1. Do Now 1.Write the word equation for the reaction of calcium and water Calcium + water  calcium hydroxide + hydrogen 2.Write the word equation for the reaction of magnesium and sulfuric acid Magnesium + sulfuric acid  Magnesium sulfide + Hydrogen 3.Write the word equation for the reaction of zinc with oxygen Zinc + oxygen  Zinc oxide

2. Chemistry of metals continued

3. Summary metal + oxygen  metal oxide metal + water  metal hydroxide + hydrogen metal + acid  salt + hydrogen Pop test – if hydrogen is present, a squeaky pop would be heard if a flame is introduced Usually metals that react quickly with oxygen also react quickly with water and acids.

4. Activity and uses of metals Active metals like Na, Li, Ca, Mg aren’t used to make things. Common metals like Al, Zn, Fe, Pb, Cu are used to make lots of different objects. Precious metals like Ag, Au are only used in valuable objects.

5. Revision Write the formulae for the following compounds (Use your table of ions!!): E.g. Sodium Chloride - Na + Cl -  NaCl Calcium carbonate Aluminium oxide Iron sulfide Copper sulfate Zinc chloride Ca 2+ CO 3 2- CaCO 3 Al 3+ O 2- Al 2 O 3 Fe 2+ S 2- Cu 2+ SO 4 2- CuSO 4 Zn 2+ Cl - ZnCl 2

6. Quiz (Back of book) 1.What does the nucleus (centre) of an atom contain? 2.How do atoms become stable? 3.What does malleable mean? 4.What does ductile mean? 5.What does sonorous mean? 6.What is an alloy? 7.Give an example of an alloy and its use. 8.Why are alloys useful?