Physical versus chemical change

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Physical versus chemical change
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A newspaper turns brown in the sun
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A pond freezes
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Clouds are made of water
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Salt is made

• Na Cl ? NaCl

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Paper is torn in half
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Ice cream melts
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Photosynthesis

• H2O CO2 Light ? C6H12O6

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An egg cooks
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Fabric is dyed
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You mix a cake
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You bake a cake
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Your body digests food