Physical and Chemical Changes Review

Physical and Chemical Changes Review

Assessment

Flashcard

Science

8th Grade

Hard

Created by

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and bending.

2.

FLASHCARD QUESTION

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and includes changes such as rusting, burning, and digestion.

3.

FLASHCARD QUESTION

Front

How does temperature affect chemical reactions?

Back

Higher temperatures usually cause chemical reactions to happen faster due to increased energy and movement of particles.

4.

FLASHCARD QUESTION

Front

What is an example of a physical change?

Back

Filling an ice cube tray with water that freezes into ice cubes is an example of a physical change.

5.

FLASHCARD QUESTION

Front

What is a sign of a chemical change?

Back

A sign of a chemical change is the production of a new odor, color change, gas formation, or the formation of a precipitate.

6.

FLASHCARD QUESTION

Front

Is painting a door a physical or chemical change?

Back

Painting a door is an example of a physical change because the paint can be removed without changing the door's chemical structure.

7.

FLASHCARD QUESTION

Front

What happens to the properties of a substance during a physical change?

Back

The properties of a substance may change (like shape or state), but its chemical identity remains the same.

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