1. Starter – in the back of your book  Where is Fe on the Periodic table?  Where does it fit in the reactivity series?  How would you extract it from its ore?

2. Objectives  To be able to list the properties of iron and how these relate to its use.  To be able to explain the chemical reaction of rusting in scientific terms;  To know how methods of rust prevention works.

3. Did you know?  Fe is the most widely used metallic element  The melting point is 1808K and Boiling Point is 3023K  Iron ore can contain sand and rock as impurities  It was the Chinese in the third century BC who realised that the addition of C to Fe, reduced the melting point

4. Iron Properties  List the physical properties of Fe.  List the Chemical properties of Fe.

5. Iron Properties  Conducts heat and electricity  Sonorous  Ductile and malleable  Lustrous  High melting point and boiling point  Reacts slowly with air when heated  Reacts reversibly with steam  Reacts well with dilute acids  Will displace Zn, Al, Mg, Ca, Na and K out of solution  Catalyst Physical PropertiesChemical Properties

6. You try:  For each property think of a use for Fe.

7. Uses of Fe  Conductor – Crocodile clips  Malleable – Paper clips  Lustrous – Bins  High Melting and Boiling Points – Drill bits  Catalyst – Haber Process, to make ammonia

8. Iron has problems  Fe is quite brittle, in comparison to other metals and rusts, so often alloys are used. You try: What is an alloy? Name an alloy of Iron.

9. Rust 1. What is Rust? Hydrated Fe 2 O 3 2. What do you need for rust to happen? Water and oxygen 3. How can rust be prevented? Painting, grease/oil, galvanising, sacrificial protection and alloying.

10. Task:  In your exercise book, detail what rust is, and how it can be prevented.

11. Classic Rusting Experiment Consider 4 nails in test-tubes with: 1. H 2 O open to the air; 2. in boiled H 2 O, then with a layer of oil on the surface; 3. CaCl 2 and sealed with a bung; 4. in NaCl (aq) open to the air. You try: predict what would happen to each nail after a week, and why you think this.