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2 May, 10:29

Why do magnesium and oxygen need to be heated for a reaction to occur?

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  1. 2 May, 10:44
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    Because flame provides a source of heat so that the magnesium metal atoms can overcome their activation energy. Activation energy is the minimum energy required in order for a chemical reaction to proceed. When the magnesium metal burns it reacts with oxygen found in the air to form Magnesium Oxide.
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