What term describes the physical form of a substance (gas, solid, or liquid)?

• A. Temperature at which a substance burns
• B. How well a substance conducts electricity
• C. How much mass a substance has
• D. Physical form of a substance (gas, solid, liquid)

Answer: (D)

The term is state of matter. It describes the physical form something takes—solid, liquid, or gas—based on how its particles are arranged and how they move, which determines shape and volume. A solid keeps its shape, a liquid has a definite volume but takes the container’s shape, and a gas expands to fill the space available. The other options refer to ignition temperature, electrical conductivity, and mass—properties that don’t describe the physical form.