Chemical and Physical Changes in Matter

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

Give an example of a chemical change.

Back

An example of a chemical change is the reaction between vinegar and baking soda, which produces carbon dioxide gas.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Give an example of a physical change.

Back

An example of a physical change is ripping paper.

Front

What happens to the properties of substances during a chemical change?

Back

The properties of substances change because new substances are formed.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

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

Back

The properties may change in appearance or state, but the substance remains the same.

Tags

NGSS.MS-PS1-4

Front

What is an indicator of a chemical change?

Back

Indicators of a chemical change include color change, gas production, temperature change, and the formation of a precipitate.

Tags

NGSS.MS-PS1-2

Front

What is an indicator of a physical change?

Back

Indicators of a physical change include changes in state (solid, liquid, gas) or shape.

Tags

NGSS.MS-PS1-4

Front

What is the role of heat in boiling water?

Back

Heat is added to the water, causing the molecules to move quickly and form bubbles.

Front

Is melting ice a chemical or physical change?

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Melting ice is a physical change because it changes from solid to liquid without altering its chemical composition.

Tags

NGSS.MS-PS1-4