AQA GCSE Chemistry Paper 1 (2026
UPDATE) Comprehensive questions
and verified answers (detailed &
elaborated) Actual Exam!!!
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
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 Crystallization
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
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 colored, therefore compounds which contain them
are colorful 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
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?
UPDATE) Comprehensive questions
and verified answers (detailed &
elaborated) Actual Exam!!!
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
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 Crystallization
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
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 colored, therefore compounds which contain them
are colorful 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
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?
