Exam (elaborations)
OCR GCSE JUNE 2024 CHEMISTRY B FOUNDATION TIER PAPER J258 PAPER 1
OCR GCSE JUNE 2024 CHEMISTRY B FOUNDATION TIER PAPER J258 PAPER 1
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Oxford Cambridge and RSAFriday 17 May 2024 – 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 3 7 6 4 1 0 7 0 3 *
• a ruler (cm/mm)
• the Data Sheet for GCSE (9–1) Chemistry B
(inside this document)
You can use:
• an HB pencil
• a scientific or graphical calculator
* 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 28 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2024 [601/8605/7] OCR is an exempt Charity
DC (WW/SG) 342103/5 Turn over
, 2
1 Fuels such as diesel and petrol are made from hydrocarbons.
(a)
(i) Hydrocarbons are made from carbon and one other element.
What is the other element?
Put a ring around the correct option.
Chlorine Hydrogen Nitrogen Oxygen
[1]
(ii) What is the main source of hydrocarbons?
..................................................................................................................................................... [1]
(b) Alkanes are hydrocarbons.
Which compound is an alkane?
Tick (✓) one box.
Butanoic acid
Ethanol
Methane
Propene
[1]
(c) Alkenes are also hydrocarbons. They can be used to make polymers.
Which statements about polymers are true and which are false?
Tick (✓) one box in each row.
True False
All polymers are made from alkenes.
Polymers are long chain molecules.
Polymers can be synthetic or naturally occurring.
[2]
© OCR 2024
, 3
(d) Ethene is the monomer used to make a polymer called poly(ethene).
Fig. 1.1 shows the structure of ethene.
Fig. 1.1
H H
C C
H H
(i) Complete the diagram below to show the repeating unit of poly(ethene).
C C
[2]
(ii) Describe what happens when ethene monomers react together to form poly(ethene).
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..................................................................................................................................................... [2]
© OCR 2024 Turn over
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