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Asked by morrisdougal to Ben, Clare, Ezzy, Mario, Sam on 16 Mar 2012.
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Ben Smart answered on 16 Mar 2012:
Yep! Freezing and melting water is just changing it from a liquid to a solid and back again, and you can do that as many times as you like.
When you freeze water what you’re doing is joining water molecules together. When you melt ice you’re separating the water molecules.
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Sam Vinko answered on 16 Mar 2012:
As many time as you like. Water in mountain lake has been doing this for millions of years.
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Mario Campanelli answered on 16 Mar 2012:
sure, and it happens every winter/summer when snow becomes rain etc.
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Clare Burrage answered on 18 Mar 2012:
Yep, if you have enough energy you can do this as many times as you like. The difference between liquid water and solid water (ice) is just how far apart the water molecules are, and how much energy they have. If you give the water enough energy the molecules can move apart from one another and you get liquid water. If you take away their energy the molecules come close together and you get ice.
But the water molecules are always the same whether water is liquid or solid. -
Elizabeth Pearson answered on 18 Mar 2012:
Yeah. Freezing and melting water doesn’t change the molecules, just how they’re arranged so you can do it a million times without worry. Most will have been frozen and thawed at some point.
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