Notes Chapter 1 Matter In Our Surroundings CBSE 9th Class Science
A matter is something which occupies the space and has mass. A matter is found in five states which are as follows:
Characteristics of particles of matter:
The following are notable characteristics of matter:
- they have spaces among them,
- they attract each other,
- they move continuously,
- their kinetic energy increase by the increase in temperature.
States of matter
Matter can be classified upon following criteria:
- energy of particles,
- arrangement of particles,
- distance between the particles.
The five states of matter are as follows:
- Bose einstein.
Difference between Solid, Gas and Liquid
Plasma is the fourth state of matter and is an ionized gas. It gets affected by the magnetic fields and that is why it is the best conductor of electricity. Being a gas, its volume, and shape is indefinite.
Bose-einstein condensate – BEC
It is the state of matter which arises as a result of cooling of the gas at a very low temperature usually at 0 k. This state was first coined by the Albert einstein and Satyendra Nath Bose. That is why this was names over their invention. In BEC, the molecules are found so close which are not so close even in solids.