NCEA Level 1 Science/Chemistry and society

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Chemicals in flasks (including ammonium hydroxide and nitric acid) lit in different colours.

Introduction[edit]

Chemistry has many uses in society.

Technological applications of chemistry[edit]

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