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OCR GCSE JUNE 2022 CHEMISTRY A J248 QUESTION PAPER 4
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OCR GCSE JUNE 2022 CHEMISTRY A J248 QUESTION PAPER 4
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, Oxford Cambridge and RSA
H
Monday 20 June 2022 – Morning
GCSE (9–1) Chemistry A (Gateway Science)
J248/04 Paper 4 (Higher Tier)
Time allowed: 1 hour 45 minutes
You must have:
* 8 9 9 2 3 2 3 0 4 4 *
• a ruler (cm/mm)
• the Data Sheet for GCSE (9–1) Chemistry A
(inside this document)
You can use:
• a scientific or graphical calculator
• an HB pencil
* J 2 4 8 0 4 *
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for a correct method, even if the answer is wrong.
INFORMATION
• The total mark for this paper is 90.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 32 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2022 [601/8663/X] OCR is an exempt Charity
DC (ST/SG) 308811/4 Turn over
, 2
SECTION A
Answer all the questions.
You should spend a maximum of 30 minutes on this section.
Write your answer to each question in the box provided.
1 Large molecules produced by fractional distillation are cracked to make smaller molecules.
Octane, C8H18, is cracked to form ethene, C2H4, and one other product.
What is the formula of the other product?
A C3H6
B C6H12
C C6H14
D C8H16
Your answer [1]
2 Dilute hydrochloric acid reacts with marble chips.
Beaker
Dilute hydrochloric acid
Marble chips
Balance
Which statement about the reaction is correct?
A The reaction is faster after 10 seconds than it is after 3 seconds.
B The reaction slows down with time.
C The reaction proceeds at a constant rate.
D The mass of the beaker and its contents stay the same.
Your answer [1]
© OCR 2022
, 3
3 Which functional group does a monomer need to contain to form addition polymers?
A
C C
B
C C
C
O H
D O
C
O H
Your answer [1]
4 Which test identifies sulfate ions?
A A flame test
B Adding a few drops of barium chloride solution
C Adding a few drops of silver nitrate solution
D Adding a few drops of sodium hydroxide solution
Your answer [1]
© OCR 2022 Turn over
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