1. States Of Matter
K 2.2 Changes of state

2. Changes of state
Temperature – The average kinetic energy of individual particles
Evaporation-liquid particles escape and turn into gas (not at boiling point)
Motion may help to speed up evaporation.
Temperature cools where evaporation takes place.

5. Changes of state
Condensation-when gas particles slow down and liquify.
As liquids condense, they release heat.
Heat-movement of thermal energy from a higher temperature to lower.

7. Changes of state
Thermal energy – the total kinetic and potential energy of all the particles in a substance
Specific Heat – amount of heat required to raise the temperature of 1 gram of a substance 1 degree Celcius

8. Changes of state
Melting point-temperature where a solid becomes a liquid.
Freezing point-temperature where a liquid or gas becomes a solid.
Boiling point-temperature at which a liquid begins to turn into a gas.
Liquid turning into gas-vaporization

10. Changes of state
Melting point and freezing point are going to be at the same temperature.
Heat of fusion-amount of heat required to melt 1 kg of a solid at it’s melting point.