AQA Chemistry Paper 2
Higher
Combined Science
Predicted Paper 2022
Name ………………………………………………
Date ………………………………………………
1 hour 15 minutes allowed
Similar to your real exam, each question in this gets harder towards the end of
each question, so if you find you can’t do the last part of a certain question, try
the next question – they all start off easier then get harder.
Grade boundaries
These are VERY rough guesses! Getting a 5 or 4 on this paper does not guarantee
you the same mark in the exam.
• 9 55
• 8 45
• 7 35
• 6 25
• 5 15
The information from the exam board gives us a broad overview of what is
covered in the exam. If a topic is not listed as a ‘major focus’ it can still come
up in a question, but that question might not be worth many marks. There are
questions in this paper that cover topics that are not a ‘major focus’ for the
exam, but don’t let that worry you!
1
,Exam Analysis
Advanced What do you
Marks Marks
Question Topic information for need to do to
available gained
2022 improve?
Purity, formulations
and
1 9 Chromatography chromatography
and Required
Practical Activity 12
The composition
Earth’s early
2 12 and evolution of the
atmosphere
earth’s atmosphere
Rate of reaction and
Rates of
3 20 Required Practical
reaction
Activity 11
Carbon compounds
4 13 Crude oil as fuels and
feedstock
Using the earth’s
resources and
5 7 Potable water
obtaining potable
water
Reversible reactions
Reversible
6 9 and dynamic
reactions
equilibrium
Total 70
2
, Question 1
a) Chromatography can be used to separate out solutions. Describe how.
(4 marks)
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
b) Determine the Rf value of spot B on the chromatogram below.
Rf= distance moved by substance
Distance moved by solvent
(3 marks)
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
3
Higher
Combined Science
Predicted Paper 2022
Name ………………………………………………
Date ………………………………………………
1 hour 15 minutes allowed
Similar to your real exam, each question in this gets harder towards the end of
each question, so if you find you can’t do the last part of a certain question, try
the next question – they all start off easier then get harder.
Grade boundaries
These are VERY rough guesses! Getting a 5 or 4 on this paper does not guarantee
you the same mark in the exam.
• 9 55
• 8 45
• 7 35
• 6 25
• 5 15
The information from the exam board gives us a broad overview of what is
covered in the exam. If a topic is not listed as a ‘major focus’ it can still come
up in a question, but that question might not be worth many marks. There are
questions in this paper that cover topics that are not a ‘major focus’ for the
exam, but don’t let that worry you!
1
,Exam Analysis
Advanced What do you
Marks Marks
Question Topic information for need to do to
available gained
2022 improve?
Purity, formulations
and
1 9 Chromatography chromatography
and Required
Practical Activity 12
The composition
Earth’s early
2 12 and evolution of the
atmosphere
earth’s atmosphere
Rate of reaction and
Rates of
3 20 Required Practical
reaction
Activity 11
Carbon compounds
4 13 Crude oil as fuels and
feedstock
Using the earth’s
resources and
5 7 Potable water
obtaining potable
water
Reversible reactions
Reversible
6 9 and dynamic
reactions
equilibrium
Total 70
2
, Question 1
a) Chromatography can be used to separate out solutions. Describe how.
(4 marks)
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
b) Determine the Rf value of spot B on the chromatogram below.
Rf= distance moved by substance
Distance moved by solvent
(3 marks)
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
3
