Topic 4 - Metals and Redox (Paper 2)

Question 1

how are unreactive metals found?

Answer 1

uncombined, as they dont form compounds with other elements

Question 2

what is a metal ore?

Answer 2

a metal compound found in the earths crust, containing enough of the metal to make it worthwhile extracting

Question 3

how does reactivity of a metal affect extraction?

Answer 3

the more reactive a metal is, the harder it is to extract from a compound

Question 4

how are metals seperated from their oxides?

Answer 4

by a reduction reaction

Question 5

what is the most common type of reduction reaction?

Answer 5

using carbon as a reducing agent to seperate the oxygen from the metal

Question 6

which metals can be extracted by carbon?

Answer 6

metals which are less reactive than carbon, because more reactive elements form compounds more easily

Question 7

which metals cant be extracted by carbon and how are they extracted?

Answer 7

metals which are more reactive than carbon are extracted by electrolysis

Question 8

how is electrolysis used in extraction?

Answer 8

electricty seperated the metal from other elements in the compound