GCSE 2025
Chemistry A (Gateway Science)
J248/01: Paper 1 (Foundation tier)
*1374475270*
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 [ ].
• 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.
© OCR 2024 [601/8663/X] DC (CJ/FC) 339902/6
OCR is an exempt Charity
Turn over
Section A
You should spend a maximum of 30 minutes on this section.
Write your answer to each question in the box provided.
1 Which part of an atom is negatively charged?
A Electron
B Neutron
C Nucleus
D Proton
, 2
Your answer
2 Which of these changes is a chemical change?
A Ice melting
B Shaping hot metal with a hammer
C Water condensing
D Wood burning
Your answer
3 Which group of elements on the Periodic Table has a full outer shell of electrons?
A 0
B 1
C 2
D 7
Your answer [1] 4 Sodium chloride, NaCl , is an ionic compound.
How are the ions held together in sodium chloride?
A Covalent bonds
B Delocalised electrons
C Electrostatic forces
D Intermolecular forces
Your answer
5 Which equipment is used for filtration?
© OCR 2024
, 3
A
B
C
D
Your answer [1]
6 Which scientist suggested the idea that electrons exist in electron shells?
A Bohr
B Dalton
C Rutherford
D Thomson
Your answer
7 Which row describes a formulation?
Description Amount of chemicals
A compound exact
B mixture exact
© OCR 2024 Turn over
, 4
C compound random
D mixture random
Your answer
8 The table shows information about some atoms and ions.
Which two are isotopes?
Atom or ion Number of protons Number of neutrons Number of
electrons
1 17 18 17
2 17 18 18
3 17 20 17
4 18 20 18
A 1 and 2
B 1 and 3
C 2 and 4
D 3 and 4
Your answer [1] 9 Which dot and cross diagram shows the structure of
a fluorine molecule, F2?
A
F
© OCR 2024
Chemistry A (Gateway Science)
J248/01: Paper 1 (Foundation tier)
*1374475270*
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 [ ].
• 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.
© OCR 2024 [601/8663/X] DC (CJ/FC) 339902/6
OCR is an exempt Charity
Turn over
Section A
You should spend a maximum of 30 minutes on this section.
Write your answer to each question in the box provided.
1 Which part of an atom is negatively charged?
A Electron
B Neutron
C Nucleus
D Proton
, 2
Your answer
2 Which of these changes is a chemical change?
A Ice melting
B Shaping hot metal with a hammer
C Water condensing
D Wood burning
Your answer
3 Which group of elements on the Periodic Table has a full outer shell of electrons?
A 0
B 1
C 2
D 7
Your answer [1] 4 Sodium chloride, NaCl , is an ionic compound.
How are the ions held together in sodium chloride?
A Covalent bonds
B Delocalised electrons
C Electrostatic forces
D Intermolecular forces
Your answer
5 Which equipment is used for filtration?
© OCR 2024
, 3
A
B
C
D
Your answer [1]
6 Which scientist suggested the idea that electrons exist in electron shells?
A Bohr
B Dalton
C Rutherford
D Thomson
Your answer
7 Which row describes a formulation?
Description Amount of chemicals
A compound exact
B mixture exact
© OCR 2024 Turn over
, 4
C compound random
D mixture random
Your answer
8 The table shows information about some atoms and ions.
Which two are isotopes?
Atom or ion Number of protons Number of neutrons Number of
electrons
1 17 18 17
2 17 18 18
3 17 20 17
4 18 20 18
A 1 and 2
B 1 and 3
C 2 and 4
D 3 and 4
Your answer [1] 9 Which dot and cross diagram shows the structure of
a fluorine molecule, F2?
A
F
© OCR 2024
