Reactivity of metals

Question 1

Metal oxides:

Answer 1

• metal + oxygen –> metal oxides

Question 2

Oxidation =

Answer 2

gain of oxygen

Question 3

Reduction =

Answer 3

loss of oxygen

Question 4

The reactivity series:

Answer 4

• when metals react with other substances, metal atoms form positive ions
• reactivity of a metal is related to tendency to form positive ions
• metals are arranged in order of reactivity
• a more reactive metal can displace a less reactive metal from a compound

Question 5

The reactitvity series order:

Answer 5

Potassium
Sodium
Lithium
Calcium
Magnesium
Carbon
Zinc
Iron
Hydrogen
Copper

Question 6

How are metals extracted?

Answer 6

• require chemical reactions
• metals less reactive than carbon can be extracted from their oxides by reduction with carbon