E75506A
,GCSE CHEMISTRY (9–1): Actual May 2025 PAST PAPER 1: Foundation Tier. All Assessment
Questions & Mark Scheme [Edexcel 1CH0/1F]
Exam Resource Summary
The GCSE Chemistry (9–1) May 2025 Paper 1: Foundation Tier [Edexcel 1CH0/1F] – All
Assessment Questions & Mark Scheme provides the full official examination paper together with its
corresponding mark scheme. This resource evaluates students’ understanding of core chemistry
concepts, including atomic structure, bonding, quantitative chemistry, chemical changes, and energy
changes—presented at a level appropriate for Foundation Tier candidates.
The detailed mark scheme outlines exactly how marks are awarded, clarifying required keywords,
calculation steps, and acceptable scientific reasoning. This makes it an excellent tool for improving exam
technique, identifying common errors, and strengthening understanding of core principles. It is
particularly valuable for students preparing for the May 2026 Edexcel GCSE Chemistry Paper 1
(Foundation Tier), offering clear insight into examiner expectations and strategies for achieving
maximum marks.
Turn over
, Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in a box . If you change your mind about an
DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 A student investigates the reaction that occurs when zinc carbonate is heated.
Figure 1 shows the apparatus the student uses.
G
limewater
zinc
carbonate
DO NOT WRITE IN THIS AREA
heat
Figure 1
(a) What is the name of the piece of apparatus labelled G in Figure 1?
(1)
A testing tube
B heating tube
C delivery tube
D boiling tube
(b) State what apparatus should be used to heat the zinc carbonate in Figure 1.
(1)
DO NOT WRITE IN THIS AREA
............................................................................................................................
2
■■■■
, (c) The word equation for the reaction that occurs when zinc carbonate is heated is
zinc carbonate zinc oxide + carbon dioxide
DO NOT WRITE IN THIS AREA
The carbon dioxide bubbles through the limewater.
State what is seen when carbon dioxide bubbles through the limewater.
(1)
. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. . ......................
(d) Another student investigates the change in mass that takes place when zinc
carbonate is heated.
(i) Figure 2 shows the results the student records at the start of the investigation.
mass of empty test tube 14.62 g
mass of test tube + zinc carbonate 17.83 g
DO NOT WRITE IN THIS AREA
Figure 2
Using the results in Figure 2, calculate the mass of zinc carbonate in the test
tube.
(1)
. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. .. . .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. . . . ......................
mass of zinc carbonate =................................................ g
(ii) The student then
• heats the test tube containing the zinc carbonate for five minutes
• places the hot test tube on a bench mat to cool
• finds the mass of the test tube and contents.
Describe what the student should do next to make sure that all the zinc
DO NOT WRITE IN THIS AREA
carbonate has reacted completely.
(2)
. .. .. ... .. .. ... .. ... .. .. ... .. .. .. . .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. . . . ......................
. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. . . . ......................
. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... . . .. ... .. .. ... .. ... .. .. . ......................
. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. . . .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. . ......................
(Total for Question 1 = 6 marks)
3
■■■■ Turn over
,GCSE CHEMISTRY (9–1): Actual May 2025 PAST PAPER 1: Foundation Tier. All Assessment
Questions & Mark Scheme [Edexcel 1CH0/1F]
Exam Resource Summary
The GCSE Chemistry (9–1) May 2025 Paper 1: Foundation Tier [Edexcel 1CH0/1F] – All
Assessment Questions & Mark Scheme provides the full official examination paper together with its
corresponding mark scheme. This resource evaluates students’ understanding of core chemistry
concepts, including atomic structure, bonding, quantitative chemistry, chemical changes, and energy
changes—presented at a level appropriate for Foundation Tier candidates.
The detailed mark scheme outlines exactly how marks are awarded, clarifying required keywords,
calculation steps, and acceptable scientific reasoning. This makes it an excellent tool for improving exam
technique, identifying common errors, and strengthening understanding of core principles. It is
particularly valuable for students preparing for the May 2026 Edexcel GCSE Chemistry Paper 1
(Foundation Tier), offering clear insight into examiner expectations and strategies for achieving
maximum marks.
Turn over
, Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in a box . If you change your mind about an
DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 A student investigates the reaction that occurs when zinc carbonate is heated.
Figure 1 shows the apparatus the student uses.
G
limewater
zinc
carbonate
DO NOT WRITE IN THIS AREA
heat
Figure 1
(a) What is the name of the piece of apparatus labelled G in Figure 1?
(1)
A testing tube
B heating tube
C delivery tube
D boiling tube
(b) State what apparatus should be used to heat the zinc carbonate in Figure 1.
(1)
DO NOT WRITE IN THIS AREA
............................................................................................................................
2
■■■■
, (c) The word equation for the reaction that occurs when zinc carbonate is heated is
zinc carbonate zinc oxide + carbon dioxide
DO NOT WRITE IN THIS AREA
The carbon dioxide bubbles through the limewater.
State what is seen when carbon dioxide bubbles through the limewater.
(1)
. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. . ......................
(d) Another student investigates the change in mass that takes place when zinc
carbonate is heated.
(i) Figure 2 shows the results the student records at the start of the investigation.
mass of empty test tube 14.62 g
mass of test tube + zinc carbonate 17.83 g
DO NOT WRITE IN THIS AREA
Figure 2
Using the results in Figure 2, calculate the mass of zinc carbonate in the test
tube.
(1)
. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. .. . .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. . . . ......................
mass of zinc carbonate =................................................ g
(ii) The student then
• heats the test tube containing the zinc carbonate for five minutes
• places the hot test tube on a bench mat to cool
• finds the mass of the test tube and contents.
Describe what the student should do next to make sure that all the zinc
DO NOT WRITE IN THIS AREA
carbonate has reacted completely.
(2)
. .. .. ... .. .. ... .. ... .. .. ... .. .. .. . .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. . . . ......................
. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. . . . ......................
. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... . . .. ... .. .. ... .. ... .. .. . ......................
. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. . . .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. . ......................
(Total for Question 1 = 6 marks)
3
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