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|[[File:RustingPipe.png|center|300px]]
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| style="height:20px; width:300px; text-align:center;" |These gears were shiny but the [[Iron]] has '''rusted'''.
| style="height:20px; width:300px; text-align:center;" |This pipe was painted to stop it [[rusting]] but where the paint has been damaged the [[Iron]] has started to '''rust'''.
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===Experiments===
: Place 5 [[Iron]] nails in different conditions in sealed containers.
: 1 nail in a test tube with a small amount of water and air.
: 1 nail in a test tube with a small amount of salty water and air.
: 1 nail in a test tube with air and some dry rice to keep the air dry.
: 1 nail in a test tube full of water to keep the nail submerged.
: 1 nail wrapped in plasticine to stop any water or air getting to it. (Dipped in wax will also work).