1) Name the three types of rock.
Answer
Sedimentary
Metamorphic
Igneous
C1 TOPIC 2
M. Rahman
2) Name two examples of sedimentary
rocks. (2)
Answer
Limestone
Chalk
Sandstone
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M. Rahman
3) Describe some features of
sedimentary rocks (2)
Answer
• Contain fossils
• are layered
• easily broken away by wind, rain
and waves
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M. Rahman
4) Describe how sedimentary rocks
are formed? (4)
Answer.
• Formed from layers of sediments
(silt, animals, plants).
• Over millions of years pressure
from layers above,
• squeezes out the water and
compresses them.
• Finally cemented together
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M. Rahman
5) How are metamorphic rocks
formed? (3)
Answer.
• Formed by action of heat
•
and pressure.
• Formed from sedimentary rocks
(or igneous).
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M. Rahman
6) Give an example of metamorphic
rock and what is formed from.
Answer
• Marble formed from,
• Limestone or chalk
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M. Rahman
7) Name the two types of igneous
rocks giving examples. (2)
Answer
Extrusive eg; basalt
Intrusive eg; Granite
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M. Rahman
8) Describe the difference between
in appearance between extrusive and
intrusive igneous rocks.
• Intrusive rock: Contain large
crystals
• Extrusive rocks: Contain small
crystals
C1 TOPIC 2
M. Rahman
9) Describe how extrusive igneous
rocks are formed (2).
Molten magma pushes out of crust, cools
quickly, above ground, forming small
crystals
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M. Rahman
10) Describe how intrusive igneous rocks
are formed (2).
a) Molten magma pushes up into
the crust, cools slowly
underground forming big crystals
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M. Rahman
11) Give some uses of limestone (3)
Answer
1) Building material, bricks, cement and concrete
2) Making glass
3) Neutralising of acidic soil and rivers due to
acid rain
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M. Rahman
12) Describe how cement is made (2).
Answer
Limestone heated in a kiln with
powdered clay
.
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M. Rahman
13) How is concrete made ?
Answer
Mix cement with sand, water and
gravel
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M. Rahman
14) How is glass made?
Answer
Heat, sand and sodium carbonate
until it melts.
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M. Rahman
15) Describe some of the problems with
quarrying limestone. (4)
Answer
1)
Makes ugly holes permanently effecting the scenery.
2)
Noise pollution from explosions and transporting
limestone.
3)
Destroys habitats.
4)
Dust pollution explosion pollution from.
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M. Rahman
16) Give some advantages of quarrying
limestone. (3)
Answer
• Provides products like houses, roads, paints and medicine.
• Used to neutralise acidic soil and water ways.
• Used in power station chimneys to neutralise acidic gases (SO2 which
causes acid rain).
• Brings money, jobs and local improvements (e.g roads) into the local
environment.
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M. Rahman
17) What is the name of the chemical
that limestone is made from (2).
Answer
Calcium carbonate
.
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M. Rahman
18) What is the chemical formula of
calcium carbonate?
Answer
CaCO3
.
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M. Rahman
19) When calcium carbonate is heated
it is thermally decomposed into what
two products. (2)
Calcium Oxide + Carbon dioxide
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M. Rahman
20) What is the word equation for the
thermal decomposition calcium
carbonate? (2)
Answer
Calcium Carbonate ---Calcium Oxide + CO2
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M. Rahman
21) What is the balanced equation for
the thermal decomposition calcium
carbonate? (2)
Answer
CaCO3 ----- CaO + CO2
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M. Rahman
22) What are the balanced symbol
equation for the thermal
decomposition of
a) Copper Carbonate
b) Zinc Carbonate
Answer
a) CuCO3 ----- CuO + CO2
b) ZnCO3 ----- ZnO + CO2
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M. Rahman
23) How is thermal stability of
different metal carbonates
determined? (3)
Answer (any of the three following point)
• Heat the carbonate in a boiling tube,
• Pipe off the gas given off (CO2) into limewater.
• The CO2 will turn the limewater milky.
• Least stable carbonate will decompose faster and
the lime water will turn milky more quickly.
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M. Rahman
24) How is Calcium hydroxide
formed?
Answer
Add water to calcium oxide
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M. Rahman
25) How is Limewater produced from
calcium hydroxide?
Answer
• Dissolve calcium hydroxide
(solid) in water.
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M. Rahman
26) What is the conservation of
mass?
Answer
• A reaction conducted in a sealed
tube, the total mass before and
after the reaction do not change.
C1 TOPIC 2
M. Rahman
27) What is the formula for the following
acids
a) Hydrochloric acid
b) Sulphuric acid
c) Nitric Acid
Answer
a) HCl
b) H2SO4
c) HNO3
C1 TOPIC 2
M. Rahman