Chemistry 1A - Products from Rocks: Limestone

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Where does limestone come from?
It is quarried out of the ground.
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What is limestone mainly used for?
As a building material.
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What is the chemical formula for Calcium Carbonate?
CaCO3.
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What two products will you get when you thermally decompose calcium carbonate?
Calcium Oxide and Carbon Dioxide.
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What is the symbol equation for the thermal decomposition of limestone?
CaCO3 = CaO + CO2
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What is the word equation for the thermal decomposition of limestone?
Calcium Carbonate = Calcium Oxide + Carbon Dioxide
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Which four other carbonates will decompose in the same way as calcium carbonate to produce ________ oxide and carbon dioxide
Magnesium, Copper, Zinc and Sodium.
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What is the word equation for the reaction of Calcium Carbonate with an acid? (Use Sulfuric acid in your example.)
Calcium Carbonate + Sulfuric Acid = Calcium Sulfate + Carbon Dioxide + Water
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Name four other carbonates that react with acids.
Magnesium, Copper, Zinc and Sodium.
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What is the product of a reaction between calcium oxide and water?
Calcium Hydroxide.
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What is the word equation for the reaction of calcium oxide and water?
Calcium Oxide + Water = Calcium Hydroxide.
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Calcium Hydroxide is an ________, in terms of the pH scale.
Alkali.
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Calcium Hydroxide can be used to do what?
Neutralise acidic soil in fields.
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What happens if you mix calcium hydroxide with water?
It makes a solution called limewater.
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Limewater can be used as a test for the presence of which gas?
Carbon Dioxide.
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If you bubble gas through limewater, the solution will turn cloudy if the gas is what?
Carbon Dioxide.
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What is the word equation for the carbon dioxide + limewater test?
Calcium Hydroxide + Carbon Dioxide = Calcium Carbonate + Water
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Limestone can be heated with A) _______ to make B) _______
A) Clay B) Cement
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Cement can be mixed with ______ and water to make ________.
A) sand B) mortar
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What is mortar used for?
To stick bricks together.
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You can mix cement with sand and ______________ to make __________.
A) aggregate B) concrete.
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Quarrying is used to retrieve limestone from the ground. What are five negative effects of quarrying?
1. It makes large holes in the landscape, scarring it for ever. 2. It involves blasting rock, which causes noise and dust. 3. It destroys homes of animals 4. Transportation lorries cause noise and pollution. 5. Waste materials produce unsightly tips.
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Cement factories can create a lot of what?
Dust.
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Energy is needed to produce cement. Where is this energy likely to come from?
Burning fossil fuels, which causes pollution.
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Name four positive effects of quarrying limestone.
1. Limestone provides things like houses, roads. Dyes, paints, medicines also come from limestone. 2. It is used to neutralise acidic soil. 3. It is used to neutralise sulfur dioxide. 4. The quarry provides jobs for people.
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Limestone can be damaged by what?
Acid rain.
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What metal product is used to make concrete stronger?
Steel bars.
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Other cards in this set

Card 2

Front

What is limestone mainly used for?

Back

As a building material.

Card 3

Front

What is the chemical formula for Calcium Carbonate?

Back

Preview of the front of card 3

Card 4

Front

What two products will you get when you thermally decompose calcium carbonate?

Back

Preview of the front of card 4

Card 5

Front

What is the symbol equation for the thermal decomposition of limestone?

Back

Preview of the front of card 5
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