What is a mineral?
A mineral is (generally) an inorganic, naturally occurring, organized crystalline structure composed of a single chemical compound or element.
What is a rock?
A rock is (generally) a natural solid composed of multiple crystals of one or more minerals. Although many rocks contain visible crystals of individual minerals, a rock itself does not have an overall crystalline structure.
Where do metals come from?
Most pure metals, like aluminium, silver and copper, come from the Earth’s crust. They are found in ores – solid materials called minerals, usually occurring in rock, from which the pure metal has to be extracted. The properties of pure metals can be improved by mixing them with other metals to make alloys.
Metals are often divided into:
ferrous metals, which have iron in them (for example mild steel, carbon steel and cast iron)
non-ferrous metals, which don’t have iron in them (for example copper, aluminium, tin and lead).
What is a Metal?
What is a Metal Detector?
What are some applications of metals?
Material Type
|
