6 Questions
What occurs when a substance undergoes a phase change from solid to liquid?
Molecules speed up and move farther apart
What is the temperature at which water boils?
100°C, 212°F, or 373 K
What is the process called when a substance changes from a gas to a liquid?
Condensation
What happens to the molecules during the process of vaporization?
They speed up and move farther apart
What is the term for the lowest possible temperature, at which all matter stops moving?
Absolute Zero
What is the process called when a substance changes from a solid to a gas, without going through the liquid phase?
Sublimation
Test your understanding of phase changes, including melting, freezing, vaporization, and evaporation. Learn about the processes that occur during these changes and how they are related to heat energy and molecular motion.
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