Chemistry 1 Revision: C2 limestone and building materials
Task 1: Use the revision guide to produce a mini mind map or bullet point summary for the following key areas on this topic.
Task 2: Practise past questions and assess using the mark scheme
Formation of limestone and Quarrying
buildings cement compressed dust eyesore glass
habitats iron jobs lake limestone money neutralising
noise ocean quarries reservoir roads shells traffic
Chemical reactions of limestone
acids acid rain
carbon dioxide
oxide similar
Bunsen burner calcium carbonate carbonates
cloudy hydroxide limewater neutralisation
temperatures thermal decomposition water
Limestone was formed from the s………………… of sea creatures. When
Calcium carbonate breaks down when heated – this is known as
they died they fell to the bottom of the o………………. Over time
t…………………………. d…………………………………………..:
CaCO3

CaO
+
Complete the word equation for this process:
these remains became c…………………………. and formed the sedimentary
rock, l……………………………. It is obtained from q…………………. by blasting.
Disadvantages of quarrying
d…………. / atmospheric pollution
n……………..
e…………………….
destroys h……………………..
increased t………………………..
Advantages of quarrying
j………………… for local people
CO2
calcium carbonate → calcium o………………… + c…………….. d……………….
The c……………………………… of magnesium, copper, zinc, calcium and
sodium decompose on heating in a s………………………… way to give
carbon dioxide and the metal oxide. Not all metal carbonates break
down at the t…………………………………. reached by a B………………. b……………..
Calcium oxide reacts with water to produce calcium hydroxide:
CaO
+
H2O

Ca(OH)2
Complete the word equation for this process:
calcium o……………………… + w………………… → calcium h……………….…….
increases local trade / makes m…………….
Calcium hydroxide is an alkali that can be used in n………………………………
future development of quarry e.g. as park / l……… / r…………………..
of a……………. A solution of calcium hydroxide in water is called
limestone is an important resource – used in b…………………….. and
l……………….………….. This is used as a test for c….……….…… d…………………..
r……………, as a raw material for making other materials e.g.
because when the gas is bubbled through the solution the
g………………., c………………………………, extraction of i…….…….. in the
l…………………………….. turns c………………………. as solid calcium carbonate
blast furnace, n…………………………………………. acid soils
is formed:
Limestone as a building material
abundant acid rain appearance building
calcium carbonate cement clay cut mortar natural
poured reactive reinforced sand
Limestone is mainly composed of the compound c………………….
c…………………………… CaCO3. Limestone can be used as a b………………………
material.
Advantages of limestone as a building material:
• n…………………………. material – no ‘processing’ needed
• relatively easy to c………..
• a……………………………….. better than concrete
• raw materials are a…………………………
Limestone is heated with c………… to make c………………………. Cement is
Ca(OH)2 + CO2

CaCO3
Complete the word equation for this process:
calcium
h………………………
c…………………
+
d………………
→
Advantages of concrete as a building material:
• can be r…………………………… by steel rods to make it stronger
• concrete mixture can be p…………………. / moulded / made on site
H2O
c…………………
c………..……….…….
+
w…….……
Carbonates react with a…………. to produce c………………… d………………….,
a salt and w……………... This reaction is an example of n…………………………
and explains why limestone is damaged by a…………. r…………:
CaCO3 + H2SO4 → CO2 + CaSO4 + H2O
Complete the word equation for this process:
calcium
+
sulphuric
c………………………
acid
ADD CARBON
DIOXIDE
→
c…………………
d………..……….
Limestone
calcium carbonate
mixed with s………………. to make m……………………. and with sand and
a………………………… to make concrete.
+
Limewater
calcium hydroxide
solution
calcium
+ sulphate + w………
HEAT
CO2
calcium oxide
ADD
WATER
• less r…………………… with a…..…… r……… / weathering than limestone
ADD MORE WATER
AND FILTER
calcium hydroxide