomplete (inefficient) burning of a fuel? [9h-27]
1. H₂O
2. C₈H₁₈
3. CO
4. CO₂
Which substance is needed to burn any fuel? [9h-28]
1. H₂O
2. C₈H₁₈
3. CO
4. O₂
Which substance could be a fuel of the future? [9h-29]
1. H₂
2. C₈H₁₈
3. CO
4. C
Which substance is a product of the complete combustion of a fuel? [9h-30]
1. C
2. CO₂
3. CO
4. O₂
Which substance is a colourless flammable liquid? [9h-31]
1. H₂O
2. C
3. C₈H₁₈
4. CO₂
Which substance is a hydrocarbon? [9h-32]
1. H₂
2. CO
3. C
4. C₈H₁₈
Recycling valuable, and sometimes rare, metals, is important. Which of these reactions uses a cheap metal to recover, by displacement and precipitation, a much more valuable metal from a salt solutions [9g-85]
1. iron + copper sulfate ==> iron sulfate + copper
2. tin + lead nitrate ==> tin nitrate + lead
3. copper + aluminium sulfate ==> copper sulfate + aluminium
4. aluminium + iron nitrate ==> aluminium nitrate + iron
Recycling valuable, and sometimes rare, metals, is important. Which of these reactions uses a cheap metal to recover, by displacement and precipitation, a much more valuable metal from a salt solutions [9g-86]
1. magnesium + copper sulfate ==> magnesium sulfate + copper
2. iron + silver sulfate ==> iron sulfate + silver
3. aluminium + copper sulfate ==> aluminium sulfate + copper
4. aluminium + iron nitrate ==> aluminium nitrate + iron
Recycling valuable, and sometimes rare, metals, is important. Which of these reactions uses a cheap metal to recover, by displacement and precipitation, a much more valuable metal from a salt solutions [9g-87]
1. copper + magnesium sulfate ==> copper sulfate + magnesium
2. zinc + tin nitrate ==> zinc nitrate + lead
3. iron + gold nitrate ==> iron nitrate + gold
4. iron + tin sulfate ==> iron sulfate + tin
Recycling valuable, and sometimes rare, metals, is important. Which of these reactions uses a cheap metal to recover, by displacement and precipitation, a much more valuable metal from a salt solutions [9g-88]
1. magnesium + zinc sulfate ==> magnesium sulfate + zinc
2. zinc + lead nitrate ==> zinc nitrate + lead
3. calcium + zinc nitrate ==> calcium nitrate + zinc
4. iron + platinum sulfate ==> iron sulfate + platinum
Which is a useful 'combustion reaction'? [9g-89]
1. sodium hydroxide + hydrochloric acid ==> sodium chloride + water
2. butane + oxygen ==> carbon dioxide + water
3. zinc + copper sulphate ==> zinc sulphate + copper
4. calcium carbonate ==> calcium oxide + carbon dioxide
Which of these chemical changes corresponds to a 'fuel combustion' reaction? [9h-38]
1. sodium hydroxide + hydrochloric acid ==> sodium chloride + water
2. methane + oxygen ==> carbon dioxide + water
3. zinc + copper sulfate ==> zinc sulfate + copper
4. calcium carbonate ==> calcium oxide + carbon dioxide
Which of these chemical changes corresponds to a 'displacement reaction'? [9h-39]
1. sodium hydroxide + hydrochloric acid ==> sodium chloride + water
2. methane + oxygen ==> carbon dioxide + water
3. zinc + copper sulfate ==> zinc sulfate + copper
4. calcium carbonate ==> calcium oxide + carbon dioxide
Which of these chemical changes corresponds to a 'decomposition reaction'? [9h-40]
1. sodium hydroxide + hydrochloric acid ==> sodium chloride + water
2. methane + oxygen ==> carbon dioxide + water
3. zinc + copper sulfate ==> zinc sulfate + copper
4. calcium carbonate ==> calcium oxide + carbon dioxide
Experiments were done to decide which chemicals would be best to use for an emergency food cooking heater. The chemicals on mixing need to react exothermically to release heat. Chemicals can be tested in a simple calorimeter to measure the temperature rise. From the results for mixtures A to D, which would be the most efficient to use in such a device? [9h-41]
1. 10g mix, temperature rose from 23^o to 43^oC
2. 20g mix, temperature rose from 25^o to 35^oC
3. 30g mix, temperature rose from 30^o to 75^oC
4. 40g mix, temperature rose from 28^o to 68^oC
Experiments were done to decide which chemicals would be best to use for an emergency food cooking heater. The chemicals on mixing need to react exothermically to release heat. Chemicals can be tested in a simple calorimeter to measure the temperature rise. From the results for mixtures A to D, which would be the least efficient to use in such a device? [9h-42]
1. 10g mix, temperature rose from 23^o to 43^oC
2. 20g mix, temperature rose from 25^o to 35^oC
3. 30g mix, temperature rose from 30^o to 75^oC
4. 40g mix, temperature rose from 28^o to 68^oC
Experiments were done to decide which chemicals would be best to use for an emergency food cooking heater. The chemicals on mixing need to react exothermically to release heat. Chemicals can be tested in a simple calorimeter to measure the temperature rise. From the results for mixtures A to D, which would be the 2nd most efficient to use in such a device? [9h-43]
1. 10g mix, temperature rose from 23^o to 43^oC
2. 20g mix, temperature rose from 25^o to 35^oC
3. 30g mix, temperature rose from 30^o to 75^oC
4. 40g mix, temperature rose from 28^o to 68^oC
Experiments were done to decide which chemicals would be best to use for an emergency food cooking heater. The chemicals on mixing need to react exothermically to release heat. Chemicals can be tested in a simple calorimeter to measure the temperature rise. From the results for mixtures A to D, which would be the 3rd most efficient to use in such a device? [9h-44]
1. 10g mix, temperature rose from 23^o to 43^oC
2. 20g mix, temperature rose from 25^o to 35^oC
3. 30g mix, temperature rose from 30^o to 75^oC
4. 40g mix, temperature rose from 28^o to 68^oC
In a measured (quantitative) experiment, burning 2.4g of magnesium produced 4.0g of white magnesium oxide powder (MgO). What mass of oxygen combined with the magnesium? [9h-45]
1. 1.6g
2. 2.4g
3. 3.2g
4. 6.4g
In a measured (quantitative) experiment, burning 2.4g of magnesium produced 4.0g of white magnesium oxide powder (MgO). What mass of magnesium oxide might you expect if 3.6g of magnesium was burned? [9h-46]
1. 2.4g
2. 6.0g
3. 7.2g
4. 6.4g
Calcium carbonate decomposes on strong heating to form solid calcium oxide and carbon dioxide gas.
CaCO₃ ==> CaO + CO₂
If 100g of calcium carbonate is decomposed to give a residue of 56g of calcium oxide, what is the mass of the carbon dioxide formed? [9h-47]
1. 0g
2. 56g
3. 44g
4. 54g
If 30g of salt is dissolved in 100g of water, what mass of salt solution is formed? [9h-48]
1. 70g
2. 100g
3. 30g
4. 130g
Hydrogen could well be a fuel for the future but there are advantages and disadvantages to its use. Which statement is TRUE about the potential use of hydrogen as a fuel? [9h-49]
1. on burning it produces only water
2. on burning it gives off a lot of wasted light energy
3. it is not as flammable or explosive as oil
4. it is easily delivered to homes in liquid form
Hydrogen could well be a fuel for the future but there are advantages and disadvantages to its use. Which statement is TRUE about the potential use of hydrogen as a fuel? [9h-50]
1. on burning it gives off a lot of wasted light energy
2. it is a dangerously explosive gas
3. it is not as flammable or explosive as oil
4. it is easily delivered to homes in liquid form
When a metal is heated or burned in air, the product weighs more than the metal. What is the reason for this observation? [9h-51]
1. the metal absorbs oxygen from the air
2. the metal absorbs water vapour from the air
3. the metal combines with oxygen in the air
4. the metal combines with nitrogen in the air
Propane gas (C₃H₈) can be used in gas cookers and burns in just the same way methane completely burns in a bunsen flame. Which is the correct right hand side of the equation to balance the left hand side given below? [9h-52]
C₃H₈ + 5O₂ ==> ? + ?
1. 3CO + 4H₂O
2. 3CO₂ + 2H₂O
3. 4CO₂ + 8HO
4. 3CO₂ + 4H₂O
Which part of the chemical industry manufactures drugs and medicines? [9h-53]
1. pharmaceutical
2. dyestuffs
3. plastics
4. petrochemical
Which part of the chemical industry manufactures colours for clothes? [9h-54]
1. pharmaceutical
2. dyestuffs
3. plastics
4. petrochemical
Which part of the chemical industry manufactures PVC for windows? [9h-55]
1. pharmaceutical
2. dyestuffs
3. plastics
4. petrochemical
Which part of the chemical industry manufactures hydrocarbon fuels? [9h-56]
1. pharmaceutical
2. dyestuffs
3. plastics
4. petrochemical
Which is TRUE about burning fossil fuels? [7f-53]
1. most fuels contain a high percentage of carbon
2. the fuel reacts with nitrogen
3. little thermal heat energy is released
4. clean fuels burn with a yellow flame
Which is TRUE about burning fossil fuels? [7f-54]
1. most fuels contain a low percentage of carbon
2. the fuel reacts with oxygen
3. little thermal heat energy is released
4. clean fuels burn with a yellow flame
Which is TRUE about burning fossil fuels? [7f-55]
1. most fossil fuels contain a low percentage of carbon
2. the fuel reacts with nitrogen
3. much thermal heat energy is released
4. clean fuels burn with a yellow flame
Which is TRUE about burning fossil fuels? [7f-56]
1. most fuels contain a low percentage of carbon
2. the fuel reacts with nitrogen
3. little thermal heat energy is released
4. clean fuels burn with a pale blue flame
To which group of materials does a china plate belong too? [9g-113]
1. ceramics
2. polymers
3. composites
To which group of materials does a fire brick belong? [9g-114]
1. ceramics
2. polymers
3. composites
To which group of materials does a insulation rings for high voltage overhead electrical power lines belong? [9g-115]
1. ceramics
2. polymers
3. composites
To which group of materials does PVC belong? [9g-116]
1. ceramics
2. polymers
3. composites
To which group of materials does plastic carrier bag belong? [9g-117]
1. ceramics
2. polymers
3. composites
From which group of materials do you make cheap toys? [9g-118]
1. ceramics
2. polymers
3. composites
From which group of materials are you likely to make surfboards? [9g-119]
1. ceramics
2. polymers
3. composites
From which group of materials are you likely to make boat hulls? [9g-120]
1. ceramics
2. polymers
3. composites
From which group of materials are you likely to make skate boards? [9g-120]
1. ceramics
2. polymers
3. composites
[9g-122] Which of the following statements is NOT completely true about recycling?
1. overall more energy is needed to produce the final product increasing the extra processing costs
2. finite mineral resources will last much longer whether be rocks or oil
3. unwanted waste products can be made into useful products and reducing waste to cause pollution
4. it can help reduce greenhouse gas levels in the atmosphere, hence reduce global warming and erratic climate changes
[9g-123] Which of the following statements is NOT completely true about recycling?
1. overall less energy is needed to produce the final product, reducing costs, more economic
2. extra recycling costs are unnecessary because mineral resources are unlikely to run out in the future
3. unwanted waste products can be made into useful products and reducing waste to cause pollution
4. it can help reduce greenhouse gas levels in the atmosphere, hence reduce global warming and erratic climate changes
[9g-124] Which of the following statements is NOT completely true about recycling?
1. overall less energy is needed to produce the final product, reducing costs, more economic
2. finite mineral resources will last much longer whether be rocks or oil
3. it is difficult and uneconomic to convert unwanted waste products into useful products despite a risk of increased pollution
4. it can help reduce greenhouse gas levels in the atmosphere, hence reduce global warming and erratic climate changes
[9g-125] Which of the following statements is NOT completely true about recycling?
1. overall less energy is needed to produce the final product, reducing costs, more economic
2. finite mineral resources will last much longer whether be rocks or oil
3. unwanted waste products can be made into useful products and reducing waste to cause pollution
4. overall recycling increases greenhouse gas levels in the atmosphere, with minimum effect on global warming and erratic climate changes
[9g-126] Which of the following statements is NOT completely true about recycling aluminium?
1. more energy is needed to produce the final product, reducing increasing costs, less economic compared to extracting aluminum from its ore
2. the finite mineral resource of bauxite ore (aluminium oxide) will last longer
3. unwanted waste products must be dealt with after the initial extraction of aluminium from bauxite ore
4. recycling aluminium can help reduce greenhouse gas levels in the atmosphere, hence reduce global warming and erratic climate changes
[9g-127] Which of the following statements is NOT completely true about recycling aluminium?
1. overall less energy is needed to produce the final product, reducing costs, more economic since the initial extraction of aluminium from bauxite ore uses costly electricity
2. there is no real limit to the bauxite ore from which we extract aluminium by electrolysis
3. unwanted waste products must be dealt with after the initial extraction of aluminium from bauxite ore
4. recycling aluminium can help reduce greenhouse gas levels in the atmosphere, hence reduce global warming and erratic climate changes
[9g-128] Which of the following statements is NOT completely true about recycling aluminium?
1. overall less energy is needed to produce the final product, reducing costs, more economic since the initial extraction of aluminium from bauxite ore uses costly electricity
2. the finite mineral resource of bauxite ore (aluminium oxide) will last longer
3. there are lots more of unwanted waste products when you recycle aluminium
4. recycling aluminium can help reduce greenhouse gas levels in the atmosphere, hence reduce global warming and erratic climate changes
[9g-129] Which of the following statements is NOT completely true about recycling aluminium?
1. overall less energy is needed to produce the final product, reducing costs, more economic since the initial extraction of aluminium from bauxite ore uses costly electricity
2. the finite mineral resource of bauxite ore (aluminium oxide) will last longer
3. unwanted waste products must be dealt with after the initial extraction of aluminium from bauxite ore
4. recycling aluminium doesn't help reduce greenhouse gas levels in the atmosphere, so doesn't reduce global warming and erratic climate changes
[9g-130] Which of the following is NOT a greenhouse gas?
1. Nitrogen gas, N₂
2. Methane gas, CH₄
3. Water vapour, H₂O
4. Carbon dioxide gas, CO₂
[9g-131] Which of the following is a greenhouse gas emitted from leaking oil or gas wells?
1. Nitrogen gas, N₂
2. Methane gas, CH₄
3. Water vapour, H₂O
4. Carbon dioxide gas, CO₂
[9g-132] Which of the following is a greenhouse gas whose concentration in the atmosphere most depends on the local weather conditions?
1. Nitrogen gas, N₂
2. Methane gas, CH₄
3. Water vapour, H₂O
4. Carbon dioxide gas, CO₂
[9g-133] Which of the following is NOT a greenhouse gas?
1. Carbon dioxide gas, CO₂
2. Methane gas, CH₄
3. Water vapour, H₂O
4. Oxygen gas, O₂
[9g-134] Which of the following is NOT a greenhouse gas?
1. Carbon dioxide gas, CO₂
2. Methane gas, CH₄
3. Water vapour, H₂O
4. Argon gas, Ar
[9g-135] Which of the following is a greenhouse gas of very low concentration, but is steadily rising from excessive fossil combustion?
1. Carbon dioxide gas, CO₂
2. Methane gas, CH₄
3. Water vapour, H₂O
4. Argon gas, Ar
[9g-136] Which of the following removes carbon dioxide from the atmosphere?
1. plankton
2. molluscs
3. worms
4. crabs
[9g-137] Which of the following 'anti-pollution' reactions is catalysed in the catalytic converter of a car exhaust?
1. carbon monoxide + oxygen ==> carbon dioxide
2. hydrogen + oxygen ==> water
3. nitrogen + oxygen ==> nitrogen oxide
4. carbon + oxygen ==> carbon monoxide
[9g-138] With more energy absorbed from the sun leading to global warming and weather patterns and climate changes, which of the following can we control to minimise these effects?
1. extra glacier and ice sheet melting
2. more erratic weather patterns - more droughts
3. more erratic weather patterns - more powerful storms, stronger winds and heavier rainfall causing damage to properties and floods
4. deforestation of large areas of natural forest
[9g-139] Which of the following describes the manufacture of ceramics?
1. made by heating a mixture of non-metallic materials to a high temperature
2. made by joining lots of small monomer molecules together to form long chain molecules with the same repeating unit
3. made by fabricating at least two different materials together, one often reinforcing the other
4. made by melting a mixture of a metal with other materials which may be another metal or non-metal
[9g-140] Which of the following describes the manufacture of polymers?
1. made by heating a mixture of non-metallic materials to a high temperature
2. made by joining lots of small monomer molecules together to form long chain molecules with the same repeating unit
3. made by fabricating at least two different materials together, one often reinforcing the other
4. made by melting a mixture of a metal with other materials which may be another metal or non-metal
[9g-141] Which of the following describes the manufacture of composites?
1. made by heating a mixture of non-metallic materials to a high temperature
2. made by joining lots of small monomer molecules together to form long chain molecules with the same repeating unit
3. made by fabricating at least two different materials together, one often reinforcing the other
4. made by melting a mixture of a metal with other materials which may be another metal or non-metal
[9g-142] Which of the following describes the manufacture of alloys?
1. made by heating a mixture of non-metallic materials to a high temperature
2. made by joining lots of small monomer molecules together to form long chain molecules with the same repeating unit
3. made by fabricating at least two different materials together, one often reinforcing the other
4. made by melting a mixture of a metal with other materials which may be another metal or non-metal
[9g-143] Which of the following describes some of the properties of ceramics?
1. very heat resistant, melt at a high temperature, poor heat energy and electrical conductors, act as insulators
2. a wide range of properties, often soften easily when heated, poor conductors of heat energy and electricity, readily shaped into a variety of cheap products
3. a strong mixture of materials of a wide variety of composition, usually poor heat energy and electrical conductors, can be made into strong light materials
4. can be very strong, good conductors of heat energy and electricity, often high melting, can be cast into a wide range of useful shapes
[9g-144] Which of the following describes some of the properties of polymers?
1. very heat resistant, melt at a high temperature, poor heat energy and electrical conductors, act as insulators
2. a wide range of properties, often soften easily when heated, poor conductors of heat energy and electricity, readily shaped into a variety of cheap products
3. a strong mixture of materials of a wide variety of composition, usually poor heat energy and electrical conductors, can be made into strong light materials
4. can be very strong, good conductors of heat energy and electricity, often high melting, can be cast into a wide range of useful shapes
[9g-145] Which of the following describes some of the properties of composites?
1. very heat resistant, melt at a high temperature, poor heat energy and electrical conductors, act as insulators
2. a wide range of properties, often soften easily when heated, poor conductors of heat energy and electricity, readily shaped into a variety of cheap products
3. a strong mixture of materials of a wide variety of composition, usually poor heat energy and electrical conductors, can be made into strong light materials
4. can be very strong, good conductors of heat energy and electricity, often high melting, can be cast into a wide range of useful shapes
[9g-146] Which of the following describes some of the properties of alloys?
1. very heat resistant, melt at a high temperature, poor heat energy and electrical conductors, act as insulators
2. a wide range of properties, often soften easily when heated, poor conductors of heat energy and electricity, readily shaped into a variety of cheap products
3. a strong mixture of materials of a wide variety of composition, usually poor heat energy and electrical conductors, can be made into strong light materials
4. can be very strong, good conductors of heat energy and electricity, often high melting, can be cast into a wide range of useful shapes
[9g-147] Below are listed the percent composition by mass of selected elements in the Earth's crust (the other 12% of other elements are not shown). Which corresponds to oxygen which combines with other elements in the Earth's crust?
1. 46%
2. 28%
3. 8%
4. 6%
[9g-147] Below are listed the percent composition by mass of selected elements in the Earth's crust (the other 12% of other elements are not shown). Which corresponds to silicon which combines with many other elements in the minerals of the Earth's crust?
1. 46%
2. 28%
3. 8%
4. 6%
[9g-149] Below are listed the percent composition by mass of selected elements in the Earth's crust (the other 12% of other elements are not shown). Which corresponds to aluminum a metal used to make strong light alloys?
1. 46%
2. 28%
3. 8%
4. 6%
[9g-150] Below are listed the percent composition by mass of selected elements in the Earth's crust (the other 12% of other elements are not shown). Which corresponds to iron extracted in the blast furnace to make steel?
1. 46%
2. 28%
3. 8%
4. 6%
[9g-151] Which of the following contributes the most directly to global warming and climate change?
1. an operating nuclear power station
2. using geothermal energy power plants
3. using wood for house construction
4. diesel fuelled cars
[9g-152] Which of the following contributes the most directly to global warming and climate change?
1. an operating nuclear power station
2. using geothermal energy power plants
3. using wood for house construction
4. diesel fuelled ships
[9g-153] Which of the following contributes the most directly to global warming and climate change?
1. an operating nuclear power station
2. using geothermal energy power plants
3. using wood for house construction
4. large scale production of lime (calcium oxide) from limestone (calcium carbonate)
[9g-154] Which of the following contributes the least directly to global warming and climate change?
1. diesel fuelled ships
2. petrol fuelled cars
3. using geothermal energy power plants
4. large scale production of lime (calcium oxide) from limestone (calcium carbonate)
[9g-155] Which of the following contributes the least directly to global warming and climate change?
1. diesel fuelled ships
2. petrol fuelled cars
3. an operating nuclear power station
4. large scale production of lime (calcium oxide) from limestone (calcium carbonate)
[9g-156] Which of the following contributes the least directly to global warming and climate change?
1. diesel fuelled ships
2. petrol fuelled cars
3. operating a hydroelectric power plant
4. large scale production of lime (calcium oxide) from limestone (calcium carbonate)

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