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Reversible and Irreversible Changes

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  • eggs, flour, salt --> pancakes
    irreversible
  • (Heating or cooling?) melted popsicle --> frozen popsicle
    cooling
  • (Heating or cooling?) melted wax --> candle
    cooling
  • paper --> ash
    irreversible
  • popsicle --> melted popsicle
    reversible
  • chocolate bar --> melted chocolate
    reversible
  • Eggs, Sugar, Milk, & Flour --> cake
    irreversible
  • bread --> toast
    irreversible
  • raw egg --> fried egg
    irreversible
  • (Heating or cooling?) ice cube --> liquid water
    heating
  • candle --> melted wax
    reversible
  • liquid water --> ice cube
    reversible
  • (Heating or cooling?) melted chocolate --> chocolate bar
    cooling
  • regular nail --> rusted nail
    irreversible
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