Theory:

Characteristics of Particles of Matter:
  
We can distinguish the characteristics of particles of matter into three types.
 
1. Particles of matter have space between them.
2. Particles in a mater are continuously moving.
3. Particles of matter attract each other.
1. Particles of matter have space between them.
  
In previous exercise we experimented with water and sugar /salt in a beaker. And we learnt that when we dissolve salt in water, the particles of  get into the spaces between particles of water.
 
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This experiment clearly shows that, there is enough space between the particles of matter.
 
Similarly when we make lemonade (lemon juice), tea or coffee we can observe the same principle.
 
2. Particles in a mater are continuously moving.
  
Particles of matter are continuously moving, but slowly. To clarify this concept we can do one experiment.
 
Take a glasses or bowl filled with water. And a drop of blue or red ink slowly along the sides of the bowl.
 
Leave it undisturbed for minutes. And note down what you're seeing after couple of minutes.
 
You can see that the ink is spreading to water slowly. This proves that the particles in a matter are moving.
 
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In another case if we increase the temperature, the particles motion will also increase therefore their kinetic energy also increases.
 
Therefore we can say that with increase in temperature the kinetic energy of the particles also increases.
 
3. Particles of matter attract each other.
  
The particles of matter attract each other due the various forces acting between them. These forces keep the particles together. The strength of the forces of attraction varies from one kind of matter to another.