Experiment:

i) Take a 100ml beaker and fill it with 50ml water. Mark the level of water in the beaker.

ii) Add 1 tablespoons of salt to it.

iii) Stir the water until the salt crystals can no longer be seen and are completely dissolved. Note the level of water.

iv)The level of water does not increase.

Diagrammatic Representation:

Explanation: The level of water does not increase after the addition of salt. This observation supports the assumption that matter is made up of particles as a tablespoon of salt contains many salt crystals which are made up of salt particles. These particles were able to dissociate in water and got evenly distributed in the intermolecular spaces present in water due to which the level of water did not change.