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4. A student heats copper metal over a flame, and it begins to react with oxygen gas (diatomic

molecule 02) in the air. A green flame is seen. Copper (11) Oxide is formed.
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User Noy Oliel
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1 Answer

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Step-by-step explanation:

Since Oxygen and Copper combine to form Copper Oxide. Therefore, this is a combination reaction

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User Akhansari
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