The Heating/Cooling Curve of a Pure Subtance Notes
Solid:Below melting Point. The paritcle are closely pock together.The force between is very strong and can be only vibrate at a fixed position.
Heated:As it is heated, the kinetic energy is converted. Kinetic energy increase. The molecule vibrate faster at a fixed position.
Melting:The subtance will be frozen or melting, depending on the direction.
Solid and Liquid:It exists both liquid and solid states. The temperature remain constant. The heat supplied to it is used to overcome the forces of attraction to bring them pack closer.
Solid to Liquid:All has completely melted. Solid has turned into liquid.
Liquid:It is in liquid state. The molecules gain more energy and temperature increases. The praticles become faster and faster.
Evaporation:It still exist in liquid state. It molecule have received enough energy to overcome the force of attraction between particles. Some molecules become more freely and liquid begins to change into gas.
Liquid and Gas:The temperature unchanged. The heat energy absorbed is used to overcome the intermolecular force. This constant temperature is the boiling point.
Liquid to Gas:All of the liquid has turned into gas.
Gas:The gas practicles continue to absorb more energy and move faster. The temperature increases as heating continues.
