PH-446
States of matter
Physics · Secondary 3 · Medium · States of matter
A substance is placed in a sealed cylinder with a movable piston. When the piston is pulled out, the substance spreads to fill the larger volume. When the piston is pushed in, its volume decreases a lot. What state of matter is this substance in?
- Solid
- Liquid
- Gas
- Mixture of solid and liquid
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