Physical and chemical changes

Front

What is a physical change?

Back

A physical change changes the physical properties of an object, but does not create a new substance.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is a chemical change?

Back

A chemical change creates a new substance and cannot be undone.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is melting ice a physical or chemical change?

Back

Physical change.

Tags

NGSS.MS-PS1-4

Front

Is burning wood a physical or chemical change?

Back

Chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is dissolving sugar in water a physical or chemical change?

Back

Physical change.

Front

Is rust forming on iron a physical or chemical change?

Back

Chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What happens to the substance in a physical change?

Back

The substance remains the same, only its form or appearance changes.

Front

What happens to the substance in a chemical change?

Back

The substance changes into a different substance with new properties.

Tags

NGSS.MS-PS1-2

Front

Can physical changes be reversed?

Back

Yes, physical changes can often be reversed.

Front

Can chemical changes be reversed?

Back

No, chemical changes usually cannot be reversed.