Question

what is hattere? write their state of exists?​

Answer 1

Anything that has mass and volume (occupies space) are called matter.

solid-  

substance that retains its size and shape without a container; a substance whose molecules cannot move freely except to vibrate.

gas-

substance that can only be contained if it is fully surrounded by a container (or held together by gravitational pull); a substance whose molecules have negligible intermolecular interactions and can move freely.

liquid-

substance that flows and keeps no definite shape because its molecules are loosely packed and constantly moving. It takes the shape of its container but maintains constant volume.