system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
What are the classical states of matter?


assistant
1. Solid: Matter in a solid state is comprised of particles that are held very closely together. Solids hold a definite shape. 
2. Liquid: Matter is in a mostly non-compressible fluid state. Liquid matter conforms to the shape of its container. 
3. Gas: Matter in a gaseous state is composed of compressible fluids. It may also take the shape of its container, but it will also expand to fill the container.