QP 2H
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
GCSE
COMBINED SCIENCE: TRILOGY
Higher Tier
H
Chemistry Paper 2H
Time allowed: 1 hour 15 minutes
Materials
For Examiner’s Use
For this paper you must have:
a ruler Question Mark
a scientific calculator
1
the periodic table (enclosed).
2
Instructions 3
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.
Answer all questions in the spaces provided. 6
If you need extra space for your answer(s), use the lined pages at the end of TOTAL
this book. Write the question number against your answer(s).
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.
*jun21 464c2h01*
IB/M/Jun21/E7 8464/C/2H
, 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/Jun21/8464/C/2H
, 3
0 1 A student investigated the reaction between magnesium and
excess hydrochloric acid.
Figure 1 shows the apparatus.
Figure 1
This is the method used.
1. Pour 50 cm3 of hydrochloric acid into a conical flask.
2. Add a piece of magnesium.
3. Insert stopper and delivery tube and start a timer.
4. Collect the gas produced in a gas syringe.
5. Record the volume of gas produced every 20 seconds for 2 minutes.
6. Repeat steps 1 to 5 with higher concentrations of hydrochloric acid.
0 1
.1 Give the independent variable and one control variable in this investigation.
[2 marks]
Independent variable
Control variable
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun21/8464/C/2H
, 4
Do not write
outside the
Table 1 shows the results from the first experiment using hydrochloric acid with a box
low concentration.
Table 1
Time in seconds 0 20 40 60 80 100 120
Volume of gas in cm3 0 48 72 90 97 98 98
. Complete Figure 2.
You should:
plot the data from Table 1 (the point 0,0 has been plotted for you)
draw a line of best fit.
[3 marks]
Figure 2
*04*
IB/M/Jun21/8464/C/2H
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
GCSE
COMBINED SCIENCE: TRILOGY
Higher Tier
H
Chemistry Paper 2H
Time allowed: 1 hour 15 minutes
Materials
For Examiner’s Use
For this paper you must have:
a ruler Question Mark
a scientific calculator
1
the periodic table (enclosed).
2
Instructions 3
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.
Answer all questions in the spaces provided. 6
If you need extra space for your answer(s), use the lined pages at the end of TOTAL
this book. Write the question number against your answer(s).
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.
*jun21 464c2h01*
IB/M/Jun21/E7 8464/C/2H
, 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/Jun21/8464/C/2H
, 3
0 1 A student investigated the reaction between magnesium and
excess hydrochloric acid.
Figure 1 shows the apparatus.
Figure 1
This is the method used.
1. Pour 50 cm3 of hydrochloric acid into a conical flask.
2. Add a piece of magnesium.
3. Insert stopper and delivery tube and start a timer.
4. Collect the gas produced in a gas syringe.
5. Record the volume of gas produced every 20 seconds for 2 minutes.
6. Repeat steps 1 to 5 with higher concentrations of hydrochloric acid.
0 1
.1 Give the independent variable and one control variable in this investigation.
[2 marks]
Independent variable
Control variable
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun21/8464/C/2H
, 4
Do not write
outside the
Table 1 shows the results from the first experiment using hydrochloric acid with a box
low concentration.
Table 1
Time in seconds 0 20 40 60 80 100 120
Volume of gas in cm3 0 48 72 90 97 98 98
. Complete Figure 2.
You should:
plot the data from Table 1 (the point 0,0 has been plotted for you)
draw a line of best fit.
[3 marks]
Figure 2
*04*
IB/M/Jun21/8464/C/2H
