science - expantion and contraction

  What expands and contracts when getting hotter and colder in your house and garden?

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Almost all things expand as they get hotter, it is particularly noticeable in metals. Water is a special case, it expands when it freezes as well because it forms a regular structure of hydrogen bonds between it's molecules.
ralph.thompson
15 November 2010
Almost all things expand as they get hotter, it is particularly noticeable in metals. Water is a special case, it expands when it freezes as well because it forms a regular structure of hydrogen bonds between it's molecules.
ralph.thompson
15 November 2010
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