metals and extraction

1. Do now!
Why do you think
I’ve put carbon in
the series??

2. Last lesson
• Displacement reactions of ions in solution

3. Displacement reactions
zinc magnesium copper lead
Zinc
sulphate X X X
Magnesium
sulphate X X X X
Copper
sulphate X
Lead
nitrate X X

4. A more reactive metal will displace
a less reactive metal from solution
Iron(s) + silver nitrate(aq) silver(s) + iron nitrate(aq)
Can you copy
carefully
please?

5. Today’s lesson
• Extraction of metals from their ores related
to the reactivity series
• Uses and properties of metals

6. Ores
Most metals are found naturally in rocks
called ores. They are in compounds,
chemically bonded to other elements
iron ore

7. Native
Some unreactive metals can be found as
elements. They are called native metals.

8. Roasting
Some unreactive metals can be extracted
from a compound simply by heating. This
is called roasting.

9. More reactive metals?
• Zinc, iron, tin, lead

10. Extracting metals with carbon
Carbon is higher
than some metals in
the reactivity series.
It can be used to
extract medium
reactive metals.

11. Extracting metals with carbon
lead oxide + carbon lead + carbon dioxide
2PbO(s) + C(s) 2Pb(s) + CO2(g)

12. Extracting metals with carbon
lead oxide + carbon lead + carbon dioxide
2PbO(s) + C(s) 2Pb(s) + CO2(g)
carbon is oxidised
lead oxide is
reduced

13. The Blast furnace
1000°C
1500°C
1900°C
Iron ore (haematite),
coke (carbon) and
limestone (calcium
carbonate)
Hot waste gases (recycled to
heat furnace)
Blasts of hot airBlasts of hot air
Molten iron
YouTube
- Steelmaking: Blast Furna

14. More reactive metals?

15. Electrolysis of aluminium oxide
CO2

16. Let’s extract a metal!

17. Carbon + copper oxide copper + carbon dioxide

18. Let’s extract a metal!
TEST next Friday 9th
October on the
“metals” topic
(everything we have
done so far except
Space and gravity)

19. Uses of metals

20. Gold
Unreactive, malleable and a good
conductor of electricity
Jewelry, wires in computers, gold leaf

21. Aluminium
Light, and a very unreactive oxide layer
forms over the reactive metal means it
does not corrode
Aircraft, cars, cutlery etc.

22. Steel (mainly iron)
Strong, fairly cheap.
Building

23. Copper
Ductile, unreactive and a good conductor
Saucepans, wires etc.

24. Let’s go for a walk!
Looking for uses of metals