1. Solid: A state in which matter has a definite shape and volume. The particles in a solid are tightly packed together, and they vibrate in place but do not move around much.
2. Liquid: A state in which matter has a definite volume but not a definite shape. The particles in a liquid are loosely packed together and can move around more freely than in a solid.
3. Gas: A state in which matter has neither a definite shape nor a definite volume. The particles in a gas are very far apart and move around very quickly.
4. Plasma: A state in which matter is completely ionized, meaning that all of its electrons have been stripped away from its atoms. Plasmas are typically very hot and are often found in stars.
5. Bose-Einstein condensate (BEC): A state of matter that occurs at very low temperatures (near absolute zero) in which a large number of bosons (particles with integer spin) occupy the same quantum state. BECs are thought to exist in neutron stars and white dwarfs.
