Obtaining and Using Metals

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1. Metals that are hard to oxidise are ....

  • Do not fit in the reactivity series
  • Found at the bottom of the reactivity series
  • Found at the top of the reactivity series
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2. What is reduction?

  • The decomposition of a carbonate
  • The loss of oxygen
  • The gain of oxygen
  • The decomposition of ionic compounds

3. The extraction of a metal from its ore is ...

  • impossible
  • reduction
  • oxidation

4. What is corrosion?

  • The oxidation of metals
  • Dissolving substances in acid
  • Absorption of Carbon dioxide in Sea water

5. How can Iron be extracted

  • By Electrolysis
  • By heating Iron oxide strongly with carbon
  • By crushing and filtering

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