Redox Reaction

Question 1

What is OIL

Answer 1

Oxidation
Is
Loss (of electrons)

(Gain in oxygen)

Question 2

What is RIG

Answer 2

Reduction
Is
Gain (of electrons)

Loss of oxygen

Question 3

Metals reacting with oxygen

Answer 3

Metal + oxygen ~> metal oxide
Eg sodium + oxygen ~> sodium oxide

Question 4

Metals reacting with water

Answer 4

Metal + water ~> metal hydroxide + hydrogen
EG: Sodium + water ~> sodium hydroxide + hydrogen

Question 5

Metals react with acid

Answer 5

Metal + acid ~> salt + hydrogen
EG sodium + hydrochloric acid ~> sodium chloride + hydrogen

Question 6

How do the parts of the reactivity series react differently with oxygen?

Answer 6

Potassium~>tin = burn in oxygen

Lead~>silver = tarnish (metal oxide formed on surface) but do not burn

Gold & platinum = no reaction

Question 7

How do the parts of the reactivity series react differently with water?

Answer 7

Potassium~>magnesium = fizzes with cold water

Aluminium~>platinum = no reaction

Question 8

How do the parts of the reactivity series react differently with acid?

Answer 8

Potassium~>lead = fizzes

Copper~>platinum = no reaction