Pressure:
On increasing pressure:
i. On increasing pressure, particles of matter come closer.
ii. If pressure is increasingly applied on a gas, particles of the gas come more closer and a stage is reached when gas may change into liquid.
iii. If pressure is increasingly applied on a liquid, it will change into liquid.
On reducing pressure:
i. On reducing pressure, particles of matter expand.
ii. If reducing pressure is applied on a liquid, it will change into gas.
iii. If reducing pressure is applied on a solid, it will change into liquid.
Temperature:
On increasing temperature:
i. The kinetic energy of the particles increases.
ii. Due to the increase in kinetic energy, the particles start vibrating with greater speed.
iii. As a result, the particles leave their fixed positions and start moving freely.
iv. If temperature is increasingly applied on solid, it will change into liquid state.
On decreasing temperature:
i. On decreasing the temperature of any state, the particles come closer:
ii. If we apply reducing temperature on gas, it will change into liquid.
iii. If we apply reducing temperature on liquid, it will change into solid.
