GCSE CHEMISTRY A (GATEWAY SCIENCE) — Actual June 2025 PAST PAPER: Chemistry A
(Foundation Tier). All Assessment Questions & Mark Scheme [OCR J248/02]
Exam Resource Summary
The GCSE (9–1) Chemistry A (Gateway Science) June 2025 Foundation Tier Paper (OCR J248/02)
integrates the full official examination paper with its detailed mark scheme to provide a structured and
accessible revision resource. This paper assesses students’ understanding of core chemical concepts,
including atomic structure, bonding, chemical reactions, energy changes, rates of reaction, the periodic
table, and key practical skills. Candidates are required to apply knowledge to practical and familiar
scenarios, interpret and analyse data, and explain chemical processes using correct scientific terminology.
By presenting each question alongside its corresponding marking criteria, this merged resource clarifies
examiner expectations, demonstrates the level of detail and reasoning required for high marks, and guides
students in producing accurate, well-organised answers. This integrated format supports effective
revision, strengthens exam technique, and prepares learners thoroughly for the 2026 OCR GCSE
Chemistry A (Gateway Science) Foundation Tier examination.
OCR is an exempt Charity
Turn over
, 2
Section A
You should spend a maximum of 30 minutes on this section.
Write your answer to each question in the box provided.
1 Butane is an alkane.
What is a use for butane?
A Ceramics
B Fertiliser
C Fuel
D Surfacing roads
Your answer [1]
2 A student adds sodium hydroxide to a solution containing copper ions.
Which colour precipitate is made?
A Blue
B Green
C Orange-brown
D White
Your answer [1]
3 Which molecule can be cracked to make octane, C8H18?
A C6H12
B C6H14
C C8H16
D C12H26
Your answer [1]
© OCR 2025
, 3
4 What is a property of a Group 1 metal?
A Brittle
B Does not conduct electricity
C Forms coloured compounds
D Low density
Your answer [1]
5 Crude oil is separated into fractions by fractional distillation.
X
50 °C
120 °C
250 °C
Crude oil vapour 350 °C
Which fraction is obtained at X?
A Bitumen
B Diesel
C LPG
D Petrol
Your answer [1]
© OCR 2025 Turn over
, 4
6 Magnesium reacts with excess hydrochloric acid.
What would increase the rate of the reaction?
A Use a larger volume of hydrochloric acid.
B Use a smaller beaker for the reaction.
C Use larger pieces of magnesium.
D Use more concentrated hydrochloric acid.
Your answer [1]
7 A student measures the volume of gas made during a reaction.
The graph shows their results.
60
50
40
Volume of
gas 30
(cm3)
20
10
0
0 5 10 15 20 25 30 35 40
Time (s)
Which statement about the reaction is not correct?
A The final volume of gas made is 60 cm3.
B The rate of reaction speeds up during the reaction.
C The reaction finishes at 30 s.
D The volume of gas made increases during the reaction.
Your answer [1]
© OCR 2025
(Foundation Tier). All Assessment Questions & Mark Scheme [OCR J248/02]
Exam Resource Summary
The GCSE (9–1) Chemistry A (Gateway Science) June 2025 Foundation Tier Paper (OCR J248/02)
integrates the full official examination paper with its detailed mark scheme to provide a structured and
accessible revision resource. This paper assesses students’ understanding of core chemical concepts,
including atomic structure, bonding, chemical reactions, energy changes, rates of reaction, the periodic
table, and key practical skills. Candidates are required to apply knowledge to practical and familiar
scenarios, interpret and analyse data, and explain chemical processes using correct scientific terminology.
By presenting each question alongside its corresponding marking criteria, this merged resource clarifies
examiner expectations, demonstrates the level of detail and reasoning required for high marks, and guides
students in producing accurate, well-organised answers. This integrated format supports effective
revision, strengthens exam technique, and prepares learners thoroughly for the 2026 OCR GCSE
Chemistry A (Gateway Science) Foundation Tier examination.
OCR is an exempt Charity
Turn over
, 2
Section A
You should spend a maximum of 30 minutes on this section.
Write your answer to each question in the box provided.
1 Butane is an alkane.
What is a use for butane?
A Ceramics
B Fertiliser
C Fuel
D Surfacing roads
Your answer [1]
2 A student adds sodium hydroxide to a solution containing copper ions.
Which colour precipitate is made?
A Blue
B Green
C Orange-brown
D White
Your answer [1]
3 Which molecule can be cracked to make octane, C8H18?
A C6H12
B C6H14
C C8H16
D C12H26
Your answer [1]
© OCR 2025
, 3
4 What is a property of a Group 1 metal?
A Brittle
B Does not conduct electricity
C Forms coloured compounds
D Low density
Your answer [1]
5 Crude oil is separated into fractions by fractional distillation.
X
50 °C
120 °C
250 °C
Crude oil vapour 350 °C
Which fraction is obtained at X?
A Bitumen
B Diesel
C LPG
D Petrol
Your answer [1]
© OCR 2025 Turn over
, 4
6 Magnesium reacts with excess hydrochloric acid.
What would increase the rate of the reaction?
A Use a larger volume of hydrochloric acid.
B Use a smaller beaker for the reaction.
C Use larger pieces of magnesium.
D Use more concentrated hydrochloric acid.
Your answer [1]
7 A student measures the volume of gas made during a reaction.
The graph shows their results.
60
50
40
Volume of
gas 30
(cm3)
20
10
0
0 5 10 15 20 25 30 35 40
Time (s)
Which statement about the reaction is not correct?
A The final volume of gas made is 60 cm3.
B The rate of reaction speeds up during the reaction.
C The reaction finishes at 30 s.
D The volume of gas made increases during the reaction.
Your answer [1]
© OCR 2025
