Thermal decomposition
This is the breakdown of a substance using heat.
1.
Copper carbonate
Copper carbonate is green when it thermally decomposes it turns black as copper oxide forms.
Copper Carbonate  Copper
Oxide + Carbon dioxide.
Symbol equation:
Draw the apparatus used. (leave 10 lines)
Reaction of Copper II Carbonate with acid
Copper carbonate reacts with dilute sulphuric acid to form copper sulphate solution, carbon dioxide and water.
Note your observations (leave 10 lines)

2.
Limestone thermally decomposing (Calcium
Carbonate)
Calcium Carbonate  Calcium Oxide + Carbon dioxide
Calcium oxide is a white solid.
Draw the apparatus used. (leaves 10 lines)
Observations when a small amount of water is added

Solid crumbles

Steam evolves

Reaction is very exothermic
Calcium Oxide + water

calcium Hydroxide

If even more water is added the calcium hydroxide forms LIMEWATER
This is used to test for the presence of CO2
CaCO
3

CaO + CO
2
ADD LITTLE WATER
add Ca(OH)
2
CO
2
ADD MORE WATER
Ca(OH)
2
LIMEWATER