Limestone

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

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

  • Heat the calcium hydroxidee in a limekiln
  • Dissolve calcium hydroxide in water
  • Mix calcium hydroxide with magnesium in a furncace
  • Heat calcium hydroxide in liquid copper
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2. What is the main substance in limestone

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

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

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

4. What is thermal decomposition

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

5. What is the main substances fomula

  • CAco3
  • CaCO3
  • 3CoCa
  • CACO3
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