Final answer:
The properties used to identify a substance as a solid, liquid, or gas are particle motion, shape, and compressibility.
Step-by-step explanation:
The properties that can be used to identify a substance as a solid, liquid, or gas include:
- Particle motion: For solids, particles are closely packed and vibrate in fixed positions. For liquids, particles are close together but can move past each other. For gases, particles are far apart and move freely.
- Shape: Solids have a definite shape, liquids take the shape of their containers, and gases have no definite shape.
- Compressibility: Solids are not easily compressible, liquids are slightly compressible, and gases are highly compressible.
Learn more about Properties of solids, liquids, and gases