NCEA Level 1 Science/Chemistry and society
![](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Chemicals_in_flasks.jpg/250px-Chemicals_in_flasks.jpg)
Introduction
editChemistry has many uses in society.
Technological applications of chemistry
editMetala | 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 |