CHEMISTRY [5 Mark Question Answer]

Take half a glass of water. Dip a spoon in it. What do you observe? The water level rises, indicating that spoon occupies space.
Now remove the spoon, water comes down to its original level. Now add a spoon of sugar to it and stir well. The sugar disappears but the level of water in the glass does not rise, that means the volume of water has not increased. But where did the sugar particles disappear?
The sugar particles being smaller get adjusted between the water molecules. This shows that there are intermolecular space in water.

There are three states of matter

• Solid State : The molecules are very close to each other hence intermolecular spaces are small and intermolecular force is strong.
  Hence solids have definite volume, rigid, retain definite shape and are incompressible.
  • Liquids : The molecules are less closely packed have more intermolecular spaces than solid, less stronger forces than solids.
    Hence liquids have definite volume but no definite shape. They take the shape of container in which they are put.
  • Gases: The molecules in the gases are for apart with weakest force of attraction. Hence gases have neither definite volume nor definite shape and compressible.