-Metals are found in the Earth's crust
-Most metals are found combined with other chemical elements, often oxygen
-This means that the metal must be chemically seperated from its compound before you can use it
-In some places, there is enough of a metal or metal compound to make it worth extracting, this rock is called a metal ore
-Whether it's worth extracting a metal ore depends on;
- how easy it is to extract it from its ore
- how much metal the ore contains
-A few metals, such as gold and silver, are so unreactive they are found in the Earth as the metals (elements) themselves.
-These are known to be found in their native state
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