A change in a material's state of matter is caused by changes to the internal energy. The size of the change required depends on each material's 'heat capacity' and 'latent heat capacity'.
What happens to the molecules in a liquid as it gets hotter?
Stay at the same speed
What happens to the molecules in a solid as it gets hotter?
What is internal energy?
The kinetic energy of the particles
The chemical potential energy of the bonds between particles
The kinetic energy of the particles and the chemical potential energy of the bonds between them
How much energy will it take to raise 3 kg of water by 5°C? (water has a specific heat capacity of 4,200 J/kg°C)
A 5 kg block of copper (specific heat capacity = 385 J/kg°C) at 20°C is given 46,200 J of energy. What will be its final temperature?
If the same amount of heat energy were to be provided to a block of twice the mass of the same material, what would happen to the temperature rise?
It would be double
It would be the same
It would be half
How much energy will a 30 W heater provide in 5 minutes?
How much energy is needed to melt 150 g of ice at 0°C to water at the same temperature? (Specific latent heat of fusion of water = 334 kJ/kg.)
How much water at 100°C would be turned into steam at the same temperature by 678 kJ of energy?
(Specific latent heat of vaporisation of water = 2,260 kJ / kg.)
When doing an experiment to find the specific heat capacity, which of these items of equipment are not needed?
A force meter