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Metal Reactivity

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Loz B

on 15 June 2011

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Transcript of Metal Reactivity

Metal Reactivity We know that magnesium was the most reactive, dissolving completely in acid.

However, there are metals that are SO reactive that they react violently in the presence of oxygen and water. Watch the clip on alkali metals and note what happens... But Wait!
What about Francium, the last alkali metal in group 1? Did you notice a pattern?

As you go down the periodic table, the metals become more reactive. We also have metals that are quite unreactive.

These unreactive metals can be found in their elemental form or native state. Can you think of any other metals that can be found in their native state in nature? If you said gold, silver and platinum you are correct!

The precious metals can be easily extracted because they don't form compounds with other elements. So we know that UNREACTIVE metals can
be found in their native state.

Would they be easy to extract and collect? No! They are not!

Reactive metals are likely to form compounds with other elements making it harder to extract. Magnesium

7th most abundant element in the Earth's crust

Never found free in nature

Extracted from minerals dolomite (CaCO3·MgCO3) and carnallite (KCl·MgCl2·6H2O)
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