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Heating and Cooling
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Reversible or Irreversible: tearing paper
Irreversible
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When you heat a stick of butter, what state of matter does it change to? It changes from solid to....?
It changes from Solid to Liquid
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How can you solidify melted chocolate, by heating or cooling?
cooling
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Draw an examples of Reversible Changes
Melting butter then cooling it and melting an ice cube then re-freezing it in the freezer are both common examples.
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How can you tell if a change is Reversible?
If the object that changed can go back to its original form, then it is reversible.
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Draw an examples of Irreversible Changes
Popcorn popping, cooking eggs, making cupcakes, and lighting something on fire are all common examples
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How can you melt an ice, by heating or cooling?
Heating
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Reversible or Irreversible: turning ice into water
Reversible
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Reversible or Irreversible: cooking an egg
Irreversible
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Reversible or Irreversible: Baking a cake
Irreversible Change
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