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Question 3:

Which of these chemical reactions is an oxidation reaction?

A. Aluminum carbonate → aluminum oxide + carbon dioxide
B. Calcium + oxygen → calcium oxide
C. Hydrogen peroxide → water + oxygen
D. Hydrochloric acid + sodium hydroxide → sodium chloride + water



Answer :

GinnyAnswer

Final answer:

In an oxidation reaction, calcium loses electrons while oxygen gains electrons.


Explanation:

Oxidation reaction: An oxidation-reduction reaction involves a change in oxidation states. In the reaction between Ca and O2 to form CaO, Ca loses electrons (is oxidized) while O2 gains electrons (is reduced).


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