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Review Unit 3- Materials changing shapes

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  • What is he doing?
    bending
  • Does rice dissolve in water?
    No
  • Name one thing can dissolve in water and one thing can't dissolve in water.
    Sugar/
  • Is this bending?
    No, it is stretching.
  • When it's too cold, what happens to the liquid coconut oil?
    It becomes solid.
  • Why do we sometimes need to use heat and tools to bend and twist the metal?
    Because metal is hard.
  • Are these elastic or not?
    Yes
  • What is she doing with dough?
    squashing
  • When there is a power cut, what happens to ice in the fridge?
    it melts.
  • Sugar, oil, salt, sand. Which ones can dissolve in water?
    Sugar and salt
  • Do we need to use heat to bend and twist balloons?
    No.
  • What do we need to use to bend the hard metal?
    heat and tools
  • Is it elastic or not?
    No
  • Why is the sea salty?
    Because it has salt.
  • Is it elastic or not?
    Yes
  • Is it elastic or not?
    yes, it is.
  • Where does the salt come from?
    From rock on land and from rock in the bottom of the sea
  • Is it stretching or twisting?
    twisting