Core Chemistry Topics 3&4

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1. What is the electrolyte in electrolysis?

  • liquid containing the compound which conducts the electricity
  • the electricity source
  • the posts in the water that apply electricity to the electrolyte.
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2. What is the test for hydrogen?

  • bleaches damp litmus paper white
  • makes a squeaky pop with a lighted splint
  • relights a glowing splint

3. How do indigestion tablets work?

  • Contain bases like calcium carbonate to neutralise stomach acid
  • Kills bacteria in stomach
  • Replaces excess stomach acid with hydrochloric acid in tablet

4. What is the test for chlorine?

  • bleaches damp litmus paper
  • relights a glowing splint
  • makes a squeaky pop with a lighted splint

5. What method would be used to extract magnesium?

  • electrolysis
  • heating with carbon


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