Exam (elaborations)
AQA GCSE COMBINED SCIENCE TRILOGY Higher Tier Chemistry Paper 2H June 2023
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AQA GCSE COMBINED SCIENCE TRILOGY Higher Tier Chemistry Paper 2H June 2023
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QAQA
Please write clearly in block capitals.
Centre number Candidate number
Surname Forename(s)
Candidate signature
I declare this is my own work.
H
GCSE
COMBINED SCIENCE: TRILOGY
Higher Tier
Chemistry Paper
2H
Tuesday 13 June 2023 Morning Time allowed: 1 hour 15 minutes
Materials For Examiner’s Use
For this paper you must have:
a ruler Question Mark
a scientific calculator 1
the periodic table (enclosed).
2
Instructions 3
Use black ink or black ball-point pen. 4
Pencil should only be used for drawing. 5
Fill in the boxes at the top of this page.
6
Answer all questions in the spaces provided.
If you need extra space for your answer(s), use the lined pages at the end of TOTAL
this book. Write the question number against your answer(s).
Do all rough work in this book. Cross through any work you do not want to be
marked.
In all calculations, show clearly how you work out your answer.
Information
The maximum mark for this paper is 70.
The marks for questions are shown in brackets.
You are expected to use a calculator where appropriate.
You are reminded of the need for good English and clear presentation in your answers.
1
,Q
8464/C/2H
2
, 2
Do not write
There are no questions printed on this page outside the
box
DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED
, 3
Do not write
outside the
0 1 The combustion of fuels is a source of atmospheric pollutants. box
0 1 . 1 Methane is a fuel.
Balance the equation for the combustion of methane.
[1 mark]
CH4 + O2 → CO2 + H2O
0 1 .2 Many fuels are mixtures.
Petrol and diesel are mixtures of hydrocarbons.
Table 1 shows properties of petrol and of diesel.
Table 1
Petrol Diesel
Range of number of carbon atoms in
4 to 12 12 to 20
a hydrocarbon molecule
Range of boiling points in °C 40 to 205 250 to 350
Compare the properties of petrol and diesel.
Use Table 1.
[2 marks]
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