Extracting Metals Flashcards
1
Q
what is an ore
A
when there is enough metal/metal compound in a rock which can then be mined
2
Q
why do some ores have to be concentrated?
A
so the metals can be extracted and purified
3
Q
how to extract copper compounds from copper ores
A
the ore is ground up into a powder
then mixed with water
a chemical is added that makes the copper repel water
air is bubbled through the mixture and the copper compound floats on the top
4
Q
How to decide if it is worth extracting a particular metal
A
how easy it is to extract it
how much metal the ore contains
5
Q
define native state
A
where a metal is unreactive enough to be found as the metal in the ground
6
Q
two examples of native state metals
A
gold Au and silver Ag
