Extracting metals Flashcards
(5 cards)
1
Q
What is oxidation in terms of oxygen?
A
Oxidation is a type of chemical reaction, where an
element or compound
gains oxygen atoms.
2
Q
What is reduction in terms of oxygen?
A
The loss of oxygen atoms from a substance during a chemical reaction.
3
Q
Why are gold and silver found by themselves?
A
They are chemically very stable and don’t readily react with other elements, meaning they don’t corrode or tarnish easily
4
Q
What is the use of carbon?
A
Carbon(non-metal) will displace a less reactive metals from their oxides, so they use it to extract some metals from their ores
5
Q
What is the use of hydrogen?
A
Where hydrogen reacts with iron oxides to produce iron and water vapor
