Please check the examination detai ls below before entering your candidate information
-
C.ndidates,mam, 0.hername,
( 1
)
1 1 1 1 1 1[ 1 1 1 1
Centre Number Candidate Number
Pearson Edexcel Levei 1 /Levei 2 GCSE (9-1}
(Tuesday 11 June 2024
Paper
reference 1CH0/2H
Morning (Time: 1 hour 45 mirnutes)
Chemistry CI •
PAPER 2
Higher Tier
ou u st ha e
_ _= ,_
_ _ _m_ _ _ _ v_
_v TotalMarks
]
calculator, ruler, Periodic table (enclosed)
____ _____________
_
lnstructions
• Use blac k ink or ball-point pein.
• Fill i n t he b oxes at the top of this page with your name,
• Answer all questions.
centre number and candidatei number.
• Answer the questions in the s.paces provided
- there may be more space than you need.
• Calculators may be used.
• You must show allyour w orlki ng out with your a nswer clea rly i dentified at the
• Any diagrams may NOT be accurately drawn, unless otherwise indicated.
end of your sol uti on.
lnformation
• The marks for eac h question are shown in brackets
• The total mark for this paper iis 100.
• ln questions marked with an ;"steri sk (*), marks will be awarded for your ability to
- use this as a guide as to how much time to spend on each question.
structure your answer logically, showing how the points that you make are related or
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.
Turnover ►
-
, 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) Concrete is a composite material made of cement, sand and stone.
Different types of concrete are produced by changing the ratio of cement, sand
and stone.
Figure 1 shows some information about three different types of concrete,
A, B and C.
mixing ratio compressive strength
concrete example of use
cement : sand : stone in kPa
A 1:2:4 17 250 fence posts
B 1:2:3 27 600 paving slabs
C 1:2:2 31 050 flooring
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
Figure 1
(i) State how the amount of stone added to the mixture affects the compressive
strength of concrete.
(1)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................................... . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................................... . . . . . . . . . . . . . . . . . . . .
(ii) What mass of stone is in a sample of concrete B containing 5000 kg of sand?
(1)
A 2500 kg
B 5000 kg
C 7500 kg
D 10 000 kg
2
, (iii) Sand contains silicon dioxide.
Figure 2 shows part of the structure of silicon dioxide.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
Key
oxygen atom
silicon atom
Figure 2
State the type of structure and bonding in silicon dioxide.
(1)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
(b) (i) Which statement about nanoparticles is correct?
(1)
A nanoparticles are smaller than atoms and molecules
B nanoparticles are smaller than atoms but larger than molecules
C nanoparticles are larger than atoms but smaller than molecules
D nanoparticles are larger than atoms and molecules
(ii) Some sunscreens contain nanoparticles of titanium dioxide.
Explain why nanoparticles of titanium dioxide are used in some sunscreens.
(2)
DO NOT WRITE IN THIS AREA
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
(Total for Question 1 = 6 marks)
3
Turn over
,
-
C.ndidates,mam, 0.hername,
( 1
)
1 1 1 1 1 1[ 1 1 1 1
Centre Number Candidate Number
Pearson Edexcel Levei 1 /Levei 2 GCSE (9-1}
(Tuesday 11 June 2024
Paper
reference 1CH0/2H
Morning (Time: 1 hour 45 mirnutes)
Chemistry CI •
PAPER 2
Higher Tier
ou u st ha e
_ _= ,_
_ _ _m_ _ _ _ v_
_v TotalMarks
]
calculator, ruler, Periodic table (enclosed)
____ _____________
_
lnstructions
• Use blac k ink or ball-point pein.
• Fill i n t he b oxes at the top of this page with your name,
• Answer all questions.
centre number and candidatei number.
• Answer the questions in the s.paces provided
- there may be more space than you need.
• Calculators may be used.
• You must show allyour w orlki ng out with your a nswer clea rly i dentified at the
• Any diagrams may NOT be accurately drawn, unless otherwise indicated.
end of your sol uti on.
lnformation
• The marks for eac h question are shown in brackets
• The total mark for this paper iis 100.
• ln questions marked with an ;"steri sk (*), marks will be awarded for your ability to
- use this as a guide as to how much time to spend on each question.
structure your answer logically, showing how the points that you make are related or
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.
Turnover ►
-
, 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) Concrete is a composite material made of cement, sand and stone.
Different types of concrete are produced by changing the ratio of cement, sand
and stone.
Figure 1 shows some information about three different types of concrete,
A, B and C.
mixing ratio compressive strength
concrete example of use
cement : sand : stone in kPa
A 1:2:4 17 250 fence posts
B 1:2:3 27 600 paving slabs
C 1:2:2 31 050 flooring
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
Figure 1
(i) State how the amount of stone added to the mixture affects the compressive
strength of concrete.
(1)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................................... . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................................... . . . . . . . . . . . . . . . . . . . .
(ii) What mass of stone is in a sample of concrete B containing 5000 kg of sand?
(1)
A 2500 kg
B 5000 kg
C 7500 kg
D 10 000 kg
2
, (iii) Sand contains silicon dioxide.
Figure 2 shows part of the structure of silicon dioxide.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
Key
oxygen atom
silicon atom
Figure 2
State the type of structure and bonding in silicon dioxide.
(1)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
(b) (i) Which statement about nanoparticles is correct?
(1)
A nanoparticles are smaller than atoms and molecules
B nanoparticles are smaller than atoms but larger than molecules
C nanoparticles are larger than atoms but smaller than molecules
D nanoparticles are larger than atoms and molecules
(ii) Some sunscreens contain nanoparticles of titanium dioxide.
Explain why nanoparticles of titanium dioxide are used in some sunscreens.
(2)
DO NOT WRITE IN THIS AREA
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
(Total for Question 1 = 6 marks)
3
Turn over
,
