What are fluids? Give two examples.

Classify the following into solids, liquids and gases.

Oxygen, milk, common salt, wax, stone, LPG, carbon dioxide, sugar, mercury, coal, blood, butter, copper, coconut oil, kerosene.

Give reason:

Liquids and gases flow but solids do not.

Give reason:

A gas fills up the space available to it.

Give reason:

The odour of scent spreads in a room.

Give reason:

We can walk through air.

Give reason:

Liquids have a definite volume but no definite shape.

Give reason:

When a teaspoon of sugar is added to half a glass of water and stirred, the water level in the glass remains unchanged.

Give reason:

When an empty gas jar is inverted over a gas jar containing a coloured gas, the gas also spreads into the empty jar.