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Chemistry > C1.2 > Flashcards

C1.2 Flashcards

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1
Q

How do you make cement?

A

Limestone heated with clay

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2
Q

How do you make mortar?

A

Cement mixed with sand

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3
Q

How do you make concrete?

A

Mortar mixed with aggregate

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4
Q

What are the advantages of quarrying?

A

Produces valuable material

Creates employment in the area

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5
Q

What are disadvantages of quarrying?

A

Noise, dust, pollution

Spoils landscape

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6
Q

Calcium carbonate ->

A

Calcium oxide + carbon dioxide

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7
Q

MgCO3 ->

A

MgO + CO2

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8
Q

What are the names of carbonates that decompose?

A 
Calcium carbonate 
Copper carbonate 
Zinc carbonate 
Magnesium carbonate 
Sodium carbonate
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9
Q

Why are reactive metals (carbonates at the top of group 1) difficult to decompose?

A

They are more stable so require more heat to decompose them

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10
Q

Calcium oxide + water ->

CaO + H2O ->

A

Calcium hydroxide

Ca(OH)2

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11
Q

In the limestone cycle what does calcium carbonate lead onto?

A

Calcium oxide + carbon dioxide

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12
Q

In the limestone cycle what does calcium oxide + carbon dioxide lead onto?

A

Solid calcium hydroxide

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13
Q

In the limestone cycle what does solid calcium hydroxide lead onto?

A

Calcium hydroxide solution (limewater)

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14
Q

What is limewater also known as?

A

Calcium hydroxide solution

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15
Q

In the limestone cycle what does calcium hydroxide solution lead onto?

A

Calcium carbonate

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16
Q

Calcium hydroxide + Carbon dioxide ->

Ca(OH)2 + CO2 ->

A

Calcium carbonate + water

CaCO3 + H20

17
Q

CaCO3 + 2HCl ->

A

CaCl2 + H2O + CO2

18
Q

Metal carbonate + acid ->

A

Salt + water + carbon dioxide

19
Q

Calcium hydroxide + carbon dioxide ->

A

Calcium carbonate + water

20
Q

HEAT

Metal carbonate ->

A

Metal oxide + carbon dioxide

21
Q

What is limestone?

A

Calcium carbonate

22
Q

What is one thing limestone is used for?

A

Building things like statues

Chemistry (20 decks)

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