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Chemistry: C1 > C1.2 Limestone and Building Materials > Flashcards

C1.2 Limestone and Building Materials Flashcards

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1
Q

What compound is limestone mainly composed of?

A

Calcium Carbonate (CaCO3)

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2
Q

What products are made through the thermal decomposition of Calcium Carbonate?

A

Calcium Oxide and Carbon Dioxide

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3
Q

Other metal carbonates also decompose to make

A

Carbon Dioxide and a metal oxide

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4
Q

What does Calcium Oxide react with water to form?

A

Calcium hydroxide, an alkali which can be used in the neutralisation of acids. For example, it is used to neutralise acidic soil in fields

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5
Q

What is another name for Calcium Oxide?

A

Quicklime

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6
Q

What is another name for Calcium Hydroxide?

A

Slaked Lime

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7
Q

What is the name of the solution of calcium hydroxide in water?

A

Limewater

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8
Q

What does Calcium Hydroxide react with Carbon Dioxide to produce?

A

Calcium Carbonate

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9
Q

What can limewater be used to test for?

A

Carbon Dioxide

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10
Q

Carbonates react with acid to form what?

A

Carbon Dioxide, a salt and water

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11
Q

Other carbonates that react with acid are

A

Magnesium, Copper, Zinc and Sodium

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12
Q

Limestone is damaged by

A

Acid rain

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13
Q

When limestone is heated with clay it forms

A

Cement

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14
Q

When cement is mixed with sand it forms

A

Mortar

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15
Q

When cement is mixed with sand and aggregate it forms

A

Concrete

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16
Q

Limestone is great for making

A

Buildings

17
Q

Disadvantages of Quarrying Limestone:

A
  1. It creates huge ugly holes (eyesore) and permanently changes the landscape
  2. Makes lots of noise and dust
  3. Destroys habitats
  4. Transportation causes more noise and pollution
  5. Waste materials produce tips which are an eyesore
18
Q

Cement factories make a lot of

A

Dust, which can cause breathing problems for some

19
Q

Energy needed to produce cement and quicklime most likely comes from

A

Burning fossil fuels, which causes pollution

20
Q

Products of Limestone:

A
  1. Houses and roads
  2. Chemicals in Dyes, paints and medicines
  3. Neutralise acidic soil, lakes and rivers
21
Q

Advantages of Limestone Quarrying:

A
  1. Creates jobs

2. After quarrying, landscaping and restoration is normally required.

22
Q

Advantages of Limestone and its products:

A
  1. Widely available
  2. Cheaper than other materials
  3. Hard-wearing
  4. Limestone is attractive
  5. Doesn’t rot
  6. Fire resistant
  7. Concrete doesn’t corrode
23
Q

Disadvantages of Limestone and its products:

A
  1. Concrete is unattractive
  2. Concrete has a low tensile strength
  3. Concrete can crack

Chemistry: C1 (7 decks)

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