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26 December, 02:31

Hard water contains calcium and magnesium which undergo oxidation and clog water pipes. Which statement best describes this change as a chemical change?

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  1. 26 December, 04:03
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    A chemical change happened in this phenomenon because calcium and magnesium are oxidized and are deposited in the pipes. These deposits are new substances. A chemical change is characterized by the formation of new substances where the substances have a whole new properties.
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