Physical characteristics of water

Importance of water

A basic need of all life on earth

Percentage of water on the Earth's surface

70%

Pure water

Colourless, odourless and tasteless

Water at room temperature

Exists as liquid

Boiling point of pure water

100 degree celcius

Freezing point of pure water

0 degree celcius

Density of pure water

Surface tension

The result of cohesive force between the molecules of water at the surface

Cohesive force

Attractive force between same molecules

Adhesive force

Attractive force between different molecules