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Chemistry 21 Online
OpenStudy (anonymous):

H2O expands when it changes into solid. Please tell me another example like H2O.

OpenStudy (aaronq):

silicon

OpenStudy (anonymous):

Any kind of metal.

OpenStudy (anonymous):

Arsenic, bismuth, gallium, germanium, and silicon. If the pressure is high enough for liquid carbon to exist, diamond will float on it.

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