Answer:
Solid have closely packed molecules and is characterized by structural rigidity and resistance to a force applied to the surface. It has a definite shape.
Liquid conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. It is the only state with a definite volume but no fixed shape.
Gas is a state of matter that has no fixed shape and no fixed volume. Gases have a lower density than other states of matter, such as solids and liquids.
