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EleE07 Iron forms a magnetic and a non-magnetic oxide
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Many soils contains more
or less of magnetic iron ore (experiment
so 9). The most important iron ores are oxides: Magnetite
black blue, Hematite has the red colour of red iron oxide.
* Left:
Pure red iron oxide is not attracted by a magnet.
* Middle: The black
iron oxide formed by the combustion of iron oxide is magentic.
* Right: Dry red
soil from a place called Rotes Moor (Rhön) is powdered and stirred
by a magnet..
Observation:
The
magnet attracts black powder from the red soil even through a glass vial.
Explanation:
next
experiment.