The four fundamental states of matter are solid, liquid, gas and plasma, but there others, such as Bose-Einstein condensates and time crystals, that are man-made.

States of Matter. By Richard Pommier Swanson; Posted 01.08.08; NOVA; Water is the only substance on Earth that occurs naturally as a solid, liquid, and gas.

Water's a great way to think about what scientists call states of matter. Liquid, solid, and gas. Water can exist in all three of these states, and you can turn it from one state to another just ...