Chemistry Unit C1 Worksheet - Study And Revision Pack (Foundation Paper) Page 11
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34Q2.
Rocks
(a) Limestone, chalk and marble are types of rocks.
Limestone, chalk and marble all contain the compound calcium carbonate.
(i) What is the formula of calcium carbonate?
Put a cross ( ) in the box next to your answer.
(1)
A CaC
B CaCO
C CaCO
3
D CaC
O
3
(ii) Marble is a metamorphic rock.
Describe how marble is formed.
(3)
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(b) Granite is an igneous rock.
The pictures show two different samples of granite, granite A and granite B.
Granite is formed from molten rock.
Explain why different samples of granite may have different sized crystals.
(2)
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