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What change of state occurs when a substance is heated to its boiling point? A) liquid to gas B) liquid to solid C) solid to liquid D) gas to liquid
Answer
When a substance is heated to its boiling point, it changes from a liquid to a gas. The correct option is A) liquid to gas, which is the process of boiling (vaporization).
Explanation
What the boiling point tells you
The boiling point is the temperature at which a liquid has enough energy for bubbles of vapor to form throughout the liquid and escape as gas.
Matching boiling to the correct state change
- Boiling (vaporization): liquid $\rightarrow$ gas
So the correct choice is A) liquid to gas.
Why the other options are different processes
- B) liquid $\rightarrow$ solid is freezing.
- C) solid $\rightarrow$ liquid is melting.
- D) gas $\rightarrow$ liquid is condensation.
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Skills You Achive
states-of-matter
phase-changes
temperature-and-heat
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