metal + oxygen → metal oxide
Recall the mnemonic for redox reactions:
Loss Electrons → Oxidation → Reducing Agent
Gain Electrons → Reduction → Oxidizing Agent
element that loses electrons/oxidized is the reducing agent.
Write the equation for the reaction of calcium and oxygen.
Write the oxidation numbers for both the reactants and the products.
What is the reducing agent and why?
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What scientific concept do you need to know in order to solve this problem?
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