Topic
Chemistry & materials
Mixing, states, crystals, fire — why stuff changes.
ages 8-11 Why does ice float?
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ages 8–11 If you dissolve a whole sugar cube in water, does the water weigh more?
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ages 8–11 Why does hot cocoa mix in fast but cold milk leaves clumps?
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ages 8–11 Can you keep stirring sugar into water forever?
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ages 8–11 Why does a metal spoon feel colder than a wooden one sitting right next to it?
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