How to Find outAndTest

Physical and

Chemical Changes

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PHYSICAL CHANGE

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Physical Change

•Substance may seem different, but the way the atoms link up is the same.

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It’s a physical change if

•It changes shape or size•It dissolves.

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•It changes phase (freezes, boils, evaporates, condenses)

It’s a physical change if...

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CHEMICAL CHANGE

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•Changes the way the molecules link up

•Makes new substances

Chemical Change

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It’s a chemical change if….

•It burns

• Temperature changes without heating/cooling

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It’s a chemical change if...

•It bubbles (makes a gas)

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It’s a chemical change if...

•It changes color

•It forms a precipitate

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TEST

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What kind of change is it if someone...

•Tears up paper?•Physical change•Mixes salt and water?•Physical change

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What kind of change is it if someone...

•Burns paper?•Chemical change•Evaporates salt water?•Physical change

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What kind of change is it if someone...

•Mixes vinegar and baking soda?

•Chemical change

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Quiz

Number your paper (1-10)

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1. A. Physical Change B. Chemical Change

Rusting nails

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2. A. Physical Change B. Chemical Change

Effervescent tablet

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3. A. Physical Change B. Chemical Change

Cut paper

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4. A. Physical Change B. Chemical Change

Vinegar and Baking soda

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5. A. Physical Change B. Chemical Change

Salt and water

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6. A. Physical Change B. Chemical Change

Broken glass

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7. A. Physical Change B. Chemical Change

Burning wood

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8. A. Physical Change B. Chemical Change

Ice melting

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9. A. Physical Change B. Chemical Change

Removing iron filings from a mixturewww.makemegenius.com Free Science Videos for Kids

10. A. Physical ChangeB. Chemical Change

Boiling waterwww.makemegenius.com Free Science Videos for Kids

Check your paper and place in notebook 1. B - Chemical

2. B - Chemical

3. A - Physical

4. B - Chemical

5. A - Physical

6. A - Physical

7. B - Chemical

8. A - Physical

9. A - Physical

10. A - Physicalwww.makemegenius.com Free Science Videos for Kids