Physical vs. Chemical Changes

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.

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What is a chemical change?

Back

A chemical change is a process where one or more substances are transformed into new substances with different properties.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is evidence of a chemical change?

Back

Evidence of a chemical change includes the formation of a new substance, color change, gas production, or temperature change.

Tags

NGSS.MS-PS1-2

Front

Can physical properties be observed without changing the substance?

Back

Yes, physical properties can be observed without changing the identity of the substance.

Front

Is melting ice a physical or chemical change?

Back

Melting ice is a physical change.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Front

What happens to the identity of a substance during a chemical change?

Back

The identity of a substance changes during a chemical change as new substances are formed.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is an example of a physical change?

Back

An example of a physical change is freezing water to make ice.

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NGSS.MS-PS1-4

Front

What is an example of a chemical change?

Back

An example of a chemical change is rust forming on iron.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not alter the chemical composition of a substance, while a chemical change results in the formation of new substances.

Tags

NGSS.MS-PS1-2

Front

Is bending a metal wire a physical or chemical change?

Back

Bending a metal wire is a physical change.