Oxford Cambridge and RSA
Tuesday 11 June 2024 – Morning
GCSE (9–1) Chemistry A (Gateway Science)
J248/02 (Foundation Tier)
Time allowed: 1 hour 45 minutes
You must have:
• a ruler (cm/mm)
• the Data Sheet for GCSE (9–1) Chemistry A
(inside this document)
F
You can use:
• a scientific or graphical calculator
• an HB pencil
* J 2 4 8 0 2 *
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 usethe 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 begiven
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.
OCR is an exempt Charity
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 What is the test for oxygen gas?
A Burns with a lilac flame
B Burns with a squeaky popC
Relights a glowing splint D
Turns limewater milky
Your answer [1]
2 A student adds sodium hydroxide solution to copper sulfate solution.
What is the colour of the precipitate made?
A Blue
B Green
C Orange-brown
D White
Your answer [1]
3 Which change would decrease the rate of a chemical reaction?
A Adding a catalyst
B Increasing the concentration of the solution
C Increasing the size of the solid pieces
D Increasing the temperature
Your answer [1]
© OCR 2024
, 3
4 What is the major source of oxides of nitrogen in the atmosphere?
A Combustion of impurities in coal
B High temperature reactions in car engines
C Incomplete combustion of fossil fuels
D Industrial processes such as metal extraction
Your answer [1]
5 How many different monomers (nucleotides) is DNA made from?
A 2
B 3
C 4
D 5
Your answer [1]
6 What is the functional group in an alcohol molecule?
A –C–H
B –C=C–
C –COOH
D –O–H
Your answer [1]
7 What is the balanced equation for the reaction of sodium with oxygen?
A Na + O NaO
B Na + O2 NaO2
C 4Na + O2 2Na2O
D Na2 + 2O 2NaO
Your answer [1]
© OCR 2024 Turn over
, 4
8 Which row describes the three halogens at room temperature?
Chlorine Bromine Iodine
A green gas orange-brown gas grey solid
B green gas orange-brown liquid grey solid
C green gas orange-brown liquid purple gas
D green liquid orange-brown liquid grey solid
Your answer [1]
9 The table shows the results of the reactions between four metals and their metal oxides.
Key: ✓ = reaction ✗ = no reaction
Metal W oxide Metal X oxide Metal Y oxide Metal Z oxide
Metal W ✗ ✗ ✗
Metal X ✓ ✓ ✗
Metal Y ✓ ✗ ✗
Metal Z ✓ ✓ ✓
What is the correct order of reactivity of the metals, from the most reactive to the least reactive?
A W, Y, X, Z
B W, Z, Y, X
C Z, X, Y, W
D Z, Y, X, W
Your answer [1]
© OCR 2024
Tuesday 11 June 2024 – Morning
GCSE (9–1) Chemistry A (Gateway Science)
J248/02 (Foundation Tier)
Time allowed: 1 hour 45 minutes
You must have:
• a ruler (cm/mm)
• the Data Sheet for GCSE (9–1) Chemistry A
(inside this document)
F
You can use:
• a scientific or graphical calculator
• an HB pencil
* J 2 4 8 0 2 *
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 usethe 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 begiven
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.
OCR is an exempt Charity
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 What is the test for oxygen gas?
A Burns with a lilac flame
B Burns with a squeaky popC
Relights a glowing splint D
Turns limewater milky
Your answer [1]
2 A student adds sodium hydroxide solution to copper sulfate solution.
What is the colour of the precipitate made?
A Blue
B Green
C Orange-brown
D White
Your answer [1]
3 Which change would decrease the rate of a chemical reaction?
A Adding a catalyst
B Increasing the concentration of the solution
C Increasing the size of the solid pieces
D Increasing the temperature
Your answer [1]
© OCR 2024
, 3
4 What is the major source of oxides of nitrogen in the atmosphere?
A Combustion of impurities in coal
B High temperature reactions in car engines
C Incomplete combustion of fossil fuels
D Industrial processes such as metal extraction
Your answer [1]
5 How many different monomers (nucleotides) is DNA made from?
A 2
B 3
C 4
D 5
Your answer [1]
6 What is the functional group in an alcohol molecule?
A –C–H
B –C=C–
C –COOH
D –O–H
Your answer [1]
7 What is the balanced equation for the reaction of sodium with oxygen?
A Na + O NaO
B Na + O2 NaO2
C 4Na + O2 2Na2O
D Na2 + 2O 2NaO
Your answer [1]
© OCR 2024 Turn over
, 4
8 Which row describes the three halogens at room temperature?
Chlorine Bromine Iodine
A green gas orange-brown gas grey solid
B green gas orange-brown liquid grey solid
C green gas orange-brown liquid purple gas
D green liquid orange-brown liquid grey solid
Your answer [1]
9 The table shows the results of the reactions between four metals and their metal oxides.
Key: ✓ = reaction ✗ = no reaction
Metal W oxide Metal X oxide Metal Y oxide Metal Z oxide
Metal W ✗ ✗ ✗
Metal X ✓ ✓ ✗
Metal Y ✓ ✗ ✗
Metal Z ✓ ✓ ✓
What is the correct order of reactivity of the metals, from the most reactive to the least reactive?
A W, Y, X, Z
B W, Z, Y, X
C Z, X, Y, W
D Z, Y, X, W
Your answer [1]
© OCR 2024
