Compounds

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1. What is electrolysis?

  • When you pass electricity through a metal. It seperates to non-metals from it.
  • Electrical current passed through a liquid called an electrolite. Seperates metals form non-metals.
  • An anode and a cathode.
  • Nothing.
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2. What elements are in Na2CO3?

  • 1 sodium, 1 carbon, 1 oxygen
  • 2 sodiums, 1 carbon, 3 oxygens
  • 2 sodiums, 3 carbons, 1 oxygen
  • 2 sodiums, 3 carbons, 3 oxygens

3. What elements in potassium chloride?

  • Potassium + chloride
  • Platinum + chlorine + chloride
  • Potassium + chlorine
  • Potassium + chlorine + oxygen

4. What is the phlogiston theory?

  • Every combustible material has phlogiston in. When it is burnt, it loses it.
  • When you burn a liquid and it gains mass . It is not true.
  • Nothing, it's not true.
  • Same as electrolysis.

5. What elements are in iron sulphate?

  • Oxygen + Iron
  • Iron + Sulphur + Oxygen
  • Iron + Sulphur
  • Iron

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