'Matter' what is this?

We know every subtance is made up of matter, we heard this. but do we know what is this matter? what form matter have?
Do we wonder with what the whole universe, different things on earth are made up of?
It is 'matter' from which the whole universe, every subtance is made up of. It is not english matter, The scientific meaning of matter is that which has mass & occupies space. Matter is every subtance in universe everything that is not simply empty space.
There are three different states of matter. Solid, liquid & gas.
Solid has strenth & definite shape. Each subtance is made from minute bits called molecules. In solid the molecules are bounded together firmly in regular shape.
A liquid is a subtance in state like water, which flows & takes the shape of any container it is poured into. It does thi because although bounds hold its molecules together, the bounds are loose enough for molecules to roll over each other.
A gas is when a subtance is in a state like air. It does not have any shape, strength or volume. The molecules move so fast that they break any bound that might hold them together.
When a matter in a state get heated or cooled then the distance between molecules increases, results in change of state of the the matter. When solid is heated then it transforms to liquid & when liquid is heated it changes to gas. Exact reverse process is followed when we cool subtances.