Question

Change in the state of matter is mainly caused by change in

• A. Temperature
• B. Pressure
• C. Mass
• D. Volume

Answer 1

Answer: (A), (B)

The correct options are
A

Temperature

B

Pressure

Change in the state of matter is mainly caused by change in temperature and pressure.

Particles in solids have lesser kinetic energy when compared to liquids and gases. As temperature increases, the state changes from solids to liquids and then to gases.
As the pressure increases, the volume of the container decreases. As we know, in solids, particles are much closer to each other and the distance between the particles increases as we move towards the gaseous state. So, with the increase in pressure, gases can be converted to liquids and then to solids.