Introduction to Redox Reactions

A redox reaction is a chemical reaction where...

• oxidation occurs

• reduction occurs

• oxidation and reduction occurs simultaneously

• oxidation occur followed by reduction

Combustion reaction is an example of a redox reaction

• TRUE

• FALSE

Oxidation occurs when a substance gain electrons

• TRUE

• FALSE

In redox reaction, substance that undergo reduction is

• Reducing agent

• Oxidising agent

When a reactant loses hydrogen...

• reduction reaction occur

• oxidation reaction occur

• hydrogenation occur

• combustion occur

Reduction reaction occurs when a substance gain electrons

• TRUE

• FALSE

If Magnesium is a reducing agent, therefore Magnesium is...

• electron acceptor

• electron donor

In a reaction, Iron (II) Sulphate changed colour from green to brown. The reaction that occur is

• reduction of Fe2+ to Fe3+

• oxidation of Fe3+ to Fe2+

• reduction of Fe3+ to Fe2+

• oxidation of Fe2+ to Fe3+

Which of these chemical substances can be used as oxidising agent

• Potassium iodide

• Bromine water

• Iron (II) sulphate

• Zinc

The oxidation number of a substance in a reaction change from 0 to -1. The substance is

• reducing agent

• oxidising agent