AQA CHEMISTRY PAPER 2
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 1H
Thursday 14 May 2020 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 7
this book. Write the question number against your answer(s).
TOTAL
• 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.
*jun208464c1H01*
IB/M/Jun20/E9 8464/C/1H
, 2
Do not write
outside the
0 1 This question is about the extraction of aluminium. box
0 1 . 1 An aluminium atom is represented as:
27
13Al
Give the number of electrons and neutrons in the aluminium atom.
[2 marks]
Number of electrons
Number of neutrons
Aluminium is extracted by the electrolysis of a molten mixture of aluminium oxide
and cryolite.
Figure 1 shows the cell used for the electrolysis.
Figure 1
0 1 . 2 Aluminium is produced by the reduction of aluminium oxide (Al2O3).
What is meant by the term reduction?
[1 mark]
*02*
IB/M/Jun20/8464/C/1H
, 3
Do not write
outside the
0 1 . 3 Oxygen is formed at the positive carbon electrodes. box
Explain why the positive carbon electrodes must be continually replaced.
[3 marks]
0 1 . 4 A substance conducts electricity because of free moving, charged particles.
What are the free moving, charged particles in a:
• carbon electrode (made from graphite)
• molten mixture of aluminium oxide and cryolite
• metal wire?
[3 marks]
Carbon electrode (made from graphite)
Molten mixture of aluminium oxide and cryolite
9
Metal wire
Turn over for the next question
Turn over ►
*03*
IB/M/Jun20/8464/C/1H
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 1H
Thursday 14 May 2020 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 7
this book. Write the question number against your answer(s).
TOTAL
• 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.
*jun208464c1H01*
IB/M/Jun20/E9 8464/C/1H
, 2
Do not write
outside the
0 1 This question is about the extraction of aluminium. box
0 1 . 1 An aluminium atom is represented as:
27
13Al
Give the number of electrons and neutrons in the aluminium atom.
[2 marks]
Number of electrons
Number of neutrons
Aluminium is extracted by the electrolysis of a molten mixture of aluminium oxide
and cryolite.
Figure 1 shows the cell used for the electrolysis.
Figure 1
0 1 . 2 Aluminium is produced by the reduction of aluminium oxide (Al2O3).
What is meant by the term reduction?
[1 mark]
*02*
IB/M/Jun20/8464/C/1H
, 3
Do not write
outside the
0 1 . 3 Oxygen is formed at the positive carbon electrodes. box
Explain why the positive carbon electrodes must be continually replaced.
[3 marks]
0 1 . 4 A substance conducts electricity because of free moving, charged particles.
What are the free moving, charged particles in a:
• carbon electrode (made from graphite)
• molten mixture of aluminium oxide and cryolite
• metal wire?
[3 marks]
Carbon electrode (made from graphite)
Molten mixture of aluminium oxide and cryolite
9
Metal wire
Turn over for the next question
Turn over ►
*03*
IB/M/Jun20/8464/C/1H
