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|[[File:CorrosionStatue.png|center|200px]]
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| style="height:20px; width:200px; text-align:center;" |The [[corrosion]] of [[Iron]] forms brown [[Iron Oxide]], known as [[Rusting|rust]]. [[Rusting]] happens more quickly in humid air or in [[Brine|salty water]].| style="height:20px; width:200px; text-align:center;" |The [[corrosion]] of [[Copper]] forms green [[Copper Carbonate]]. Initially the [[Copper]] is [[Oxidised]] to form [[Copper Oxide]], a black [[solid]], but then [[Chemical Reaction|reacts]] with [[Carbonic Acid]] to form [[Copper Carbonate]].
| style="height:20px; width:200px; text-align:center;" |This statue is made of [[Limestone]] which is mostly [[Calcium Carbonate]]. It is '''corroded''' by [[Acid Rain]] to form [[soluble]] [[salt]]s which wash away.
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===Preventing and Reducing Corrosion===