Mots Croisés States and Phase Changes CrosswordVersion en ligne Key terms about matter and phase changes. par Dawn Popovic 1 A form with definite shape and volume; particles are closely packed. 2 A fluid with definite volume but no fixed shape; takes container. 3 A highly compressible state with no fixed shape or volume. 4 Transition from a solid to a liquid when heated. 5 Transition from a liquid to a solid when cooled. 6 Phase change where a liquid becomes a gas at the surface or below boiling. 7 Phase change where a gas becomes a liquid when cooled. 8 a substance's mass per unit of volume 9 A change in the form of a substance that does not change its chemical composition 10 requiring the absorption of heat. Bringing the heat into 11 the release of heat, exiting 1 6 2 7 5 10 11 3