All matter is made up of particles in constant random motion. In this lesson, we will learn about the different changes in state of matter and the processes involved.
How Particles Behave When Heated or Cooled
All matter is made of particles in constant random motion.
When a matter is heated, particles take in heat energy. Kinetic energy of particles increases, hence particles move faster.
When a matter is cooled, particles lose heat energy. Kinetic
energy of particles decreases, hence particles move slower.
Changes in State of Matter
Changes in state are physical changes and are generally reversible.
Melting
Melting isthe process by which a substance changes from a solid to a liquid.
Freezing
Freezing is the process by which a substance changes from a liquid to a solid.
Boiling / Evaporation
Boiling/evaporation is the process by which a substance changes from a liquid to a gas.
Condensation
Condensation is the process by which a substance changes from a gas to a liquid.
Sublimation
Sublimation is the process by which a substance changes from a solid to a gas.
Deposition
Deposition is the process by which a substance changes from a gas to a solid.
Science with Tara 