Metallurgy

The idea

Metallurgy is the extraction of metals from their ores and their refining; extraction involves several steps, and metals of low, medium and high reactivity each need different techniques.

Ore to metal

A lump of ore has to become a pure metal that can be used.

Is it done in one step?

• No, there are several steps
• Yes, in a single step
• It needs no steps at all

Steps of metallurgy

Press Next step.

Reactivity chooses the method

Getting a metal from its ore takes several steps, then the metal is refined. All of this is metallurgy. Metals of low, medium and high reactivity each need a different technique for extraction.

Metallurgy is the extraction of metals from their ores and their refining; extraction involves several steps, and metals of low, medium and high reactivity each need different techniques.

Notes

Metallurgy: extraction of metals from ores and refining; metals of low, medium and high reactivity need different techniques.

Check yourself

The extraction of metals from their ores and then refining them is called ...

Into how many groups does the book put metals by reactivity?

What decides the technique used to obtain a metal from its ore?

• metallurgy — correct. Yes!
• corrosion. Corrosion is the damage to a metal exposed to moist air, as in rusting.
• galvanisation. Galvanisation is coating iron or steel with zinc.
• Two: reactive and unreactive. The book groups them into three categories: low, medium and high.
• Three: low, medium and high reactivity — correct. Yes!
• Four: low, medium, high and very high. The book groups metals into three categories: low, medium and high.
• The colour of the metal. The book says different techniques are used for metals of low, medium and high reactivity.
• The size of the lump. The book says different techniques are used for metals of low, medium and high reactivity.
• The reactivity of the metal — correct. Yes!