Asked by tylen
Which of these is an example of a physical change?
sugar, when heated, producing carbon dioxide and water
solid ice, when heated, turning into liquid water
sodium, when exposed to chlorine, forming sodium chloride
aluminum, when heated in air, forming aluminum oxide
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Solid ice, when heated, turning into liquid water.
This is a physical change (a phase change) — the substance (H2O) remains the same chemically. The other examples involve chemical reactions that produce new substances.
This is a physical change (a phase change) — the substance (H2O) remains the same chemically. The other examples involve chemical reactions that produce new substances.
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