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2. Calcium Hydroxide can be used to make limewater. how?

  • Dissolve calcium hydroxide in water
  • Heat calcium hydroxide in liquid copper
  • Mix calcium hydroxide with magnesium in a furncace
  • Heat the calcium hydroxidee in a limekiln

3. What is a balanced equation for the thermal decomposition of calcium carbonate

  • CaCO2 -> CaO + C2O
  • CaCO3 -> CaO + CO2
  • CaCO3 -> 3cO2 + CO2
  • CaCO3 -> C2O + CO2

4. What is the main substance in limestone

  • copper carbonate
  • sodium carbonate
  • calcium carbonate
  • magnesium carbonate

5. What is thermal decomposition

  • When a substance is heated so much it disintorgrates
  • When a substance reaches 100 degrees centergrade
  • When a substance heats up and breaks down
  • When a substance is heated to its highest melting point
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