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2024 OXFORD CAMBRIDGE AND RSA GCSE (9–1) Combined Science A (Gateway Science) J250/04 Chemistry (Foundation Tier) QUESTION PAPER AND MARKING SCHEME (MERGED)$7.89
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Tuesday 11 June 2024 – Morning
GCSE (9–1) Combined Science A
(Gateway Science)
J250/04 Chemistry (Foundation Tier)
Time allowed: 1 hour 10 minutes
You must have:
• a ruler (cm/mm)
• the Data Sheet for GCSE (9–1) Combined Science A
F
(Chemistry) (inside this document)
You can use:
• a scientific or graphical calculator
• an HB pencil
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 using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 60.
• 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 24 pages.
ADVICE
• Read each question carefully before you start your answer.
OCR is an exempt Charity
Turn over
, 2
Section A
You should spend a maximum of 20 minutes on this section.
Write your answer to each question in the box provided.
1 What is an effect of increased levels of carbon dioxide in the Earth‟s atmosphere?
A Acid rain
B Global warming
C Light pollution
D Smog
Your answer [1]
2 What are catalysts found in biological systems called?
A Bacteria
B Enzymes
C Isotopes
D Vitamins
Your answer [1]
3 Burning fossil fuels can produce solids called particulates.
Which product of burning fossil fuels is an example of a particulate?
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