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2025/ 2026 GCSE June 2024 OCR Combined Science A Paper 4 Including Mark Scheme 100% Verified with Correct Questions and Answers

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Access the GCSE June 2024 OCR Combined Science A Paper 4 Including Mark Scheme with solution, featuring 100% verified questions and answers aligned with the official OCR Combined Science A specification. This revision resource supports students in reviewing key biology, chemistry, and physics concepts, understanding examiner marking criteria, and improving exam technique across Paper 4 topics. Updated 2025/ 2026 materials provide realistic exam practice, strengthen problem-solving skills, and enhance overall performance in OCR GCSE Combined Science assessments.

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GCSE JUNE 2024 OCR Combined
GCSEScience
JUNE 2024
A PAPER
OCR 4
Combined
INCLUDING
GCSEScience
JUNE
MARK
2024
A PAPER
SCHEME.pdf
OCR 4
Combined
INCLUDING
Science
MARKA PAPER
SCHEME.pdf
4 INCLUDING MARK SCHEME.pdf




Tuesday 11 June 2024 – Morning
GCSE (9–1) Combined Science A
(Gateway Science)
J250/04 Chemistry (Foundation Tier)
Time allowed: 1 hour 10 minutes




GCSE JUNE 2024 OCR Combined
GCSEScience
JUNE 2024
A PAPER
OCR 4
Combined
INCLUDING
GCSEScience
JUNE
MARK
2024
A PAPER
SCHEME.pdf
OCR 4
Combined
INCLUDING
Science
MARKA PAPER
SCHEME.pdf
4 INCLUDING MARK SCHEME.pdf

,GCSE JUNE 2024 OCR Combined
GCSEScience
JUNE 2024
A PAPER
OCR 4
Combined
INCLUDING
GCSEScience
JUNE
MARK
2024
A PAPER
SCHEME.pdf
OCR 4
Combined
INCLUDING
Science
MARKA PAPER
SCHEME.pdf
4 INCLUDING MARK SCHEME.pdf



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?

A Carbon

B Carbon monoxide

C Nitrogen dioxide

D Sulfur dioxide


Your answer [1]




© OCR 2024




GCSE JUNE 2024 OCR Combined
GCSEScience
JUNE 2024
A PAPER
OCR 4
Combined
INCLUDING
GCSEScience
JUNE
MARK
2024
A PAPER
SCHEME.pdf
OCR 4
Combined
INCLUDING
Science
MARKA PAPER
SCHEME.pdf
4 INCLUDING MARK SCHEME.pdf

,GCSE JUNE 2024 OCR Combined
GCSEScience
JUNE 2024
A PAPER
OCR 4
Combined
INCLUDING
GCSEScience
JUNE
MARK
2024
A PAPER
SCHEME.pdf
OCR 4
Combined
INCLUDING
Science
MARKA PAPER
SCHEME.pdf
4 INCLUDING MARK SCHEME.pdf



3
4 The word equation shows how iron is extracted from iron oxide.

iron oxide + carbon iron + carbon dioxide

The table shows the masses of the reactants and products.


Iron oxide Carbon Iron Carbon dioxide


Mass (tonnes) 3200 360 1320


What is the mass of iron produced?

A 1880 tonnes

B 2240 tonnes

C 2840 tonnes

D 4880 tonnes


Your answer [1]


5 Scientists think the Earth’s oxygen-rich atmosphere developed due to photosynthesis by plants.

Which gas in the Earth’s early atmosphere did plants absorb during photosynthesis?

A Ammonia

B Carbon dioxide

C Methane

D Sulfur dioxide


Your answer [1]




© OCR 2024 Turn over



GCSE JUNE 2024 OCR Combined
GCSEScience
JUNE 2024
A PAPER
OCR 4
Combined
INCLUDING
GCSEScience
JUNE
MARK
2024
A PAPER
SCHEME.pdf
OCR 4
Combined
INCLUDING
Science
MARKA PAPER
SCHEME.pdf
4 INCLUDING MARK SCHEME.pdf

, GCSE JUNE 2024 OCR Combined
GCSEScience
JUNE 2024
A PAPER
OCR 4
Combined
INCLUDING
GCSEScience
JUNE
MARK
2024
A PAPER
SCHEME.pdf
OCR 4
Combined
INCLUDING
Science
MARKA PAPER
SCHEME.pdf
4 INCLUDING MARK SCHEME.pdf



4
6 It is thought that the gases in Earth’s early atmosphere were released by volcanoes.

The table shows the amounts of different gases released by a volcano.

Which of the gases are carbon dioxide and water vapour?

Gas Percentage of gas
(%)
W 64
X 8
Y 2
Z 26


A W and Z

B W and Y

C X and Y

D X and Z


Your answer [1]


7 A student adds some metals to different solutions.

The table shows their results.

Metal Solution Reaction Key:
3 = reaction
Copper nickel sulfate 7
7 = no reaction
Nickel tin sulfate 3
Tin copper sulfate 3


What do the results tell the student about the reactivity of the three metals?

A All three metals have the same reactivity.

B Copper is the most reactive metal.

C Nickel is the most reactive metal.

D Tin is the most reactive metal.


Your answer [1]




© OCR 2024




GCSE JUNE 2024 OCR Combined
GCSEScience
JUNE 2024
A PAPER
OCR 4
Combined
INCLUDING
GCSEScience
JUNE
MARK
2024
A PAPER
SCHEME.pdf
OCR 4
Combined
INCLUDING
Science
MARKA PAPER
SCHEME.pdf
4 INCLUDING MARK SCHEME.pdf

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Uploaded on
June 16, 2026
Number of pages
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Written in
2025/2026
Type
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