How can you use Limewater to test for Carbon Dioxide?
If Carbon Dioxide is bubbled through Limewater it forms insoluble Calcium Carbonate. This turns the Limewater milky/cloudy.
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What can be used to neutralise acidic compounds?
Calcium Carbonate, Calcium Oxide and Calcium Hydroxide.
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How and why do farmers deal with acidic soils?
If the soils are too acidic crops don't grow too well so farmers spray powdered Calcium compounds to reduce or neutralise the acidity in the soil.
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Why do waste gases in powers stations need to be neutralised?
Coal fired power stations release Sulphur Dioxide and Nitrogen Oxides which are acidic gases. If they are released into the atmosphere they can cause acid rain.
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How are waste gases in powers stations neutralised?
Wet, powdered clay is sprayed onto the waste gases to neutralise them.
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Other cards in this set
Card 2
Front
What happens when water is added to Calcium Oxide?
Back
A lot of heat is released and it crumbles to a white powder of Calcium Hydroxide.
Card 3
Front
What reactions can you see happening to the Calcium Oxide?
Back
Card 4
Front
What happens if you add more water to the reactants.
Back
Card 5
Front
What are Calcium Carbonate, Calcium Oxide and Calcium hydroxide also known as?
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