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OCR Higher GCSE Chemistry A Gateway Science J248_03: Paper 3 (Higher Tier) question-paper june 2024 $16.49   Add to cart
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OCR Higher GCSE Chemistry A Gateway Science J248_03: Paper 3 (Higher Tier) question-paper june 2024
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OCR Higher GCSE Chemistry A Gateway Science J248_03: Paper 3 (Higher Tier) question-paper june 2024

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  • November 1, 2024
  • 27
  • 2024/2025
  • Exam (elaborations)
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Oxford Cambridge and RSA
H
Please write clearly in black ink. Do not write in the barcodes.
First name(s)
Last name
Centre number
Candidate number
OCR is an exempt Charity
Turn over
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 28 pages.
ADVICE
· Read each question carefully before you start your answer.
You must have:
· a ruler (cm/mm)
· the Data Sheet for GCSE (9·1) Chemistry A (inside
this document)
You can use:
· a scientific or graphical calculator
· an HB pencil
Friday 17 May 2024 · Morning
GCSE (9·1) Chemistry A (Gateway Science)
J248/03 (Higher Tier)
Time allowed: 1 hour 45 minutes
*
J
2
4
8
0
3
*
*1374577712*
© OCR 2024 [601/8663/X]
DC (CJ/FC) 339903/6

, 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 Which property is characteristic of a metal?

A It forms acidic oxides.

B It is brittle.

C It is malleable.

D It reacts with acid to form carbon dioxide gas.


Your answer [1]


2 Graphite and graphene are allotropes of carbon.

Which statement is correct about graphite and graphene?

A Graphite has delocalised electrons, graphene uses all electrons in bonding.

B Graphite has four bonds from each carbon atom, graphene only has three.

C Graphite is a giant covalent structure, graphene is not.

D Graphite is made up of layers, graphene is a single layer.


Your answer [1]


3 A lithium ion is Li+ and a phosphate ion is PO43 –.

What is the formula of lithium phosphate?

A Li(PO4)3

B Li2PO4

C Li2(PO4)3

D Li3PO4


Your answer [1]




© OCR 2024

, 3
4 Which statement about a reducing agent is correct?

A It oxidises another species and is itself oxidised.

B It oxidises another species and is itself reduced.

C It reduces another species and is itself oxidised.

D It reduces another species and is itself reduced.


Your answer [1]


5 Which statement about alkalis is correct?

A They form H+ ions in solution.

B They have a pH value greater than 7.

C They react with metals to form a salt and hydrogen.

D They turn universal indicator red.


Your answer [1]


6 Which equipment is needed to set up an electrolysis experiment?

A A battery, a beaker, a funnel and wires

B A battery, a beaker, electrodes and wires

C A battery, crocodile clips, electrodes and a thermometer

D A beaker, electrodes, a funnel and a thermometer


Your answer [1]




© OCR 2024 Turn over

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