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#O C R GCSE (9–1) Chemistry A (Gateway Science) J248/01 Paper 1 (Foundation Tier) May 2023
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#O C R GCSE (9–1) Chemistry A (Gateway Science) J248/01 Paper 1 (Foundation Tier) May 2023
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#O C RGCSE (9–1) Chemistry A (Gateway Science)
J248/01 Paper 1 (Foundation Tier)
May 2023
You must have:
a ruler (cm/mm)
the Data Sheet for GCSE (9–1) Chemistry A (inside this
F
document)
Time allowed: 1 hour 45 minutes
You can use:
a scientific or graphical calculator
an HB pencil
*
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 the 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.
2023 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 Where is most of the mass found in an atom?
A Electrons
B Neutrons
C Nucleus
D Protons
Your answer [1]
2 Sodium fluoride has the formula NaF. The formula of the sodium ion is Na+.
What is the formula of the fluoride ion?
A F+
B F–
C F2+
D F2–
Your answer [1]
3 Which row of results shows that the pH of a solution is acidic?
pH Universal indicator colour
A 3 orange
B 10 blue
C 3 blue
D 10 orange
Your answer [1]
© OCR 2023
, 3
4 Thomson discovered the first sub-atomic particle.
Which sub-atomic particle did Thomson discover?
A Atom
B Electron
C Neutron
D Proton
Your answer [1]
5 What is the relative formula mass of iron chloride, FeCl
3? Relative atomic mass (Ar): Cl = 35.5 Fe = 55.8.
A 91.3
B 126.8
C 162.3
D 202.9
Your answer [1]
6 An element gains electrons to form a full outer shell.
Which part of the Periodic Table will the element be from?
C
D
A
B
Your answer [1]
© OCR 2023 Turn over
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