Question

heating zinc oxide is a physical change how

Answer 1

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zinc oxide is a white powder the loss of oxygen make it reversible chemical change ...

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Answer 2

Heating zinc oxide is physical changes because zinc oxide is a white powder the loss of oxygen makes it reversible chemical change so the oxidation takes place.

Heating zinc oxide a physical or chemical change as well as Zinc oxide is a white powder. When heated strongly (above 800°C) it turns yellow but becomes white again when cold.