To melt a solid or evaporate a liquid you need to:

Break the bonds between particles

The temperature rise of an object when it is heated depends on:

Mass, material and amount of heat energy

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Questions on AQA Unit 5 Thermal Physics and Gas Laws, mainly definitions.

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Answers

1
Choose the words to complete the definition of specific latent heat of vaporization:
Temperature, liquid, vapour
State, liquid, gas
Temperature, liquid, gas
State, liquid, vapour
2
Calculate the energy needed to raise the temperature of 5 kg of water from 20°C to 100°C
4,20x108
4.20x106
1.68x105
1.24x105
3
Which of these is not an assumption made in the kinetic theory?
Particles are perfect spheres
The gas contains a large number of particles
The motion of the particles follows Newton's law
They move randomly and rapidly
4
The Pressure Law states that for a fixed mass of gas at a constant volume:
P1/T1=P2/T2
T1/P1= constant
P1T1=P2T2
T1P1= constant
5
Boyle's law states that for a fixed mass of gas at constant temperature:
P1/P2=V1/V2
P2/P1=V2/V1
V1P2=V2P1
P1V1=P2V2
6
Choose the words from below that complete this definition of specific heat capacity:
Energy, temperature, state
Heat, temperature, state
Heat, kinetic energy, state
Energy, heat, state
7
Which of the following is not true, when the temperature increases:
D
B
A
C
8
To melt a solid or evaporate a liquid you need to:
Separate the molecules
Break the bonds between particles
Excite the particles
Break the bonds within particles
9
The temperature rise of an object when it is heated depends on:
Amount of heat energy and its mass
Material, mass and the specific heat capacity
Mass and material
Mass, material and amount of heat energy
10
What is the unit of specific heat capacity?
J-1kg-1K-1
KJ-1kg-1
Jkg-1K
Jkg-1K-1
11
Charles' Law states that for a fixed mass of gas at constant pressure:
T1=V1
V1/T1=V2/T2
T1/V1= constant
T1/V1=V2/T2
12
Choose the words to complete the definition of pressure:
Force and acceleration
Acceleration and time
Force and area
Force and speed
13
The name of your physics teacher next year is
Mr Jones
Mr Whybrow
Mr Hegarty
Mr Marriott

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