2025 OCR GCSE COMBINED SCIENCE A
J250/03 CHEMISTRY (FOUNDATION TIER)
Complete Question paper with Marking Scheme
Combined
Oxford Cambridge and RSA
Monday 19 May 2025 – Morning
GCSE (9–1) Combined Science A (Gateway
Science)
J250/03 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 00 3 *
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 20 pages.
ADVICE
, • Read each question carefully before you start your answer.
© OCR 2025 OCR is an exempt
[601/8687/2] DC Charity Turn over
(DE/JG) 353358/4
*
,
, 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 state of matter is shown in the diagram?
A A gas
B A liquid
C A solid
D A solution
Your answer [1]
2 24 g of magnesium reacts with oxygen to make 40 g of magnesium oxide.
What mass of magnesium oxide is made when 12 g of magnesium reacts?
A 20 g
B 24 g
C 36 g
D 40 g
Your answer [1]
© OCR 2025
J250/03 CHEMISTRY (FOUNDATION TIER)
Complete Question paper with Marking Scheme
Combined
Oxford Cambridge and RSA
Monday 19 May 2025 – Morning
GCSE (9–1) Combined Science A (Gateway
Science)
J250/03 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 00 3 *
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 20 pages.
ADVICE
, • Read each question carefully before you start your answer.
© OCR 2025 OCR is an exempt
[601/8687/2] DC Charity Turn over
(DE/JG) 353358/4
*
,
, 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 state of matter is shown in the diagram?
A A gas
B A liquid
C A solid
D A solution
Your answer [1]
2 24 g of magnesium reacts with oxygen to make 40 g of magnesium oxide.
What mass of magnesium oxide is made when 12 g of magnesium reacts?
A 20 g
B 24 g
C 36 g
D 40 g
Your answer [1]
© OCR 2025
