C1 Limestone

HideShow resource information
Where is limestone from?
Quarries
1 of 26
What are the positives of limestone quarrying?
Building materials, the economy, old quarries->nature reserve
2 of 26
How does the economy get benefitted?
More jobs. Quarry worker spend money in shops=more jobs
3 of 26
What are the negatives of quarrying?
Sound pollution, dust pollution, vehicles, congestions
4 of 26
Give an example of quarrying sound pollution.
Explosions
5 of 26
Suggest how dust pollution affects people.
It makes asthma in asthmatics worse.
6 of 26
Suggest why vehicles are bad.
More petrol burning=>more carbon dioxide=>global warming
7 of 26
What type of reaction is thermal decomposition?
Endothermic
8 of 26
What is thermal decomposition?
Breaking down by heating
9 of 26
What is limestone's chemical name?
Calcium carbonate - CaCO3
10 of 26
Give the balanced equation of the thermal decomposition of limestone.
CaCO3 (+heat) --> CaO + CO2
11 of 26
What is limestone usually used for?
Cement, mortar and concrete
12 of 26
How do we make cement?
Limestone + Clay (heat in kiln) --> Cement
13 of 26
How do we make mortar?
Cement + Sand (+water) --> Mortar
14 of 26
How do we make concrete?
Cement + Sand + Gravel (+water) --> Concrete
15 of 26
What is concrete used for?
To make buildings
16 of 26
What is the equation for making calcium hydroxide?
CaO + H2O --> Ca(OH)2
17 of 26
As Ca(OH)2 is an alkali, what do we use it for?
Neutralising acids (eg/ acidic soil)
18 of 26
How do we make calcium hydroxide solution?
Add more water to the calcium hydroxide.
19 of 26
What is calcium hydroxide solution also known as?
Limewater.
20 of 26
What is limewater used for?
Testing for the gas CO2. Turns cloudy when CO2 is added.
21 of 26
How do we form calcium carbonate (CaCO3) from limewater?
Bubble CO2 though the limewater.
22 of 26
What do we get when we react a carbonate with an acid?
Carbonate + Acid-->Salt + Water + Carbon Dioxide
23 of 26
What is the salt? Calcium carbonate + hydrochloric acid.
Calcium chloride.
24 of 26
What are the three salt endings from the three acids?
H2SO4 - Sulfate, HCl - Chloride, HNO3 - Nitrate
25 of 26
What does the reaction often tell us?
That limestone buildings often break down from the acid.
26 of 26

Other cards in this set

Card 2

Front

What are the positives of limestone quarrying?

Back

Building materials, the economy, old quarries->nature reserve

Card 3

Front

How does the economy get benefitted?

Back

Preview of the front of card 3

Card 4

Front

What are the negatives of quarrying?

Back

Preview of the front of card 4

Card 5

Front

Give an example of quarrying sound pollution.

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all The limestone cycle resources »