AQA GCSE FINAL EXAM QUESTIONS
AND ANSWERS
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
AND ANSWERS
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
