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- 1. Multiple Choice
There are four main processes in changing of phase, and they are
Melting
Boiling
Condensation
All the above
- 2. Multiple Choice
The heat absorbed by melting a solid is known as
latent heat of fusion
latent heat of solid
latent heat of liquid
latent heat of vaporisation
- 3. Multiple Choice
the symbol for specific latent heat is
c
Q
m
- 4. Multiple Choice
What is the formula to calculate specific latent heat of vaporisation?
c = E/(mΔƟ)
E = mcΔƟ
- 5. Multiple ChoiceNo more energy can be removed from matter at:its freezing point0°Cabsolute zero273 K
- 6. Multiple ChoiceHeat transfer occurs:in many directionsboth from warm objects to colder ones and from cold objects to warmer onesonly from warm objects to colder onesonly from cold objects to warmer ones
- 7. Multiple ChoiceA measure of the average kinetic energy of the individual particles in an object is called:thermal energyconductionconvectiontemperature
- 8. Multiple ChoiceEnergy that moves particles of matter istemperaturethermal energyheatfriction
- 9. Multiple ChoiceThe temperature of a substance increases as___.the substance expandsthe average kinetic energy of its particles increasesthe substance's volume increasesthe substance's mass increases
- 10. Multiple Choice
if 334000 J of heat is required to change state of 1 kg of ice into water then heat of fusion is
668000 J/kg
334000 kg
334000 J/kg
668000 J
- 11. Multiple Choice
if heat of fusion for copper is 689000 J/kg then amount of heat required to melt 2 kg of copper is
1378000 J
1378000 j/kg
689000 J
689000 J/kg
- 12. Multiple Choice
The amount of heat required to change 1 kg of liquid into gas at constant temperature is called
heat of fusion
heat of vaporization
heat of change of state
heat of solid
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