reactivity of metals

Question 1

,what is oxidation in reactions?

Answer 1

substance that gains oxygen

Question 2

waht is reduction in reactions?

Answer 2

a substance that loses oxygen

Question 3

w,hat is a displacement reaction?

Answer 3

a more reactive metal will displace a less reactive metalfrom a solution of its salt

Question 4

what is extraction of metals?

Answer 4

depends how reactive it is