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 45 minutes) Paper
reference 1CH0/2H
Chemistry
PAPER 2
Higher Tier
You must have: Total Marks
Calculator, ruler, Periodic Table (enclosed)
, 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 DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 (a) A student carries out a flame test on a salt.
The student observes a yellow flame.
Which ion is in the salt?
(1)
A Ca2+
B Cu2+
C Na+
D Li+
(b) A molecule of a yellow substance is shown in Figure 1.
CH3
O2N C NO2
C C
C C
H C H
NO2
Figure 1
(i) What is the formula of this molecule?
(1)
A C6H5(NO2)3
B C6H2(CH3)(3NO2)
C C7H5N3O6
D C7H6N3O6
2
*P75509RRRA0232*
, (ii) A bottle of this substance is labelled with the hazard symbol in Figure 2.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
Figure 2
State the danger associated with the contents of this bottle.
(1)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
(c) Yellow bananas emit ethene gas, C2H4 .
Draw one molecule of ethene, showing all covalent bonds.
(2)
(d) Gold has a yellow colour.
A gold nanosphere has a surface area of 305 nm2.
The surface area to volume ratio is 1 : 4.60.
Calculate the volume, in nm3, of the gold nanosphere.
(1)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
volume = ..................................................... . . . . . . . . . nm3
(Total for Question 1 = 6 marks)
3
*P75509RRRA0332* Turn over
, 2 When solutions P and Q are mixed together, a purple mixture forms.
This mixture slowly becomes colourless.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
(a) A student pours 25 cm3 of solution P into a conical flask and then adds
25 cm3 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 3.
The student measures the time taken for the cross to become visible.
The experiment is repeated at different temperatures.
eye
reaction mixture
paper with black cross
Figure 3
Figure 4 shows the results.
temperature in °C time in s
20 45
40 19
60 10
Figure 4
4
*P75509RRRA0432*
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 45 minutes) Paper
reference 1CH0/2H
Chemistry
PAPER 2
Higher Tier
You must have: Total Marks
Calculator, ruler, Periodic Table (enclosed)
, 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 DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 (a) A student carries out a flame test on a salt.
The student observes a yellow flame.
Which ion is in the salt?
(1)
A Ca2+
B Cu2+
C Na+
D Li+
(b) A molecule of a yellow substance is shown in Figure 1.
CH3
O2N C NO2
C C
C C
H C H
NO2
Figure 1
(i) What is the formula of this molecule?
(1)
A C6H5(NO2)3
B C6H2(CH3)(3NO2)
C C7H5N3O6
D C7H6N3O6
2
*P75509RRRA0232*
, (ii) A bottle of this substance is labelled with the hazard symbol in Figure 2.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
Figure 2
State the danger associated with the contents of this bottle.
(1)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
(c) Yellow bananas emit ethene gas, C2H4 .
Draw one molecule of ethene, showing all covalent bonds.
(2)
(d) Gold has a yellow colour.
A gold nanosphere has a surface area of 305 nm2.
The surface area to volume ratio is 1 : 4.60.
Calculate the volume, in nm3, of the gold nanosphere.
(1)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
volume = ..................................................... . . . . . . . . . nm3
(Total for Question 1 = 6 marks)
3
*P75509RRRA0332* Turn over
, 2 When solutions P and Q are mixed together, a purple mixture forms.
This mixture slowly becomes colourless.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
(a) A student pours 25 cm3 of solution P into a conical flask and then adds
25 cm3 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 3.
The student measures the time taken for the cross to become visible.
The experiment is repeated at different temperatures.
eye
reaction mixture
paper with black cross
Figure 3
Figure 4 shows the results.
temperature in °C time in s
20 45
40 19
60 10
Figure 4
4
*P75509RRRA0432*
