chemical and Physical Properties of Matter

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What is a physical change?

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A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and dissolving.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is a chemical change?

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A chemical change is a change that results in the formation of new chemical substances. Examples include burning, rusting, and baking.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

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Is melting butter for popcorn a chemical or physical change?

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Physical change.

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NGSS.MS-PS1-4

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What is a chemical property?

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A chemical property is a characteristic of a substance that can only be observed during a chemical reaction. Examples include flammability and reactivity.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a physical property?

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A physical property is a characteristic of a substance that can be observed or measured without changing the substance's chemical identity. Examples include color, melting point, and density.

Tags

NGSS.MS-PS1-4

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What happens when sugar dissolves in water?

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This is a physical change because the sugar retains its chemical identity.

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What is an example of a chemical change?

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Baking a cake is an example of a chemical change because new substances are formed.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is an example of a physical property?

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Color is an example of a physical property.

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What does it mean if a substance burns?

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If a substance burns, it indicates a chemical property, specifically that it is flammable.

Tags

NGSS.MS-PS1-2

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What is the crystalline structure of a substance?

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A crystalline structure refers to the orderly, repeating arrangement of atoms or molecules in a solid.

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NGSS.HS-PS1-3