Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 1/Level 2 GCSE (9–1)
Friday 13 June 2025
Morning (Time: 1 hour 10 minutes)Paper
reference 1SC0/2CH
Combined Science
PAPER 5
Higher Tier
You must have: Total Marks
Calculator, ruler, Periodic Table (enclosed)
Instructions
Information
•• The total mark for this paper is 60.The marks for – use this as a guide as
to how much time to spend on each questioneach question are shown in brackets
.
• structure your answer logically, showing how the points that you
make are related or In questions marked with an asterisk (*), marks
will be awarded for your ability to follow on from each other where
appropriate.
Advice
••• Read each question carefully before you start to answer
it.Try to answer every question.Check your answers if you have time at
the end.
, Turn over
P75517RRA ©2025 Pearson Education Ltd.
Y:1/1/1/1/1/1
*P75517RRA0120*
2
, Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in .aIfbox
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 When solutionsP andQ are mixed together, a purple mixture forms.
This mixture slowly becomes colourless.
253 of solution
(a) A student pours cm P into a conical flask and then adds
25cm3 of solution
Q.
The student uses a beaker to measure out these volumes.
Name a piece of apparatus that could be used to measure these volumes
more accurately.
(1)
....................................................................................................................................................................................................................................................................................
(b) The student investigates this reaction using the apparatus shown in Figure 1.
The student measures the time taken for the cross to become visible.
DO NOT WRITE IN THIS AREA
The experiment is repeated at different temperatures.
eye
reaction mixture
paper with black cross
Figure 1
Figure 2 shows the results.
temperature in °C time in s
DO NOT WRITE IN THIS AREA
20 45
40 19
60 10
Figure 2
3
Turn over
, *P75517RRA0220*
4
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 1/Level 2 GCSE (9–1)
Friday 13 June 2025
Morning (Time: 1 hour 10 minutes)Paper
reference 1SC0/2CH
Combined Science
PAPER 5
Higher Tier
You must have: Total Marks
Calculator, ruler, Periodic Table (enclosed)
Instructions
Information
•• The total mark for this paper is 60.The marks for – use this as a guide as
to how much time to spend on each questioneach question are shown in brackets
.
• structure your answer logically, showing how the points that you
make are related or In questions marked with an asterisk (*), marks
will be awarded for your ability to follow on from each other where
appropriate.
Advice
••• Read each question carefully before you start to answer
it.Try to answer every question.Check your answers if you have time at
the end.
, Turn over
P75517RRA ©2025 Pearson Education Ltd.
Y:1/1/1/1/1/1
*P75517RRA0120*
2
, Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in .aIfbox
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 When solutionsP andQ are mixed together, a purple mixture forms.
This mixture slowly becomes colourless.
253 of solution
(a) A student pours cm P into a conical flask and then adds
25cm3 of solution
Q.
The student uses a beaker to measure out these volumes.
Name a piece of apparatus that could be used to measure these volumes
more accurately.
(1)
....................................................................................................................................................................................................................................................................................
(b) The student investigates this reaction using the apparatus shown in Figure 1.
The student measures the time taken for the cross to become visible.
DO NOT WRITE IN THIS AREA
The experiment is repeated at different temperatures.
eye
reaction mixture
paper with black cross
Figure 1
Figure 2 shows the results.
temperature in °C time in s
DO NOT WRITE IN THIS AREA
20 45
40 19
60 10
Figure 2
3
Turn over
, *P75517RRA0220*
4
