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1.1 Solids, Liquids & Gases
Question Paper
Course
CIE IGCSE Chemistry
Section
1. States of Matter
Topic
1.1 Solids, Liquids & Gases
Difficulty
Easy
Time allowed:
60
Score:
/42
Percentage:
/100
Page 1 of 10
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Question 1a
Separate: Chemistry and Extended Only
The following table gives information about six substances.
Which substance could have a macromolecular structure, similar to that of silicon(IV) oxide?
[1 mark]
Question 1b
Which substances are solids at room temperature?
[1 mark]
Question 1c
Extended Only
Which substance could be a metal?
[1 mark]
Question 1d
Extended Only
Which substance could be aqueous sodium chloride?
[1 mark]
Page 2 of 10
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Question 1e
Extended Only
Which substance is an ionic compound?
[1 mark]
Question 1f
Which substances are liquids at room temperature?
[1 mark]
Question 2a
Extended Only
Explain each of the following in terms of the kinetic particle theory.
The rate of most reactions increases at higher temperatures.
[3 marks]
Question 2b
A liquid has a fixed volume but takes up the shape of the container. A gas takes up the shape of the container but it does not
have a fixed volume.
[3 marks]
Page 3 of 10
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Question 3
The table shows the melting points, boiling points and electrical properties of the six substances A to F.
substance
melting point / oC
boiling point / oC
electrical conductor
at room
temperature
A
B
C
D
E
F
961
113
0
803
-5 to-1
-8
2193
444
100
1465
102-105
-6
good
does not conduct
very poor
does not conduct
good
does not conduct
i)
Which three substances are solids at room temperature?
ii)
Which one is an ionic compound?
electrical
conductor of
substance
dissolved in water
does not dissolve
does not dissolve
very poor
good
good
does not dissolve
[1]
[1]
iii)
Which one is a gas at room temperature?
[1]
iv)
Which two substances are liquids at room temperature?
[1]
v)
Which one substance is a metal?
[1]
vi)
Which one is an impure substance?
[1]
[6 marks]
Page 4 of 10
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Question 4a
Give the name of the process that occurs when a gas turns into a liquid.
[1 mark]
Question 4b
Give the name of the process that occurs when a solid turns into a gas without first forming a liquid.
[1 mark]
Page 5 of 10
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Question 4c
Figure 1.2 shows a coloured crystal of cobalt(II) chloride is placed at the bottom of a beaker containing water.
After two days, the colour has spread throughout the water.
Figure 1.2
Explain these observations.
[3 marks]
Question 5a
Complete Table 1.1 about solids, liquids and gases.
Table 1.1
solid
liquid
gas
particle separation
some touching
apart
particle arrangement
regular
random
type of motion
vibrate only
random
[3 marks]
Page 6 of 10
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Question 5b
Extended Only
The graph shows the change in temperature as a sample of a gas is cooled.
Name the change of state taking place between A and B.
[1 mark]
Question 5c
A bottle of liquid perfume is left open at the front of a room.
After some time, the perfume is smelt at the back of the room.
Name the two physical processes taking place.
[2 marks]
Question 6a
This question is about bromine and compounds of bromine.
Use the kinetic particle model to describe the arrangement and type of motion of the molecules in:
Liquid bromine:
Bromine gas:
[4 marks]
Page 7 of 10
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Question 6b
The graph shows how the volume of bromine gas changes with temperature. The pressure is kept constant.
Describe how the volume of the bromine gas changes with temperature.
[1 mark]
Question 6c
Calcium melts at 839 °C and boils at 1484 °C.
What is the physical state of calcium at 1600 °C?
[1 mark]
Question 7a
This question is about chlorine and compounds of chlorine.
Use the kinetic particle model to describe the arrangement and type of motion of the molecules in:
Solid chlorine:
Chlorine gas:
[4 marks]
Page 8 of 10
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Question 7b
The graph shows how the pressure of chlorine gas changes when temperature increases. The volume is kept constant.
Describe how the pressure of the chlorine gas changes with temperature.
[1 mark]
Page 9 of 10
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Question 7c
The structure of compound S is shown.
The melting point of pure S is 159 °C.
The boiling point of pure S is 200 °C.
What is the physical state of pure S at 100 °C?
Explain your answer.
[2 marks]
Page 10 of 10
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