Quiz Chemistry Form 5 (March)

How many types of redox reactions

• 6

• 3

• 5

• 4

All listed are redox reactions except

• Gain or loss of oxygen

• Gain or loss of hydrogen

• Transfer of electrons

• Change in reduction number

in redox reactions in term of gain and loss of oxygen, oxydation reaction takes place when reactant

• Gains oxygen

• Gain hydrogen

• Loss oxygen

• Loss hydrogen

In terms of gain and loss of hydrogen, reduction reaction takes place when

2NH₃ (g) + 3CuO (s) ------ N₂ (g) + 3Cu (s) + 3H₂O (l)

Identify Oxidised sustance

2NH₃ (g) + 3CuO (s) ------ N₂ (g) + 3Cu (s) + 3H₂O (l)

Identify reduction substance

State definition of reduction in terms of electron transfer

Redox reaction in terms of electron transfer will have

• Chemical equation

• Half equation

• equilibrium equation

• Redox equation

Write the definition of redox reaction

Write 1 example of redox reaction