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.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances, involving a rearrangement of atoms.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is melting ice a physical or chemical change?

Back

Physical change.

Front

Is burning wood a physical or chemical change?

Back

Chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is an example of a physical change?

Back

Examples include melting, freezing, dissolving, and breaking.

Front

What is an example of a chemical change?

Back

Examples include rusting, combustion, and digestion.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What evidence indicates a physical change has occurred?

Back

Evidence includes changes in shape, size, phase (solid, liquid, gas), or state.

Front

What evidence indicates a chemical change has occurred?

Back

Evidence includes color change, temperature change, gas production, or formation of a precipitate.

Tags

NGSS.MS-PS1-2

Front

Is dissolving sugar in water a physical or chemical change?

Back

Physical change.

Front

Is cooking an egg a physical or chemical change?

Back

Chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5