AQA GCSE Chemistry Questions with complete solution 2024
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AQA GCSE
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AQA GCSE
AQA GCSE Chemistry Questions with complete solution 2024 What is the charge of a proton? - correct answer +1
What is the charge of a neutron? - correct answer 0
What is the charge of an electron? - correct answer -1
What is the relative mass of a proton? - correct answer 1
What...
AQA GCSE Chemistry - Paper 1
What is the charge of a proton? - correct answer ✔+1
What is the charge of a neutron? - correct answer ✔0
What is the charge of an electron? - correct answer ✔-1
What is the relative mass of a proton? - correct answer ✔1
What is the relative mass of a neutron? - correct answer ✔1
What is the relative mass of an electron? - correct answer ✔Very small
How many types of atoms do elements contain? - correct answer ✔Only one
type
What are compounds? - correct answer ✔Substances containing two or
more different elements that are chemically bonded together
What are mixtures? - correct answer ✔Substances containing two or more
different elements that are not chemically bonded together
What pattern is formed from carrying out paper chromatography? - correct
answer ✔Chromatogram
,Which method of separation is useful to separate an insoluble solid from a
liquid? - correct answer ✔Filtration
Which method of separation is useful to separate a soluble solid from a liquid?
- correct answer ✔Evaporation or Crystillisation
Which method of distillation separates liquids with similar boiling points? -
correct answer ✔Fractional distillation
Who discovered that the plum pudding model was wrong? - correct answer
✔Ernest Rutherford
Who devised an experiment that proved the existence of the neutron? -
correct answer ✔Niels Bohr
Why did Mendeleev leave gaps in his Table of Elements? - correct answer
✔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? - correct answer ✔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? - correct answer ✔Positive
Where are the non-metals on the periodic table? - correct answer ✔On the
right hand side
,Give three properties which are specific to transition metals - correct answer
✔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 - correct answer ✔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 - correct
answer ✔Hydrogen gas and a metal hydroxide
E.g. sodium + water --> sodium hydroxide + hydrogen
What's the difference between the hardness of Group 1 and transition metals?
- correct answer ✔Transition metals are harder, denser and stronger than
Group 1 metals
What's the difference between the reactivity of Group 1 and transition metals?
- correct answer ✔Group 1 metals are much more reactive than transition
metals
What's the difference between the melting points of Group 1 and transition
metals? - correct answer ✔Transition metals have higher melting points than
Group 1 metals
, What trends occur as you go down Group 7? - correct answer ✔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? - correct answer ✔They form negative ions
What is the trend in boiling point as you go down Group 0? - correct answer
✔The boiling points increase
What subatomic particles does the nucleus contain? - correct answer
✔Protons and neutrons
What is relative atomic mass? - correct answer ✔The mass number which
refers to the element as a whole
How are positive ions formed? - correct answer ✔A metal atom loses
electrons
How are negative ions formed? - correct answer ✔A non-metal gains
electrons
What is air a mixture of? - correct answer ✔Gases, mainly nitrogen, oxygen,
carbon dioxide and argon
What is crude oil a mixture of? - correct answer ✔Different length
hydrocarbon molecules
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