Modeling Matter

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What is a chemical change?

Back

A chemical change is a process where there is a change in the properties of a substance, resulting in the formation of a new substance.

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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 physical change.

Back

An example of a physical change is when a solid dissolves in a liquid.

Front

What happens to a substance at higher temperatures?

Back

At higher temperatures, substances can change their state (e.g., solid to liquid) and may exhibit different physical properties.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What are the properties of a substance?

Back

The properties of a substance include characteristics such as color, odor, density, melting point, boiling point, and solubility.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is an example of a chemical change?

Back

An example of a chemical change is iron powder mixed with water, which can lead to rusting.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is matter?

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Matter is anything that has mass and takes up space.

Tags

NGSS.MS-PS1-5

Front

What are the three states of matter?

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The three states of matter are solid, liquid, and gas.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

How can you identify a chemical change?

Back

You can identify a chemical change by observing changes in color, temperature, formation of gas, or the production of a precipitate.

Tags

NGSS.MS-PS1-2

Front

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

Back

A physical change does not create a new substance, while a chemical change results in the formation of one or more new substances.

Tags

NGSS.MS-PS1-2