Chemical and Physical Changes

Chemical and Physical Changes

Assessment

Flashcard

Science

5th Grade

Hard

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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 does not alter the chemical composition of a substance. Examples include melting, freezing, and boiling.

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. The atoms in the reactants rearrange to form products with different characteristics.

3.

FLASHCARD QUESTION

Front

Is melting ice a chemical or physical change?

Back

Melting ice is a physical change.

4.

FLASHCARD QUESTION

Front

What happens to the molecules during a physical change?

Back

The molecules may change their state (solid, liquid, gas) but their chemical structure remains the same.

5.

FLASHCARD QUESTION

Front

Can a physical change be undone?

Back

Yes, physical changes can often be reversed, such as freezing water back into ice.

6.

FLASHCARD QUESTION

Front

Can a chemical change be undone?

Back

No, chemical changes usually cannot be reversed, as new substances are formed.

7.

FLASHCARD QUESTION

Front

What is an example of a physical change?

Back

An example of a physical change is boiling water.

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