separating metals from metal oxide

• What is the process of gaining oxygen called?

  Oxidation
• What happens when magnesium combines with oxygen?

  It forms magnesium oxide through oxidation
• What does reduction refer to in chemical terms?

  Loss of oxygen from a compound
• What is produced when magnesium oxide is reduced?

  Magnesium and oxygen
• What is iron oxide commonly known as?

  Rust
• Why do most metals oxidize when exposed to oxygen?

  Oxygen is abundant in the atmosphere
• Which metals are often found as pure metals?

  Unreactive metals like gold
• What is the most common bonding for metals found in nature?

  Bonded to oxygen
• How can we obtain pure metals from metal oxides?

  By reducing the metal oxides
• What is the cheapest way to reduce metal oxides?

  Using carbon
• What does carbon do in the reduction of metal oxides?

  It takes oxygen to form carbon dioxide
• Which metals can be extracted using reduction with carbon?

  Zinc, iron, and copper
• What is the process called for extracting more reactive metals?

  Electrolysis
• Why is electrolysis expensive?

  It requires a lot of energy
• What is the most common iron ore?

  Fe₂O₃
• How do we isolate pure iron from iron oxide?

  By reducing iron oxide with carbon
• What is the balanced equation for reducing Fe₂O₃ with carbon?

  Fe₂O₃ + C → Fe + CO₂
• Why can iron be reduced with carbon but not more reactive metals?

  Iron is less reactive than carbon
• What do we need to supply to reduce iron oxide?

  Some heat
• What happens to carbon during the reduction of metal oxides?

  Carbon is oxidized as it gains oxygen
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