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Study
Review Unit 3- Materials changing shapes
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What is he doing?
bending
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Okay!
Does rice dissolve in water?
No
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Name one thing can dissolve in water and one thing can't dissolve in water.
Sugar/
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Is this bending?
No, it is stretching.
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When it's too cold, what happens to the liquid coconut oil?
It becomes solid.
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Why do we sometimes need to use heat and tools to bend and twist the metal?
Because metal is hard.
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Are these elastic or not?
Yes
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What is she doing with dough?
squashing
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When there is a power cut, what happens to ice in the fridge?
it melts.
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Sugar, oil, salt, sand. Which ones can dissolve in water?
Sugar and salt
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Do we need to use heat to bend and twist balloons?
No.
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What do we need to use to bend the hard metal?
heat and tools
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Is it elastic or not?
No
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Why is the sea salty?
Because it has salt.
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Is it elastic or not?
Yes
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Is it elastic or not?
yes, it is.
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Where does the salt come from?
From rock on land and from rock in the bottom of the sea
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Is it stretching or twisting?
twisting
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Okay!
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