States of Matter

Any matter can exist in following states-

1. Solid : A substance whose melting point and boiling points are above room temperature are called solid. Ex: Book, pen, table etc.

2. Liquid : A substance whose melting point is below room temperature and boiling point is above room temperature is called a liquid. Ex: milk, water, honey etc.

3. Gas: A substance whose melting and boiling points are below room temperature is called a gas. Ex: oxygen, hydrogen, nitrogen etc.

4. Plasma : A substance which has a mixture of positively and negatively charged particles or ions is called plasma. The plasma state is formed by superheating of a gas. Ex: Sun etc

5. Bose-Einstein condensate: A substance in which the atoms loose their identity and condensed to form a single super atom is known as BEC. The state is formed by supercooling a substance.

Energy in states of matter : The order of the energy level of the states of matters is as follows:

Solid<Liquid<Gas

We know that liquids are obtained by heating solids. Again, gases are obtained by heating liquids. Hence, solids gain energy to be liquid and liquids gain energy to be gas.

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