Elements, compounds and mixtures
2.1What the syllabus asks of you
- Describe the differences between elements, compounds and mixtures
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Chapter 2: Elements, compounds and mixtures
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Every question on Elements, compounds and mixtures, untimed, marked as you go.
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15 questions
1May / June 2026 · Paper 11 · Q2Show mark scheme →
Adiagram A
Bdiagram B
Cdiagram C
Ddiagram D
Mark scheme
2May / June 2026 · Paper 12 · Q2Show mark scheme →
AAir is a mixture because it is made up entirely of different compounds.
BChlorine is an element because all of its atoms have the same atomic number and mass number.
CLead(II) bromide is a compound because it is impossible to separate it into its elements.
DStainless steel is a mixture because it can have a variable composition of different elements.
Mark scheme
3Oct / Nov 2025 · Paper 11 · Q3Show mark scheme →
Astatement 1: X is a compound; statement 2: X contains exactly four different elements
Bstatement 1: X is a compound; statement 2: X contains exactly five different elements
Cstatement 1: X is a mixture; statement 2: X contains exactly four different elements
Dstatement 1: X is a mixture; statement 2: X contains exactly five different elements
Mark scheme
4May / June 2025 · Paper 11 · Q2Show mark scheme →
Ahydrogen | water and sodium | aqueous sodium hydroxide
Bhydrogen and sodium | water | aqueous sodium hydroxide
Caqueous sodium hydroxide | hydrogen and sodium | water
Dsodium and water | aqueous sodium hydroxide | hydrogen
Mark scheme
5May / June 2025 · Paper 12 · Q3Show mark scheme →
AAll compounds are ionic.
BAll compounds conduct electricity when molten.
CEach atom of an element contains the same number of protons.
DIn a mixture of substances, the proportions of the substances are always the same.
Mark scheme
6Oct / Nov 2024 · Paper 11 · Q3Show mark scheme →
A1 and 3
B1 only
C2 and 3
D2 only
Mark scheme
7May / June 2024 · Paper 11 · Q2Show mark scheme →
Astatement 1: X is a mixture with the ratio 4 : 7 by mass of iron and sulfur; statement 2: X is a compound with the ratio 4 : 7 by mass of iron and sulfur
Bstatement 1: X is a mixture with the ratio 7 : 4 by mass of iron and sulfur; statement 2: X is a compound with the ratio 7 : 4 by mass of iron and sulfur
Cstatement 1: X is a mixture with the formula FeS; statement 2: X is a compound with the formula FeS
Dstatement 1: X is a mixture with the formula FeSO4; statement 2: X is a compound with the formula FeSO4
Mark scheme
8May / June 2024 · Paper 12 · Q2Show mark scheme →
Aa compound
Ba mixture of compounds and elements
Ca mixture of elements
Dan element
Mark scheme
9Oct / Nov 2023 · Paper 11 · Q3Show mark scheme →
Acopper; brass; zinc
Bmethane; carbon; petroleum
Cnitrogen; carbon dioxide; water vapour
Doxygen; glucose; air
Mark scheme
10Oct / Nov 2023 · Paper 12 · Q3Show mark scheme →
AW | Z | X and Y
BW | Y | X and Z
CY | W and Z | X
DY | W | X and Z
Mark scheme
11May / June 2022 · Paper 12 · Q8Show mark scheme →
Agraphite, iron | methane, water | air, copper
Bgraphite, iron | sand, water | air, brass
Ciron, water | methane, graphite | air, brass
Dwater, methane | air, graphite | iron, brass
Mark scheme
12Oct / Nov 2021 · Paper 11 · Q26Show mark scheme →
A0 elements, 3 compounds, 0 mixtures
B1 element, 2 compounds, 0 mixtures
C1 element, 1 compound, 1 mixture
D2 elements, 0 compounds, 1 mixture
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13Oct / Nov 2019 · Paper 12 · Q5Show mark scheme →
Adry air
Bethanol
Csteel
Dpetrol (gasoline)
Mark scheme
14May / June 2018 · Paper 11 · Q9Show mark scheme →
AAll compounds are ionic.
BAll compounds conduct electricity when molten.
CEach element only contains one type of atom.
DIn a mixture of substances, the proportions of the substances are always the same.
Mark scheme
15Oct / Nov 2017 · Paper 11 · Q7Show mark scheme →
AEqual masses of the elements must be used.
BThe compound shows similar chemical properties to those of the elements.
CThe elements must both be non-metals.
DWhen the elements react together, ionic or covalent compounds form.
Mark scheme