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1. Magnesium and copper metals are heated directly over a flame. Which of the two will burn in air and why?
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Magnesium will burn in the air because he 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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Magnesium will burn in the air.
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