< NCEA Level 1 Science
Chemicals in flasks (including ammonium hydroxide and nitric acid) lit in different colours.

Introduction

Chemistry has many uses in society.

Technological applications of chemistry


MetalaPhysical PropertiesReactivityUses
SodiumSoft, shinyExtremeToo reactive
CalciumHard, greyExtremeToo reactive
MagnesiumLight, malleableHighlyAlloys, flares
AluminiumShiny, malleableMildlyWindow frames
ZincShiny, malleableMildlyGalvanise nails
IronDense, conducts heatMildlyBridges
LeadGrey, denseUnreactiveBatteries, flashings
CopperThermal and electrical conductorUnreactiveWires
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