Use pastpapers like this to help you revise
Understand exam format and structure
Past papers show the types of questions, mark allocations, and time limits,
helping students know what to expect in the real exam.
Identify frequently tested topics
By reviewing several past papers, students can spot patterns and common
themes that appear regularly.
Practice time management
Completing past papers under timed conditions helps students learn how
to pace themselves during the exam.
Improve exam technique
Students learn how to interpret command words (e.g. explain, compare,
evaluate) and structure answers effectively.
Assess strengths and weaknesses
Marking answers using mark schemes highlights areas that need more
revision.
Build confidence
Familiarity with exam-style questions reduces anxiety and increases
confidence going into the exam.
Improve accuracy and clarity
Repeated practice helps students write clearer, more precise answers and
avoid common mistakes.
Track progress over time
Comparing results from different past papers shows improvement and
helps students adjust revision strategies.
TYRIONPAPERS.COM
, Oxford Cambridge and RSA
Monday 19 May 2025 – Morning
GCSE (9−1) Chemistry B (Twenty First Century Science)
J258/01 Breadth in Chemistry (Foundation Tier)
Time allowed: 1 hour 45 minutes
F
You must have:
* 1 8 9 3 8 4 1 7 5 7 *
• a ruler (cm/mm)
• the Data Sheet for GCSE (9–1) Chemistry B
(inside this document)
You can use:
• a scientific or graphical calculator
• an HB pencil
* J 2 5 8 0 1 *
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 page 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 90.
• The marks for each question are shown in brackets [ ].
• This document has 32 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2025 [601/8685/9] OCR is an exempt Charity
DC (SL/JG) 355290/6 Turn over
for more: tyrionpapers.com
, 2
BLANK PAGE
DO NOT WRITE ON THIS PAGE
© OCR 2025
for more: tyrionpapers.com
, 3
1 Greenhouse gases absorb energy emitted by the Earth.
(a) Carbon dioxide is a greenhouse gas.
(i) Which of these gases is another greenhouse gas?
Tick (✓) one box.
Methane
Nitrogen
Oxygen
[1]
(ii) Which two statements describe the possible effects of increased levels of greenhouse gases?
Tick (✓) two boxes.
Decreased algae growth in water.
Flooding of low land.
Increased oxygen in the atmosphere.
Melting of polar ice caps.
[2]
(iii) Suggest two ways the amount of carbon dioxide in the environment can be reduced.
1 .......................................................................................................................................................
..........................................................................................................................................................
2 .......................................................................................................................................................
..........................................................................................................................................................
[2]
© OCR 2025 Turn over
for more: tyrionpapers.com
Understand exam format and structure
Past papers show the types of questions, mark allocations, and time limits,
helping students know what to expect in the real exam.
Identify frequently tested topics
By reviewing several past papers, students can spot patterns and common
themes that appear regularly.
Practice time management
Completing past papers under timed conditions helps students learn how
to pace themselves during the exam.
Improve exam technique
Students learn how to interpret command words (e.g. explain, compare,
evaluate) and structure answers effectively.
Assess strengths and weaknesses
Marking answers using mark schemes highlights areas that need more
revision.
Build confidence
Familiarity with exam-style questions reduces anxiety and increases
confidence going into the exam.
Improve accuracy and clarity
Repeated practice helps students write clearer, more precise answers and
avoid common mistakes.
Track progress over time
Comparing results from different past papers shows improvement and
helps students adjust revision strategies.
TYRIONPAPERS.COM
, Oxford Cambridge and RSA
Monday 19 May 2025 – Morning
GCSE (9−1) Chemistry B (Twenty First Century Science)
J258/01 Breadth in Chemistry (Foundation Tier)
Time allowed: 1 hour 45 minutes
F
You must have:
* 1 8 9 3 8 4 1 7 5 7 *
• a ruler (cm/mm)
• the Data Sheet for GCSE (9–1) Chemistry B
(inside this document)
You can use:
• a scientific or graphical calculator
• an HB pencil
* J 2 5 8 0 1 *
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 page 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 90.
• The marks for each question are shown in brackets [ ].
• This document has 32 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2025 [601/8685/9] OCR is an exempt Charity
DC (SL/JG) 355290/6 Turn over
for more: tyrionpapers.com
, 2
BLANK PAGE
DO NOT WRITE ON THIS PAGE
© OCR 2025
for more: tyrionpapers.com
, 3
1 Greenhouse gases absorb energy emitted by the Earth.
(a) Carbon dioxide is a greenhouse gas.
(i) Which of these gases is another greenhouse gas?
Tick (✓) one box.
Methane
Nitrogen
Oxygen
[1]
(ii) Which two statements describe the possible effects of increased levels of greenhouse gases?
Tick (✓) two boxes.
Decreased algae growth in water.
Flooding of low land.
Increased oxygen in the atmosphere.
Melting of polar ice caps.
[2]
(iii) Suggest two ways the amount of carbon dioxide in the environment can be reduced.
1 .......................................................................................................................................................
..........................................................................................................................................................
2 .......................................................................................................................................................
..........................................................................................................................................................
[2]
© OCR 2025 Turn over
for more: tyrionpapers.com
