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P6 Molecules and Matter
1.
Which of the following gives the density of a material?
a) mass / volume
b) volume / mass
c) weight / volume
d) mass / area
2.
Which of the following is a unit of density?
a) kg/m
2
b) kg/m
3
c) N/m
3
d) m/kg
3
3.
What is the density of a material of mass 5 kg with a volume of 0.25 m
3
in standard units.
a) 20
b) 5.25
c) 1.25
d) 12.5
4.
What would be the volume of 40 g of a material with a density of 5 g/cm
3
a) 125 cm
3
b) 0.125 cm
3
c) 8 cm
3
d) 200 cm
3
5.
What would be the mass of 200 cm
3
of a material with a density of 4 g/cm
3
a) 80 g
b) 800 kg
c) 8 g
d) 0.8 kg
6.
Which of these diagrams shows the particles in a gas?
a) A
b) B
c) C
d) D
7.
Which of these diagrams shows the particles in a solid?
a) A
b) B
c) C
d) D
8.
Which of these diagrams shows the particles in a liquid?
a) A
b) B
c) C
d) D
9.
If the particles of a material become more closely packed which of the following quantities will be increased?
a) mass
b) density
c) temperature
d) volume
10.
Which of the following gives the order of increasing density for most materials, but not for water?
a) liquid, solid, gas
b) gas, liquid, solid
c) solid, liquid, gas
d) solid, gas, liquid
11.
Which two factors relating to particles affect the density of a material?
a) speed and shape
b) size and speed
c) packing and colour
d) mass and packing
12.
What quantity is conserved during the change of state of a material?
a) volume
b) density
c) mass
d) internal energy
13.
Physical changes such as a change of state differ from a chemical change in that they are always ……
a) efficient
b) rapid
c) reversible
d) ireversible
14.
Which of the following is not a change of state?
a) oxidation
b) melting
c) freezing
d) boiling
15.
Which of the following is not a change of state?
a) combustion
b) evaporating
c) condensing
d) sublimating
16.
What name is given to the process of a material changing from a solid to a gas?
a) elongation
b) condensation
c) sublimation
d) oxidation
17.
What name is given to the process of a material changing from a gas to a liquid?
a) evaporation
b) condensation
c) cooling
d) distillation
18.
What term is used to mean the energy stored by the particles in a material?
a) internal energy
b) total energy
c) dark energy
d) particle energy
19.
Which two types of particle energy make up the energy stored in a material?
a) thermal and kinetic
b) heat and light
c) potential and thermal
d) kinetic and potential
20.
Which of the following processes increases the internal energy in a material?
a) cooling
b) accelerating
c) heating
d) condensing
21.
When a material is heated one of two things must happen. Which of these are those two things?
a) A temperature increase or a change of state
b) Melting or boiling
c) Heating or cooling
d) Heating or combustion
22.
What quantities must be multiplied together to give the change in thermal energy of a material?
a) specific heat capacity and temperature change
b) mass, specific heat capacity and temperature
c) mass, specific heat capacity and temperature change
d) mass and temperature change
23.
What name is given to the amount of energy needed to heat up 1 kg of a material by 1
o
C ?
a) heat capacity
b) specific heat capacity
c) specific capacity
d) specific heat
24.
Calculate the energy change if 2kg of water with SHC = 4200 J/kg
o
C is heated by 15
o
C
a) 126 kJ
b) 12.6 kJ
c) 126 J
d) 12.6 J
25.
Calculate the energy change if 2kg of copper with SHC = 800 J/kg
o
C is heated by 65
o
C
a) 10.4 kJ
b) 104 J
c) 104 kJ
d) 10.4 J
26.
It takes 200,000 J to heat 5kg of a material by 50
o
C. Calculate the SHC.
a) 8 J/kg
o
C
b) 80 J/kg
o
C
c) 8000 J/kg
o
C
d) 800 J/kg
o
C
27.
What term is used to refer to the energy needed to change the state of a material?
a) latent energy
b) internal energy
c) internal heat
d) latent heat
28.
When a material is changing state which of the following does not change?
a) internal energy
b) density
c) temperature
d) particle arrangement
29.
What pair of quantities are multiplied together to give the energy change during a change of state?
a) mass and specific heat capacity
b) mass and specific latent heat
c) temperature change and specific latent heat
d) mass and temperature
30.
What change is associated with specific latent heat of fusion?
a) small to large nuclei
b) solid to liquid
c) liquid to gas
d) solid to water
31.
Which of these is not associated with specific latent heat of evaporation?
a) liquid to vapour
b) vapour to liquid
c) sublimation
d) condensation
32.
On a graph of temperature against time for a cooling material the rate of cooling …..
a) decreases as the temperature decreases.
b) decreases as the temperature increases.
c) increases as the temperature decreases.
d) remains constant giving a straight line.
33.
On a graph of temperature against time for a cooling material that changes from a liquid to a solid …
a) the temperature increases during the change of state.
b) the temperature remains constant during the change of state
c) the temperature falls rapidly during the change of state.
d) the cooling continues unaffected by the change of state.
34.
Specific heat capacity is used to calculate the energy change when a material changes …
a) density
b) state
c) temperature
d) shape
35.
Specific latent heat is used to calculate the energy change when a material changes …
a) temperature
b) state
c) density
d) volume
36.
Which word best describes the speed and direction (velocity) of the motion of the particles in a gas?
a) steady
b) similar
c) constant
d) random
37.
Which of the following is related to the average kinetic energy of the particles in a gas?
a) volume
b) pressure
c) temperature
d) state
38.
If the temperature of a sample of gas is increased whilst the volume is kept the same then …
a) the pressure decreases.
b) the pressure remains constant.
c) the pressure is lost.
d) the pressure increases.
39.
The higher the temperature of a gas the……
a) faster its particles.
b) slower its particles.
c) closer its particles.
d) more spread out its particles
40.
The higher the pressure of a gas the……
a) faster its particles.
b) closer its particles.
c) more spread out its particles
d) slower its particles.
41.
If a gas is allowed to expand then the ….
a) pressure will increase.
b) volume will decrease.
c) the temperature will increase.
d) pressure will fall.
42.
The pressure of a gas produces a ___________ on the walls of its container.
a) temperature change
b) chemical change
c) force
d) energy change
43.
For a sample of gas, in a sealed container, which quantities, when multiplied together, always give the same constant value?
a) temperature and pressure
b) volume and temperature
c) pressure, volume and temperature
d) pressure and volume
44.
If the volume of a sample of gas is halved what will happen to its pressure? (As long as there is no temperature change.)
a) It will double
b) It will half
c) It will not change
d) It will quadruple
45.
If the pressure of a sample of gas is halved what will happen to its volume? (As long as there is no temperature change.)
a) It will half
b) It will double
c) It will not change
d) It will quadruple
46.
A sample of gas had a pressure of 200 Pa and a volume of 2 m
3
. The pressure is increased to 1000 Pa. What is the new volume? (Assume no temperature change.)
a) 0.4 m
3
b) 0.8 m
3
c) 10 m
3
d) 4 m
3
47.
A sample of gas had a pressure of 4 Pa and a volume of 8 m
3
. The volume is decreased to 0.5 m
3
. What is the new pressure? (Assume no temperature change.)
a) 128 Pa
b) 0.0625 Pa
c) 62.5 Pa
d) 64 Pa
48.
Which of the following is the best definition of work?
a) The transfer of energy by heating.
b) The transfer of energy by friction.
c) The transfer of energy by a force.
d) The transfer of energy by a change of state.
49.
If work is done of a gas, what quantity always increases?
a) temperature
b) volume
c) internal energy
d) specific heat capacity
50.
If a gas is compressed as in a bicycle pump, the work done on the gas leads which quantity to increase?
a) volume
b) mass
c) latent heat
d) temperature
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