Substance X has a fixed volume, and the attraction between its particles is strong. Substance Y has widely spread out particles and can be compressed. What can most likely be concluded about these substances?
Substance X is a crystal, and substance Y is a liquid.
Substance X is a gas, and substance Y is a plasma.
Substance X is a plasma, and substance Y is a crystal.
Substance X is a solid, and substance Y is a plasma.