2025 OCR GCSE COMBINED SCIENCE A (GATEWAY SCIENCE)
J250/04 CHEMISTRY (FOUNDATION TIER)
Complete Question paper with Marking Scheme
Combined
Oxford Cambridge and RSA
Friday 13 June 2025 – 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)
F
• the Data Sheet for GCSE (9–1)
Combined Science A (Chemistry)
(inside this document)
You can use:
• a scientific or graphical calculator
• an HB pencil
* J 2 5
0 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 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 2025 OCR is an
[601/8687/2] DC exempt Charity Turn over
(WW/CB)
351885/3
,
, 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 Which part of the Periodic Table contains the least reactive non-metals?
D
C
A
B
Your answer [1]
2 Which gas in the atmosphere causes acid rain?
A Carbon monoxide
B Hydrogen
C Oxygen
D Sulfur dioxide
Your answer [1]
3 When is electrolysis used to extract a metal from its ore?
A The metal dissolves in water.
B The metal has a high melting point.
C The metal is in high demand.
D The metal is very reactive.
Your answer [1]
© OCR 2025
J250/04 CHEMISTRY (FOUNDATION TIER)
Complete Question paper with Marking Scheme
Combined
Oxford Cambridge and RSA
Friday 13 June 2025 – 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)
F
• the Data Sheet for GCSE (9–1)
Combined Science A (Chemistry)
(inside this document)
You can use:
• a scientific or graphical calculator
• an HB pencil
* J 2 5
0 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 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 2025 OCR is an
[601/8687/2] DC exempt Charity Turn over
(WW/CB)
351885/3
,
, 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 Which part of the Periodic Table contains the least reactive non-metals?
D
C
A
B
Your answer [1]
2 Which gas in the atmosphere causes acid rain?
A Carbon monoxide
B Hydrogen
C Oxygen
D Sulfur dioxide
Your answer [1]
3 When is electrolysis used to extract a metal from its ore?
A The metal dissolves in water.
B The metal has a high melting point.
C The metal is in high demand.
D The metal is very reactive.
Your answer [1]
© OCR 2025
