P1
- Created by: gums
- Created on: 27-07-15 22:47
Other questions in this quiz
2. As a solid melts:
- its temperature stays the same
- its temperature decreases
- its temperature increases
3. The specific latent heat of melting for lead is 22.4 kJ/kg and that of oxygen is 13.9 kJ/kg. This means:
- more energy is needed to melt lead than is needed to melt oxygen
- more energy is needed to heat lead than is needed to heat the same mass of oxygen by the same amount
- lead melts at a high temperature
4. Which statement about units is correct?
- Temperature is measured in °C and energy in J
- Temperature is measured in J and energy in °C
- Temperature is measured in °C and energy in W
- Temperature is measured in °C and energy in K
5. The specific heat capacity of water is 4181 J/kg/°C and that of lead is 128 J/kg/°C. This means:
- Lead melts at a low temperature
- More energy is needed to heat water than is needed to heat the same mass of lead by the same amount
- More energy is needed to boil water than is needed to boil lead
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