MATTER:
Anything that has a mass and occupies space is made of matter.
There are three states if matter:
Solid
Liquid
Gas
Water is the best example of three states of matter.
The solid state of water is ice. Ice exists in many forms like, ice cubes, snow, glaciers and icebergs.
The liquid state is water itself. Water is found in oceans, rivers and underground deposits.
The gaseous state of water is steam. Steam is used in thermal power stations and steam engines.