States of Matter:Solid,liquid and Gas

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Matter is anything which has mass and occupies space

It exists in 5 Phases VIZ, solid, liquid, gas, plasma, Bose Einstein condensate. out of which the former three are commonly seen.

States of matter

The three important States of matter are discussed below


  • They have definite volume and shape
  • They are incompressible and have strongest intermolecular interaction
  • They are very dense as compared to liquid and gas example wood stone iron etc

Melting point

  • It is the temperature at which a substance convert from its solid state to liquid state melting point of ice at zero degree centigrade
  • Melting point decreases in the presence of impurity


  • It is the process of conversion of a substance from the solid phase 2 gas page without passing through and intermediate liquid phase
  • It is used to separate sublimate from non sublimate


  • They have definite volume but no definite shape. they take the shape of the vessel in which they are kept.
  • They can close or considered as fluids e.g. milk, water, Mercury etc.

Boiling point

  • It is a temperature at which vapor pressure of liquid become equal to atmospheric pressure
  • It is different in different places
  • Boiling point of water at normal condition is 100 degree centigrade
  • It usually decreases at high altitude that’s why at high altitudes, the boiling point of water is less than 100 degree centigrade add more time is required to cook a food
  • Boiling point of water in pressure cooker is high due to high pressure and hence, less time is required to cook the food.
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  • Boiling point increases in the presence of impurity


  • It is the process of conversion of a liquid into vapours at any temperature below its boiling point.
  • It increases with increase in surface area and temperature
  • It produce cooling. that’s why we feel cool and some nail polish remover or spirit is kept on our palm


  • They have neither definite volume no definite shape. they take the shape and volume of the container in which they are filled.
  • They are highly compressible.
  • They can flow so considered as fluids e.g. air, Oxygen and nitrogen.


  • It is the process of conversion of gas into liquid
  • Solid, liquid and gases are interconvertible by changing the condition of temperature and pressure
  • Fluorescent tube contain helium gas and neon sign bulb continue on gas


  • The fourth state of matter is called plasma. this state content ionized gas is super energetic and super excited particles.

Bose Einstein condensate

  • In 1924-25, Satyendra Nath Bose and Albert Einstein gave the information about Bose Einstein condensate. it is a state of matter of lower density gas of boson cooled up 2 temperature which is very close to absolute zero or – 273. 15 degree centigrade. in fact, it is a fifth state of matter

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