Phase Change Final Study Guide

Phase Change Final Study Guide

Assessment

Flashcard

Science

7th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a phase change?

Back

A phase change is a transition of matter from one state (solid, liquid, gas) to another due to the addition or removal of energy.

2.

FLASHCARD QUESTION

Front

What happens to water molecules during evaporation?

Back

During evaporation, water molecules gain energy and escape from the liquid phase into the gas phase.

3.

FLASHCARD QUESTION

Front

Why does water boil at a lower temperature on Mars than on Earth?

Back

Water boils at a lower temperature on Mars due to lower air pressure, allowing water molecules to escape more easily.

4.

FLASHCARD QUESTION

Front

What is the independent variable in an experiment?

Back

The independent variable is the factor that is changed or controlled by the experimenter to test its effects.

5.

FLASHCARD QUESTION

Front

What is the dependent variable in an experiment?

Back

The dependent variable is the factor that is measured or observed in an experiment.

6.

FLASHCARD QUESTION

Front

What happens to chocolate when heated near a campfire?

Back

Chocolate melts because heat increases the movement of its molecules.

7.

FLASHCARD QUESTION

Front

What is condensation?

Back

Condensation is the process where water vapor cools and changes back into liquid water.

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