Monday 18 May 2026 ? Morning
GCSE (9?1) Combined Science A
(Gateway Science)
J250/03 Chemistry (Foundation Tier)
Time allowed: 1 hour 10 minutes
*
2
6 You must have:
9 ? a ruler (cm/mm) F3 ? the Data Sheet for GCSE (9?1) Combined
3 Science A (Chemistry) (inside this document)
2
6 You can use:
4 ? a scientific or graphical calculator
8 ? an HB pencil
6 * J 2 5 0 0 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 28 pages.
ADVICE
? Read each question carefully before you start your answer.
© Cambridge OCR 2026 [601/8687/2] Cambridge OCR is an exempt Charity
DC (SL/SG) 363692/8 Turn over
for more:
, 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 The diagram shows an ammonia molecule, NH3.
H N H
H
What is represented by each line between the atoms?
A A covalent bond
B A metallic bond
C An intermolecular force
D An ionic bond
Your answer [1]
© Cambridge OCR 2026
for more:
, 3
2 The particle model is used to describe solids, liquids and gases.
Which diagram shows how the particle arrangement changes during condensation?
A
B
C
D
Your answer [1]
3 Compound X is liquid at 60 °C.
Which row shows the melting point and boiling point of compound X?
Melting point (°C) Boiling point (°C)
A 30 42
B 40 51
C 51 64
D 64 82
Your answer [1]
© Cambridge OCR 2026 Turn over
for more:
GCSE (9?1) Combined Science A
(Gateway Science)
J250/03 Chemistry (Foundation Tier)
Time allowed: 1 hour 10 minutes
*
2
6 You must have:
9 ? a ruler (cm/mm) F3 ? the Data Sheet for GCSE (9?1) Combined
3 Science A (Chemistry) (inside this document)
2
6 You can use:
4 ? a scientific or graphical calculator
8 ? an HB pencil
6 * J 2 5 0 0 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 28 pages.
ADVICE
? Read each question carefully before you start your answer.
© Cambridge OCR 2026 [601/8687/2] Cambridge OCR is an exempt Charity
DC (SL/SG) 363692/8 Turn over
for more:
, 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 The diagram shows an ammonia molecule, NH3.
H N H
H
What is represented by each line between the atoms?
A A covalent bond
B A metallic bond
C An intermolecular force
D An ionic bond
Your answer [1]
© Cambridge OCR 2026
for more:
, 3
2 The particle model is used to describe solids, liquids and gases.
Which diagram shows how the particle arrangement changes during condensation?
A
B
C
D
Your answer [1]
3 Compound X is liquid at 60 °C.
Which row shows the melting point and boiling point of compound X?
Melting point (°C) Boiling point (°C)
A 30 42
B 40 51
C 51 64
D 64 82
Your answer [1]
© Cambridge OCR 2026 Turn over
for more:
