Multiple choice

The critical temperature is the maximum temperature at which substance can remain as

  1. Solids

  2. Liquids

  3. Gases

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Liquids are formed when the energy (usually in the form of heat) of a system is increased and the rigid structure of the solid state is broken down. In liquids, molecules can move past one another and bump into other molecules; however, they remain relatively close to each other like solids.The highest temperature at which a substance can exist as a liquid is called its critical temperature.

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