Take a glass of water,add sugar and will observe that there is no rise in water level .this shows that particle of matter have space between them .when sugar is added to the water the sugar the particles adjust between the space between the water  particles . so there is no rise in water level.
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Take a tumbler.
Pour water in it and mark the point.
Now add salt to it.
Now once again add salt to it and stir....
There is now rise in the water level
There exist space between the particles
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