Amplify Phase Change Unit Review
Flashcard
•
Science
•
7th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the main difference between evaporation and boiling?
Back
Evaporation occurs at the surface; boiling occurs throughout the liquid.
2.
FLASHCARD QUESTION
Front
What is the term for the amount of energy required to change a substance from solid to liquid at its melting point?
Back
Heat of fusion.
3.
FLASHCARD QUESTION
Front
What happens to the molecules of a substance when energy is added and it undergoes a phase change to gas?
Back
The molecules move faster and the substance becomes a gas.
4.
FLASHCARD QUESTION
Front
How do the attractions between molecules differ in substances that change phase compared to those that do not?
Back
Substance that changes phase has weaker attraction between its molecules than the one that does not.
5.
FLASHCARD QUESTION
Front
What happens to the temperature of a substance during a phase change?
Back
The temperature remains constant.
6.
FLASHCARD QUESTION
Front
Define phase change.
Back
A transition of a substance from one state of matter to another, such as solid to liquid or liquid to gas.
7.
FLASHCARD QUESTION
Front
What is condensation?
Back
The process by which a gas turns into a liquid.
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