NCEA Level 1 Science/Chemistry and society

thumb|250px|right|Chemicals in flasks (including ammonium hydroxide and nitric acid) lit in different colours. Introduction Chemistry has many uses in society. Technological applications of chemistry + Metala Physical Properties Reactivity Uses Sodium Soft, shiny Extreme Too reactive Calcium Hard, grey Extreme Too reactive Magnesium Light, malleable Highly Alloys, flares Aluminium Shiny, malleable Mildly Window frames Zinc Shiny, malleable Mildly Galvanise nails Iron Dense, conducts heat Mildly Bridges Lead Grey, dense Unreactive Batteries, flashings Copper Thermal and electrical conductor Unreactive Wires