Limestone

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  • Created by: ewaldr19
  • Created on: 25-05-15 10:48

1. 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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2. What is the balanced equation for the reaction of calcium oxide and water to produce calcium hydroxide

  • CaO + H2O -> Ca(OH)2
  • COA + 2HO -> CA(OH)2
  • CaO + HO2 -> Ca(oh)2
  • CAO + H2O -> CA(OH)2

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

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

4. 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

5. What is the main substance in limestone

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

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