AQA GCSE Chemistry - Paper 1 Exam
Questions and Answers 100% Solved
What is the charge of a proton? - ✔✔+1
What is the charge of a neutron? - ✔✔0
What is the charge of an electron? - ✔✔-1
What is the relative mass of a proton? - ✔✔1
What is the relative mass of a neutron? - ✔✔1
What is the relative mass of an electron? - ✔✔Very small
How many types of atoms do elements contain? - ✔✔Only one type
What are compounds? - ✔✔Substances containing two or more different
elements that are chemically bonded together
What are mixtures? - ✔✔Substances containing two or more different
elements that are not chemically bonded together
What pattern is formed from carrying out paper chromatography? -
✔✔Chromatogram
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
,Which method of separation is useful to separate an insoluble solid from a
liquid? - ✔✔Filtration
Which method of separation is useful to separate a soluble solid from a
liquid? - ✔✔Evaporation or Crystillisation
Which method of distillation separates liquids with similar boiling points? -
✔✔Fractional distillation
Who discovered that the plum pudding model was wrong? - ✔✔Ernest
Rutherford
Who devised an experiment that proved the existence of the neutron? -
✔✔Niels Bohr
Why did Mendeleev leave gaps in his Table of Elements? - ✔✔To ensure
that elements with similar properties stayed in the same groups. The gaps
indicated the existence of undiscovered elements and allowed Mendeleev
to predict what their properties might be
How are the group number and the number of electrons in the outer shell of
an element related? - ✔✔The group number tells you how many electrons
are in the outer shell of an element. E.g. sodium is in Group 1 therefore it
has 1 electron on its outer shell
What kind of ions do metals form? - ✔✔Positive
2
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,Where are the non-metals on the periodic table? - ✔✔On the right hand
side
Give three properties which are specific to transition metals - ✔✔1) They
can form more than one ion e.g cobalt form Co2+
2) They are often coloured, therefore compounds which contain them are
colourful e.g. potassium chromate is yellow
3) They often make good catalysts e.g. nickel based catalysts are used in
the hydrogenation of alkenes
State three trends as you go down Group 1 - ✔✔1) Increased reactivity -
the outer electron is more easily lost as the attraction between the nucleus
and the electron decreases because the electron is further away from the
nucleus
2) Lower melting and boiling points
3) Higher relative atomic mass
What are the products of the reaction of a Group 1 metal and water -
✔✔Hydrogen gas and a metal hydroxide
E.g. sodium + water --> sodium hydroxide + hydrogen
3
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, What's the difference between the hardness of Group 1 and transition
metals? - ✔✔Transition metals are harder, denser and stronger than Group
1 metals
What's the difference between the reactivity of Group 1 and transition
metals? - ✔✔Group 1 metals are much more reactive than transition metals
What's the difference between the melting points of Group 1 and transition
metals? - ✔✔Transition metals have higher melting points than Group 1
metals
What trends occur as you go down Group 7? - ✔✔1) They become less
reactive - it's harder to gain an extra electron because the outer shell's
further from the nucleus
2) They have higher melting and boiling points
3) They have higher relative atomic masses
What is the charge of the ions that halogens form when they react with
metals? - ✔✔They form negative ions
What is the trend in boiling point as you go down Group 0? - ✔✔The boiling
points increase
What subatomic particles does the nucleus contain? - ✔✔Protons and
neutrons
4
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
Questions and Answers 100% Solved
What is the charge of a proton? - ✔✔+1
What is the charge of a neutron? - ✔✔0
What is the charge of an electron? - ✔✔-1
What is the relative mass of a proton? - ✔✔1
What is the relative mass of a neutron? - ✔✔1
What is the relative mass of an electron? - ✔✔Very small
How many types of atoms do elements contain? - ✔✔Only one type
What are compounds? - ✔✔Substances containing two or more different
elements that are chemically bonded together
What are mixtures? - ✔✔Substances containing two or more different
elements that are not chemically bonded together
What pattern is formed from carrying out paper chromatography? -
✔✔Chromatogram
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
,Which method of separation is useful to separate an insoluble solid from a
liquid? - ✔✔Filtration
Which method of separation is useful to separate a soluble solid from a
liquid? - ✔✔Evaporation or Crystillisation
Which method of distillation separates liquids with similar boiling points? -
✔✔Fractional distillation
Who discovered that the plum pudding model was wrong? - ✔✔Ernest
Rutherford
Who devised an experiment that proved the existence of the neutron? -
✔✔Niels Bohr
Why did Mendeleev leave gaps in his Table of Elements? - ✔✔To ensure
that elements with similar properties stayed in the same groups. The gaps
indicated the existence of undiscovered elements and allowed Mendeleev
to predict what their properties might be
How are the group number and the number of electrons in the outer shell of
an element related? - ✔✔The group number tells you how many electrons
are in the outer shell of an element. E.g. sodium is in Group 1 therefore it
has 1 electron on its outer shell
What kind of ions do metals form? - ✔✔Positive
2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
,Where are the non-metals on the periodic table? - ✔✔On the right hand
side
Give three properties which are specific to transition metals - ✔✔1) They
can form more than one ion e.g cobalt form Co2+
2) They are often coloured, therefore compounds which contain them are
colourful e.g. potassium chromate is yellow
3) They often make good catalysts e.g. nickel based catalysts are used in
the hydrogenation of alkenes
State three trends as you go down Group 1 - ✔✔1) Increased reactivity -
the outer electron is more easily lost as the attraction between the nucleus
and the electron decreases because the electron is further away from the
nucleus
2) Lower melting and boiling points
3) Higher relative atomic mass
What are the products of the reaction of a Group 1 metal and water -
✔✔Hydrogen gas and a metal hydroxide
E.g. sodium + water --> sodium hydroxide + hydrogen
3
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, What's the difference between the hardness of Group 1 and transition
metals? - ✔✔Transition metals are harder, denser and stronger than Group
1 metals
What's the difference between the reactivity of Group 1 and transition
metals? - ✔✔Group 1 metals are much more reactive than transition metals
What's the difference between the melting points of Group 1 and transition
metals? - ✔✔Transition metals have higher melting points than Group 1
metals
What trends occur as you go down Group 7? - ✔✔1) They become less
reactive - it's harder to gain an extra electron because the outer shell's
further from the nucleus
2) They have higher melting and boiling points
3) They have higher relative atomic masses
What is the charge of the ions that halogens form when they react with
metals? - ✔✔They form negative ions
What is the trend in boiling point as you go down Group 0? - ✔✔The boiling
points increase
What subatomic particles does the nucleus contain? - ✔✔Protons and
neutrons
4
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
