2025 OCR GCSE Combined Science A (Gateway Science)
J250/04 Chemistry (Foundation Tier)
Complete Question paper with Marking Scheme Combined
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)
• 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 penci
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 [601/8687/2]
OCR is an exempt Charity
DC (WW/CB) 351885/3
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 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
, 3
4 The diagram shows the stages in a life-cycle assessment.
Disposal Raw materials
Use
Manufacture
X
What is stage X?
A Consumer research
B Design of the product
C Processing of the raw materials
D Transportation of the product
Your answer [1]
5 Part of the reactivity series is shown below.
Aluminium most reactive
Carbon
Tin
Lead least reactive
Which metal(s) are produced when their metal oxides are heated with carbon?
A Aluminium only
B Aluminium and lead
C Tin and lead
D Tin only
Your answer [1]
© OCR Turn over
2025
, 4
6 When marble chips react with an acid, they produce a colourless solution and a gas.
Which method is used to determine the rate of reaction?
A A disappearing cross experiment
B Gas chromatography
C Measuring the mass loss using a balance
D Measuring the volume of solution produced
Your answer [1]
7 Which Group 7 element is a red-brown liquid at room temperature?
A Fluorine
B Chlorine
C Bromine
D Iodine
Your answer [1]
8 Desalination is the removal of salt from seawater to produce drinking water.
The seawater is heated and the water vapour condensed and collected.
Which separation technique is used to produce drinking water in desalination?
A Chromatography
B Crystallisation
C Distillation
D Filtration
Your answer [1]
© OCR
2025
J250/04 Chemistry (Foundation Tier)
Complete Question paper with Marking Scheme Combined
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)
• 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 penci
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 [601/8687/2]
OCR is an exempt Charity
DC (WW/CB) 351885/3
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 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
, 3
4 The diagram shows the stages in a life-cycle assessment.
Disposal Raw materials
Use
Manufacture
X
What is stage X?
A Consumer research
B Design of the product
C Processing of the raw materials
D Transportation of the product
Your answer [1]
5 Part of the reactivity series is shown below.
Aluminium most reactive
Carbon
Tin
Lead least reactive
Which metal(s) are produced when their metal oxides are heated with carbon?
A Aluminium only
B Aluminium and lead
C Tin and lead
D Tin only
Your answer [1]
© OCR Turn over
2025
, 4
6 When marble chips react with an acid, they produce a colourless solution and a gas.
Which method is used to determine the rate of reaction?
A A disappearing cross experiment
B Gas chromatography
C Measuring the mass loss using a balance
D Measuring the volume of solution produced
Your answer [1]
7 Which Group 7 element is a red-brown liquid at room temperature?
A Fluorine
B Chlorine
C Bromine
D Iodine
Your answer [1]
8 Desalination is the removal of salt from seawater to produce drinking water.
The seawater is heated and the water vapour condensed and collected.
Which separation technique is used to produce drinking water in desalination?
A Chromatography
B Crystallisation
C Distillation
D Filtration
Your answer [1]
© OCR
2025
