#O C R
GCSE (9–1) Chemistry B (Twenty First Century Science)
J258/04 Depth in Chemistry (Higher Tier)
June 2023
Time allowed: 1 hour 45 minutes
You must have:
a ruler (cm/mm)
the Data Sheet for GCSE (9–1) Chemistry B (inside this
document)
H
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 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 24 pages.
ADVICE
• Read each question carefully before you start your answer.
2023 Turn over
, 2
1 Scientists use models to represent atoms. These models have changed over time.
Dalton’s model and a modern model of an atom are shown in the diagrams.
Solid sphere
Dalton’s model Modern model
(a) Give two differences between the modern model and Dalton’s model.
(d) Put the particles in order from largest to smallest.
Atom Electron Molecule of oxygen Polymer Proton
Largest ................................
................................
................................
................................
Smallest ................................
[2]
2023 Turn over
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