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- 1. Fill in the Blank
Specific latent heat is the amount of energy required to change the state of 1 kg of a substance without changing its ___________.
- 2. Multiple Choice
Select the state changes that latent heat of fusion applies to.
melting
evaporating
freezing
condensing
sublimation
- 3. Multiple Choice
Select the state changes that latent heat of vaporisation applies to.
melting
evaporating
freezing
condensing
sublimation
- 4. Multiple Choice
Select the correct equations.
thermal energy = specific latent heat / mass
thermal energy = specific latent heat x mass
mass = specific latent heat / thermal energy
specific latent heat = thermal energy / mass
mass = specific latent heat x thermal energy
- 5. Multiple Choice
The diagram shows a heating curve for ice. Which line represents the ice melting?
A
B
C
D
E
- 6. Multiple Choice
Why are lines B and D flat?
The ice is melting
The ice is freezing
All of the thermal energy is used to break the bonds
They stopped the stopwatch
They stopped heating the ice.
- 7. Multiple Choice
The diagram shows a heating curve for ice. Which line represents the ice in a liquid state (water)?
A
B
C
D
E
- 8. Multiple Choice
The diagram shows a cooling curve for ice. Which line represents the ice in a liquid state (water)?
A
B
C
D
E
- 9. Multiple Choice
The diagram shows a cooling curve for ice. Which line represents the ice freezing?
A
B
C
D
E
- 10. Multiple Choice
The diagram shows a cooling curve for ice. Which line represents the ice in a solid form?
A
B
C
D
E
- 11. Fill in the Blank
Specific heat capacity is the amount of energy required to increase the temperature of 1 kg of a substance by 1°C without changing its _____.
- 12. Multiple Choice
The unit of specific heat capacity is J/kg°C.
True
False
- 13. Fill in the Blank
The specific heat capacity of water is 4200 J/kg°C. How much energy is needed to raise the temperature of 1 kg of water by 1°C?
- 14. Fill in the Blank
The specific heat capacity of water is 4200 J/kg°C. How much energy is needed to raise the temperature of 2 kg of water by 1°C?
- 15. Fill in the Blank
The specific heat capacity of water is 4200 J/kg°C. How much energy is needed to raise the temperature of 0.5 kg of water by 1°C?
- 16. Fill in the Blank
The specific heat capacity of water is 4200 J/kg°C. How much energy is needed to raise the temperature of 2 kg of water by 2°C?
- 17. Multiple Choice
Which of these substances is the best conductor of heat?
Water (s.h.c = 4200 J/kg°C)
Copper (s.h.c = 390 J/kg°C)
Mercury (s.h.c = 139 J/kg°C)
Air (s.h.c = 718 J/kg°C)
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