Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
H
GCSE
COMBINED SCIENCE: TRILOGY
Higher Tier
Chemistry Paper 1H
Monday 19 May 2025 Morning Time allowed: 1 hour 15 minutes
Materials For Examiner’s Use
For this paper you must have:
Question Mark
• a ruler
• a scientific calculator 1
• the periodic table (enclosed). 2
3
Instructions
• Use black ink or black ball-point pen. 4
• Pencil should only be used for drawing. 5
• Fill in the boxes at the top of this page. 6
• Answer all questions in the spaces provided.
7
• If you need extra space for your answer(s), use the lined pages at the end of
this book. Write the question number against your answer(s). TOTAL
• Do all rough work in this book. Cross through any work you do not want to be
marked.
• In all calculations, show clearly how you work out your answer.
Information
• The maximum mark for this paper is 70.
• The marks for questions are shown in brackets.
• You are expected to use a calculator where appropriate.
• You are reminded of the need for good English and clear presentation in your answers.
*JUN258464C1H01*
IB/M/Jun25/G4007/E8 8464/C/1H
, 2
Do not write
outside the
There are no questions printed on this page box
DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED
*02*
IB/M/Jun25/8464/C/1H
, 3
Do not write
outside the
0 1 A teacher demonstrated the electrolysis of copper chloride solution. box
Figure 1 shows the apparatus.
Figure 1
The teacher measured the mass of the negative electrode every 60 seconds.
0 1 . 1 Chlorine gas is given off during the electrolysis of copper chloride solution.
Chlorine gas is poisonous.
Give one way of reducing the risk of harm.
[1 mark]
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun25/8464/C/1H
, 4
Do not write
outside the
Table 1 shows the results. box
Table 1
Time Mass of negative
in seconds electrode in grams
0 20.2
60 22.0
120 23.4
180 24.2
240 24.8
300 25.2
360 25.2
0 1 . 2 Plot the data from Table 1 on Figure 2.
Draw a line of best fit.
The first point has been plotted for you.
[3 marks]
Figure 2
*04*
IB/M/Jun25/8464/C/1H
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
H
GCSE
COMBINED SCIENCE: TRILOGY
Higher Tier
Chemistry Paper 1H
Monday 19 May 2025 Morning Time allowed: 1 hour 15 minutes
Materials For Examiner’s Use
For this paper you must have:
Question Mark
• a ruler
• a scientific calculator 1
• the periodic table (enclosed). 2
3
Instructions
• Use black ink or black ball-point pen. 4
• Pencil should only be used for drawing. 5
• Fill in the boxes at the top of this page. 6
• Answer all questions in the spaces provided.
7
• If you need extra space for your answer(s), use the lined pages at the end of
this book. Write the question number against your answer(s). TOTAL
• Do all rough work in this book. Cross through any work you do not want to be
marked.
• In all calculations, show clearly how you work out your answer.
Information
• The maximum mark for this paper is 70.
• The marks for questions are shown in brackets.
• You are expected to use a calculator where appropriate.
• You are reminded of the need for good English and clear presentation in your answers.
*JUN258464C1H01*
IB/M/Jun25/G4007/E8 8464/C/1H
, 2
Do not write
outside the
There are no questions printed on this page box
DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED
*02*
IB/M/Jun25/8464/C/1H
, 3
Do not write
outside the
0 1 A teacher demonstrated the electrolysis of copper chloride solution. box
Figure 1 shows the apparatus.
Figure 1
The teacher measured the mass of the negative electrode every 60 seconds.
0 1 . 1 Chlorine gas is given off during the electrolysis of copper chloride solution.
Chlorine gas is poisonous.
Give one way of reducing the risk of harm.
[1 mark]
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun25/8464/C/1H
, 4
Do not write
outside the
Table 1 shows the results. box
Table 1
Time Mass of negative
in seconds electrode in grams
0 20.2
60 22.0
120 23.4
180 24.2
240 24.8
300 25.2
360 25.2
0 1 . 2 Plot the data from Table 1 on Figure 2.
Draw a line of best fit.
The first point has been plotted for you.
[3 marks]
Figure 2
*04*
IB/M/Jun25/8464/C/1H
