OCR GCSE 9-1 Gateway Science/Chemistry QUIZ on Topic 2 "Elements, Compounds and Mixtures" (HT)

Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-1]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
has a fixed melting point? true or false? true or false? true or false?
1. true, true, false
2. true, false, false
3. false, false, true
4. false, true, true
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-2]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
has only one type of atom? true or false? true or false? true or false?
1. true, true, false
2. true, false, false
3. false, false, true
4. false, true, true
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-3]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
always has the same composition? true or false? true or false? true or false?
1. false, true, true
2. true, false, false
3. true, true, false
4. false, false, true
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-4]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
has a definite chemical symbol or formula? true or false? true or false? true or false?
1. false, false, true
2. true, false, true
3. false, true, false
4. true, true, false
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-5]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
has no fixed boiling point? true or false? true or false? true or false?
1. false, false, true
2. true, false, true
3. false, true, false
4. true, true, false
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-6]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
is easily separated into different substances? true or false? true or false? true or false?
1. false, true, true
2. false, false, true
3. true, true, false
4. true, false, false
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-7]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
has more than one type of atom? true or false? true or false? true or false?
1. true, true, false
2. false, false, true
3. false, true, true
4. true, false, false
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-8]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
there are only about 100 of them? true or false? true or false? true or false?
1. true, true, false
2. false, false, true
3. false, true, true
4. true, false, false
/What is the formula of the molecule? [8f-9]
1. C₂H₆O
2. ₂C₆HO
3. C₃H₆
4. C₆H₂O
What is the formula of the molecule? [8f-10]
1. C₅H₆I₂
2. C₃H₆Cl₂
3. C₆H₃Cl₂
4. C₂H₆Cl₃
What is the formula of the molecule? [8f-11]
1. C₈H₃
2. ₃C₈H
3. C₃H₈
4. C₃H₆
What is the formula of the molecule? [8f-12]
1. C₂H₆O₃
2. ₃C₆H₂O
3. C₅H₆O
4. C₃H₆O₂
When some salt is dissolved in plenty of water, which statement is most likely TRUE about the resulting solution? [8f-13]
1. the boiling point is higher than pure water
2. the freezing point is higher than pure water
3. the boiling point decreases the longer the solution is boiled
4. the solution becomes less concentrated the longer it is boiled
When some salt is dissolved in plenty of water, which statement is most likely TRUE about the resulting solution? [8f-14]
1. the boiling point is lower than pure water
2. the freezing point is lower than pure water
3. the boiling point decreases the longer the solution is boiled
4. the solution becomes less concentrated the longer it is boiled
When some salt is dissolved in plenty of water, which statement is most likely TRUE about the resulting solution? [8f-15]
1. the boiling point is lower than pure water
2. the freezing point is higher than pure water
3. the boiling point increases the longer the solution is boiled
4. the solution becomes less concentrated the longer it is boiled
When some salt is dissolved in plenty of water, which statement is most likely TRUE about the resulting solution? [8f-16]
1. the boiling point is lower than pure water
2. the freezing point is higher than pure water
3. the boiling point decreases the longer the solution is boiled
4. the solution becomes more concentrated the longer it is boiled
Which order of the three words matches the three substances iron, iron oxide, steel ?, ?, ? [8f-17]
1. element, compound, mixture
2. compound, element, mixture
3. mixture, compound, element
4. element, mixture, compound
Which order of the three words matches the three substances salt, sodium, seawater ?, ?, ? [8f-18]
1. element, compound, mixture
2. compound, element, mixture
3. mixture, compound, element
4. element, mixture, compound
Which order of the three words matches the three substances brass, copper oxide, zinc ?, ?, ? [8f-19]
1. element, compound, mixture
2. compound, element, mixture
3. mixture, compound, element
4. element, mixture, compound
Which order of the three words matches the three substances hydrogen, petrol, water ?, ?, ? [8f-20]
1. element, compound, mixture
2. compound, element, mixture
3. mixture, compound, element
4. element, mixture, compound
Which order of the three words matches the three substances carbon dioxide, coal, carbon ?, ?, ? [8f-21]
1. compound, mixture, element
2. mixture, compound, element
3. element, mixture, compound
4. compound, element, mixture
Which order of the three words matches the three substances plaster of Paris, gypsum, flowers of sulfur ?, ?, ? [8f-22]
1. compound, mixture, element
2. mixture, compound, element
3. element, mixture, compound
4. compound, element, mixture
Which order of the three words matches the three substances chlorine, rock salt, sodium chloride ?, ?, ? [8f-23]
1. compound, mixture, element
2. mixture, compound, element
3. element, mixture, compound
4. compound, element, mixture
Which order of the three words matches the three substances sodium hydroxide, oxygen, bleach ?, ?, ? [8f-24]
1. compound, mixture, element
2. mixture, compound, element
3. element, mixture, compound
4. compound, element, mixture
Which two words apply to the substance nitrogen? [8f-25]
1. gas, element
2. liquid, compound
3. solid, mixture
4. gas, compound
Which two words apply to the substance copper sulfate? [8f-26]
1. gas, element
2. solid, compound
3. solid, mixture
4. gas, compound
Which two words apply to the substance wood? [8f-27]
1. gas, element
2. solid, compound
3. solid, mixture
4. gas, compound
Which two words apply to the substance sulfur dioxide? [8f-28]
1. gas, element
2. solid, compound
3. solid, mixture
4. gas, compound
Which two words apply to the substance vinegar? [8f-29]
1. liquid, mixture
2. solid, element
3. gas, mixture
4. liquid, element
Which two words apply to the substance magnesium? [8f-30]
1. liquid, mixture
2. solid, element
3. gas, mixture
4. liquid, element
Which two words apply to the substance air? [8f-31]
1. liquid, mixture
2. solid, element
3. gas, mixture
4. liquid, element
Which two words apply to the substance mercury? [8f-32]
1. liquid, mixture
2. solid, element
3. gas, mixture
4. liquid, element
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-33]
1. at the start they are a mixture
2. at the end they are a mixture
3. at the start they cannot be separated with a magnet
4. at the end they can be separated with a magnet
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-34]
1. at the start they are a compound
2. at the end they are a compound
3. at the start they cannot be separated with a magnet
4. at the end they can be separated with a magnet
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-35]
1. at the start they are a compound
2. at the end they are a mixture
3. at the start they can be separated with a magnet
4. at the end they can be separated with a magnet
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-36]
1. at the start they are a compound
2. at the end they are a mixture
3. at the start they cannot be separated with a magnet
4. at the end they cannot be separated with a magnet
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-37]
1. the colour change suggests a chemical reaction has happened overall
2. FeS describes them at the start, Fe + S describes them at the end
3. at the start, acid will act on the iron forming hydrogen and the same gas is formed with acid and the dark-grey solid product
4. the red glow without heating shows overall a physical change has happened to the mixture when cool
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-38]
1. the colour change suggests a physical change has happened overall
2. Fe + S describes them at the start, FeS describes them at the end
3. at the start, acid will act on the iron forming hydrogen and the same gas is formed with acid and the dark-grey solid product
4. the red glow without heating shows overall a physical change has happened to the mixture when cool
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-39]
1. the colour change suggests a physical change has happened overall
2. FeS describes them at the start, Fe + S describes them at the end
3. at the start, acid will act on the iron forming hydrogen and hydrogen sulfide gas is formed with acid and the dark-grey solid product
4. the red glow without heating shows overall a physical change has happened to the mixture when cool
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-40]
1. the colour change suggests a physical change has happened overall
2. FeS describes them at the start, Fe + S describes them at the end
3. at the start, acid will act on the iron forming hydrogen and the same gas is formed with acid and the dark-grey solid product
4. the red glow without heating suggests overall a chemical change has happened to the mixture when cool
Which method of separation is best to use for separating petrol from crude oil? [8f-41]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which method of separation is best to use for obtaining salt from seawater? [8f-42]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which method of separation is best to use for removing silt from muddy water? [8f-43]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which method of separation is best to use for investigating the composition of food dyes in sweet colours? [8f-44]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which method of separation is best to use for purifying water containing small quantities of dissolved minerals? [8f-45]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which method of separation is best to use for obtaining fertiliser crystals from neutralising nitric acid solution with the alkali ammonia? [8f-46]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which method of separation is best to use for separating a solid product* formed from mixing two solutions? (* called a precipitate) [8f-47]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which method of separation is best to use for checking which ink was used in a forged cheque? [8f-48]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which particle is a compound made up of three elements? [8f-49]
1. 8
2. 2
3. 4
4. 7
Which particle is a compound made up of three elements? [8f-50]
1. 2
2. 9
3. 4
4. 7
Which particle is an element made up of single atoms? [8f-51]
1. 1
2. 6
3. 3
4. 5
Which particle is a compound made up of two elements? [8f-52]
1. 3
2. 5
3. 6
4. 1
Which particle is a compound made up of two elements? [8f-53]
1. 7
2. 8
3. 6
4. 3
Which particle is a molecule made of 4 atoms? [8f-54]
1. 7
2. 6
3. 8
4. 2
Which particle is formed when two different colourless gases chemically combine? [8f-55]
1. 7
2. 6
3. 4
4. 2
Which particle is formed when a black solid and a colourless gas chemically combine? [8f-56]
1. 9
2. 6
3. 4
4. 2
Given the following relative atomic masses: Cu = 64, S = 32 and O = 16; calculate the relative formula mass of copper sulfate, CuSO₄ [rfm-1]
1. 160
2. 112
3. 96
4. 336
Given the following relative atomic masses: H = 1 and C = 12; calculate the relative molecular mass of ethane, C₂H₆ [rfm-2]
1. 13
2. 30
3. 18
4. 25
Given the following relative atomic masses: H = 1 and C = 12; calculate the relative molecular mass of octane, C₈H₁₈ [rfm-3]
1. 13
2. 96
3. 114
4. 112
Given the following relative atomic masses: H = 1, N = 14 and O = 16; calculate the relative formula mass of nitric acid, HNO₃ [rfm-4]
1. 31
2. 93
3. 62
4. 63
Given the following relative atomic masses: H = 1, N = 14 and O = 16; calculate the relative formula mass of ammonium nitrate, NH₄NO₃ [rfm-5]
1. 80
2. 31
3. 90
4. 180
Given the following relative atomic masses: H = 1, N = 14, O = 16 and S = 32; calculate the relative formula mass of ammonium sulfate, (NH₄)₂SO₄ [rfm-6]
1. 63
2. 132
3. 216
4. 100
Given the following relative atomic masses: H = 1, O = 16 and S = 32; calculate the relative formula mass of sulfuric acid, H₂SO₄ [rfm-7]
1. 49
2. 194
3. 98
4. 66
Given the following relative atomic masses: O = 16, Al = 27 and S = 32; calculate the relative formula mass of aluminium sulfate, Al₂(SO₄)₃ [rfm-8]
1. 75
2. 315
3. 171
4. 342
Given the following relative atomic masses: H = 1 and Cl = 35.5, calculate the relative formula mass of hydrochloric acid, HCl [rfm-9]
1. 36.5
2. 18
3. 35.5
4. 37.5
Given the following relative atomic masses: Na = 23 and Cl = 35.5, calculate the relative formula mass of sodium chloride, NaCl [rfm-10]
1. 40
2. 58.5
3. 49.5
4. 35
Given the following relative atomic masses: Ca = 40 and Cl = 35.5, calculate the relative formula mass of calcium chloride, CaCl₂ [rfm-11]
1. 75.5
2. 151
3. 111
4. 146.5
Given the following relative atomic masses: H = 1, O = 16 and Mg = 24, calculate the relative formula mass of magnesium hydroxide, Mg(OH)₂ [rfm-12]
1. 41
2. 82
3. 42
4. 58
Given the following relative atomic masses: Al = 27 and Cl = 35.5, calculate the relative formula mass of aluminium chloride, AlCl₃ [rfm-13]
1. 133.5
2. 62.5
3. 187.5
4. 98
Given the following relative atomic masses: H = 1, O = 16 and Al = 27, calculate the relative formula mass of aluminium hydroxide, Al(OH)₃ [rfm-14]
1. 44
2. 78
3. 132
4. 46
Given the following relative atomic masses: H = 1, C = 12 and O = 16; calculate the relative molecular mass of glucose, C₆H₁₂O₆ [rfm-5]
1. 29
2. 40
3. 180
4. 90
Given the following relative atomic masses: H = 1, C = 12 and O = 16; calculate the relative molecular mass of ethanol ('alcohol'), C₂H₅OH [rfm-16]
1. 29
2. 23
3. 41
4. 46
Given the following relative atomic masses: H = 1, C = 12 and O = 16; calculate the relative molecular mass of ethanoic acid ('acetic acid'), CH₃COOH [rfm-17]
1. 60
2. 29
3. 84
4. 58
Given the following relative atomic masses: O = 16 and Fe = 56; calculate the relative formula mass of iron(II) oxide, FeO [rfm-18]
1. 40
2. 72
3. 56
4. 16
Given the following relative atomic masses: O = 16 and Fe = 56; calculate the relative formula mass of iron(III) oxide, Fe₂O₃ [rfm-19]
1. 72
2. 200
3. 160
4. 216
Given the following relative atomic masses: O = 16 and Fe = 56; calculate the relative formula mass of the iron oxide, Fe₃O₄ [rfm-20]
1. 72
2. 272
3. 174
4. 232
Given the following relative atomic masses: H = 1 and C = 12; calculate the relative molecular mass of methane, CH₄ [rfm-21]
1. 16
2. 13
3. 52
4. 10
Given the following relative atomic masses: H = 1 and C = 12; calculate the relative molecular mass of propane, C₃H₈ [rfm-22]
1. 13
2. 44
3. 99
4. 40
Given the following relative atomic masses: C = 12 and O = 16; calculate the relative molecular mass of carbon dioxide, CO₂ [rfm-23]
1. 28
2. 56
3. 44
4. 14
Given the following relative atomic masses: C = 12, O = 16 and Cu = 64; calculate the relative formula mass of copper carbonate, CuCO₃ [rfm-24]
1. 92
2. 276
3. 148
4. 124
Given the following relative atomic masses: C = 12, O = 16 and Ca = 40; calculate the relative formula mass of calcium carbonate, CaCO₃ [rfm-25]
1. 100
2. 68
3. 204
4. 124
Which substance is likely to have a simple molecular structure? [cb-1]
1. melts at 17^oC, insoluble in water, non-conductor of electricity either when solid or molten
2. melts at 670^oC, dissolves in water, non-conductor of electricity when molten, undergoes electrolysis in aqueous solution
3. melts at 2600^oC, dissolves in water, non-conductor of electricity when solid, undergoes electrolysis in aqueous solution
4. melts at 1400^oC, insoluble in water, good conductor of electricity either when solid or molten
Which substance is likely to have a giant ionic structure? [cb-2]
1. melts at 17^oC, insoluble in water, non-conductor of electricity either when solid or molten
2. melts at 2800^oC, insoluble in water, non-conductor of electricity when molten or solid
3. melts at 2600^oC, dissolves in water, non-conductor of electricity when solid, undergoes electrolysis in aqueous solution
4. melts at 1400^oC, insoluble in water, good conductor of electricity either when solid or molten
Which substance is likely to have a metallic structure? [cb-3]
1. melts at 17^oC, insoluble in water, non-conductor of electricity either when solid or molten
2. melts at 2800^oC, insoluble in water, non-conductor of electricity when molten or solid
3. melts at 2600^oC, dissolves in water, non-conductor of electricity when solid, undergoes electrolysis in aqueous solution
4. melts at 1400^oC, insoluble in water, good conductor of electricity either when solid or molten
Which substance is likely to have a giant covalent structure? [cb-4]
1. melts at 17^oC, insoluble in water, non-conductor of electricity either when solid or molten
2. melts at 2800^oC, insoluble in water, non-conductor of electricity when molten or solid
3. melts at 2600^oC, dissolves in water, non-conductor of electricity when solid, undergoes electrolysis in aqueous solution
4. melts at 1400^oC, insoluble in water, good conductor of electricity either when solid or molten
Which substance is likely to have a simple molecular structure but form ions in aqueous solution? [cb-5]
1. melts at 17^oC, reacts with water, non-conductor of electricity either when solid, molten or in water
2. melts at 370^oC, dissolves in water, non-conductor of electricity when molten or solid, solution conducts electricity
3. melts at 2600^oC, dissolves in water, non-conductor of electricity when solid, undergoes electrolysis in aqueous solution
4. melts at 1400^oC, insoluble in water, good conductor of electricity either when solid or molten
A solution of sodium chloride conducts electricity because the? [cb-6]
1. current breaks down sodium chloride into sodium ions and chloride ions
2. ions formed from the water carry the current
3. sodium ions and chloride ions are free to move and carry the current
4. the free moving water molecules are good conductors
An atom can turn into an ion if it? [cb-7]
1. gains an electron
2. loses a proton
3. gains a neutron
4. loses a neutron
An atom can turn into an ion if it? [cb-8]
1. gains a proton
2. loses a proton
3. gains a neutron
4. loses an electron
When a covalent bond is formed between atoms of different elements ? [cb-9]
1. electrons are shared
2. electrons are transferred
3. protons are shared
4. protons are transferred
When an ionic bond is formed between atoms of different elements? [cb-10]
1. electrons are shared
2. electrons are transferred
3. protons are shared
4. protons are transferred
Metal atoms form ions with a positive charge by? [cb-11]
1. gaining protons
2. gaining electrons
3. losing electrons
4. losing protons
Non-metal atoms form ions with a negative charge by? [cb-12]
1. gaining protons
2. gaining electrons
3. losing electrons
4. losing protons
Atoms of Group 7 of the Periodic Table are most likely to form ions with? [cb-13]
1. a single negative charge by gaining one electron
2. a single positive charge by losing one electron
3. a double negative charge by gaining two electrons
4. a double positive charge by losing two electrons
Atoms of Group 1 of the Periodic Table are most likely to form ions with? [cb-14]
1. a single negative charge by gaining one electron
2. a single positive charge by losing one electron
3. a double negative charge by gaining two electrons
4. a double positive charge by losing two electrons
Atoms of Group 6 of the Periodic Table are most likely to form ions with [cb-15]
1. a single negative charge by gaining one electron
2. a single positive charge by losing one electron
3. a double negative charge by gaining two electrons
4. a double positive charge by losing two electrons
Atoms of Group 2 of the Periodic Table are most likely to form ions with? [cb-16]
1. a single negative charge by gaining one electron
2. a single positive charge by losing one electron
3. a double negative charge by gaining two electrons
4. a double positive charge by losing two electrons
Which electronic diagram is correct for the compound formed by combining a metal M, from Group 1, with a non-metal X from Group 7 of the Periodic Table? [cb-17]
Which electronic diagram is correct for the compound formed by combining a metal M, from Group 1, with a non-metal X from Group 6 of the Periodic Table? [cb-18]
Which electronic diagram is correct for the compound formed by combining a metal M, from Group 2, with a non-metal X from Group 6 of the Periodic Table? [cb-19]
Which electronic diagram is correct for the compound formed by combining a metal M, from Group 2, with a non-metal X from Group 7 of the Periodic Table? [cb-20]
Which electronic diagram is correct for the compound formed by combining a metal M, from Group 3, with a non-metal X from Group 6 of the Periodic Table? [cb-21]
Which electronic diagram is correct for the compound formed by combining a metal M, from Group 3, with a non-metal X from Group 7 of the Periodic Table? [cb-22]
Which of the following substances consists of an ionic lattice? [cb-23]
1. high melting point, solid doesn't conduct electricity, aqueous solution conducts electricity
2. high melting point, solid conducts electricity, insoluble in water
3. low melting point, solid conducts electricity, insoluble in water
4. low melting point, solid doesn't conduct electricity, aqueous solution doesn't conduct electricity
What is an ion? [cb-24]
1. an atom which has lost or gained electrons
2. a negatively charged particle in the shells of an atom
3. an uncharged particle in the nucleus of an atom
4. a positively charged particle in the nucleus of an atom
Which of the following substances consists of a metal lattice? [cb-25]
1. high melting point, solid doesn't conduct electricity, aqueous solution conducts electricity
2. high melting point, solid conducts electricity, insoluble in water
3. low melting point, solid doesn't conduct electricity, insoluble in water
4. low melting point, solid doesn't conduct electricity, aqueous solution doesn't conduct electricity
A substance has an ionic structure. It conducts electricity when molten but not when solid. The substance could be? [cb-26]
1. copper
2. petrol
3. ice
4. sodium chloride
Which of the following substances consists of small molecules? [cb-27]
1. high melting point, solid doesn't conduct electricity, aqueous solution conducts electricity
2. high melting point, solid conducts electricity, insoluble in water
3. low melting point, solid conducts electricity, insoluble in water
4. low melting point, solid doesn't conduct electricity, aqueous solution doesn't conduct electricity
Molten or dissolved sodium chloride conducts electricity. The current is carried in the melt by? [cb-28]
1. ions
2. metal atoms
3. molecules
4. electrons
Sodium chloride has a high melting point because it has? [cb-29]
1. a giant covalent 3-dimentional structure
2. many ions strongly attracted together
3. molecules packed tightly together
4. strong covalent double bonds
Sodium chloride is a typical ionic compound formed by combining a metal with a non-metal. Sodium chloride will? [cb-30]
1. conduct electricity when molten
2. conduct electricity when solid
3. have a low melting point
4. consist of small NaCl molecules
Sodium chloride is a typical ionic compound formed by combining a metal with a non-metal. Sodium chloride will? [cb-31]
1. not conduct electricity when molten
2. conduct electricity when dissolved in water
3. have a low melting point
4. consist of small NaCl molecules
Sodium chloride is a typical ionic compound formed by combining a metal with a non-metal. Sodium chloride will? [cb-32]
1. not conduct electricity when molten
2. not conduct electricity when dissolved in water
3. have a high melting point
4. consist of small NaCl molecules
Sodium chloride is a typical ionic compound formed by combining a metal with a non-metal. Sodium chloride will? [cb-33]
1. conduct electricity when solid
2. not conduct electricity when dissolved in water
3. have a low melting point
4. consist of charged particles
Sodium chloride is a typical ionic compound formed by combining a metal with a non-metal. Sodium chloride will? [cb-34]
1. not conduct electricity when solid
2. not conduct electricity when dissolved in water
3. have a low melting point
4. consist of NaCl molecules
Sodium chloride is a typical ionic compound formed by combining a metal with a non-metal. Sodium chloride will? [cb-35]
1. conduct electricity when solid
2. will dissolved in water
3. have a low melting point
4. consist of NaCl molecules
A substance has a giant covalent structure and has a high melting point. The substance could be [cb-36]
1. aluminium
2. copper
3. poly(ethene)
4. carbon (diamond)
Solid iodine consists of I₂ molecules symmetrically arranged in a crystal lattice. Relatively high temperatures are needed to change iodine molecules into iodine atoms because the? [cb-37]
1. forces holding the atoms together in an iodine molecule are strong
2. forces holding the molecules together in iodine are weak
3. iodine is an element and a non-metal
4. iodine is ionically bonded and the forces between ions are very strong
Solid iodine consists of I₂ molecules symmetrically arranged in a crystal lattice. Only relatively low temperatures (e.g. gentle warming) are needed to change solid iodine into iodine vapour because the? [cb-38]
1. forces holding the atoms together in an iodine molecule are strong
2. forces holding the molecules together in iodine are weak
3. iodine is an element and a non-metal
4. iodine is ionically bonded and the forces between ions are very strong
Potassium has an atomic number of 19. Which represents the electron configuration of the stable potassium ion K⁺? [cb-39]
Calcium has an atomic number of 20. Which represents the electron configuration of the stable calcium ion Ca²⁺? [cb-40]
Sulphur is a solid non-metallic element at room temperature, so it is? [cb-41]
1. a brittle substance
2. a good conductor of electricity
3. a good conductor of heat
4. a substance with a high melting point
Sulphur is a solid non-metallic element at room temperature, so it is? [cb-42]
1. easily bent into shape
2. a poor conductor of electricity
3. a good conductor of heat
4. a substance with a high melting point
Sulphur is a solid non-metallic element at room temperature, so it is? [cb-43]
1. easily bent into shape
2. a good conductor of electricity
3. a poor conductor of heat
4. a substance with a high melting point
Sulphur is a solid non-metallic element at room temperature, so it is? [cb-44]
1. easily bent into shape
2. a good conductor of electricity
3. a good conductor of heat
4. a substance with a low melting point
Copper is a metallic element so it is likely to be a? [cb-45]
1. substance with a high melting point
2. poor conductor of electricity
3. substance with a low boiling point
4. poor conductor of heat
Copper is a metallic element so it is likely to be a? [cb-46]
1. substance with a low melting point
2. good conductor of electricity
3. substance with a low boiling point
4. poor conductor of heat
Copper is a metallic element so it is likely to be a? [cb-47]
1. substance with a low melting point
2. poor conductor of electricity
3. substance with a high boiling point
4. poor conductor of heat
Copper is a metallic element so it is likely to be a? [cb-48]
1. substance with a low melting point
2. poor conductor of electricity
3. substance with a low boiling point
4. good conductor of heat
Copper is a metallic element so it is likely to be a? [cb-49]
1. substance with a low melting point
2. poor conductor of electricity
3. substance with a shiny surface
4. poor conductor of heat
Copper is a metallic element so it is likely to be a? [cb-50]
1. substance with a low melting point
2. poor conductor of electricity
3. substance easily hammered into shape
4. poor conductor of heat
To form an ion with a single positive charge, a metal atom must? [cb-51]
1. gain an electron
2. gain a proton
3. lose an electron
4. share an electron
To form an ion with a single negative charge, a non-metal atom must? [cb-52]
1. gain an electron
2. gain a proton
3. lose an electron
4. share an electron
Aluminium fluoride is an ionic compound. When this compound is formed from aluminium and fluorine? [cb-53]
1. electrons are shared
2. electrons are transferred
3. protons are shared
4. protons are transferred
Water is a covalent compound. When this compound is formed from hydrogen and oxygen? [cb-54]
1. electrons are shared
2. electrons are transferred
3. protons are shared
4. protons are transferred
From four substances described below, which is most likely to be an ionic compound? [cb-55]
1. melting point 20^oC, molten substance doesn't conduct electricity
2. melting point 150^oC, molten substance doesn't conduct electricity
3. melting point 800^oC, molten substance readily conducts electricity
4. melting point 1500^oC, molten substance is a poor electrical conductor
From four substances described below, which is most likely to consist of small molecules? [cb-56]
1. melting point 20^oC, molten substance doesn't conduct electricity
2. melting point 1150^oC, molten substance conducts electricity
3. melting point 480^oC, molten substance readily conducts electricity
4. melting point 1500^oC, molten substance is a poor electrical conductor
From four substances described below, which is most likely to consist of a giant covalent structure? [cb-57]
1. melting point 20^oC, molten substance doesn't conduct electricity
2. melting point 1150^oC, molten substance readily conducts electricity
3. melting point 480^oC, molten substance readily conducts electricity
4. melting point 1500^oC, molten substance is poor electrical conductor
Fluorine (F) has an atomic number of 9. Which represents the electron arrangement of the fluoride ion (F^-)? [cb-58]
Magnesium (Mg) has an atomic number of 12. Which represents the electron arrangement of the magnesium ion (Mg²⁺)? [cb-59]
Which electronic dot and cross diagram represents the compound formed when hydrogen (Q), at. no. 1 , combines with chlorine (X), Gp 7, at. no. 17? (only the outer shell o/x electrons are shown) [cb-60]
1. diagram (6)
2. diagram (2)
3. diagram (4)
4. diagram (1)
Which electronic dot and cross diagram represents the compound formed when hydrogen (Q), at. no. 1 , combines with oxygen (X), Gp 6, at. no. 8? (only the outer shell o/x electrons are shown) [cb-61]
1. diagram (3)
2. diagram (4)
3. diagram (7)
4. diagram (1)
Which electronic dot and cross diagram represents the compound formed when hydrogen (Q), at. no. 1 , combines with nitrogen (X), Gp 5, at. no. 7? (only the outer shell o/x electrons are shown) [cb-62]
1. diagram (6)
2. diagram (5)
3. diagram (7)
4. diagram (1)
Which electronic dot and cross diagram represents the compound formed when hydrogen (Q), at. no. 1 , combines with carbon (X), Gp 4, at. no. 6? (only the outer shell o/x electrons are shown) [cb-63]
1. diagram (3)
2. diagram (5)
3. diagram (7)
4. diagram (8)
Which electronic dot and cross diagram represents the compound formed when chlorine (Q), at. no. 17 , combines with carbon (X), Gp 4, at. no. 6? (only the outer shell o/x electrons are shown) [cb-64]
1. diagram (3)
2. diagram (5)
3. diagram (7)
4. diagram (8)

OCR GCSE 9-1 Gateway Science/Chemistry QUIZ on Topic C2 "Elements, Compounds and Mixtures" (HT)

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STATEMENT about ....	ELEMENT	COMPOUND	MIXTURE
has a fixed melting point?	true or false?	true or false?	true or false?