Effects of Oxidation Reactions in Everyday Life

Why do oils and fats become unfit for consumption if they are exposed to atmosphere for a long time?

Describe a process by which a copper spoon can be coated with silver.

Oils and fats react with oxygen and turn _____.

Iron nails are shiny when new but turn brown after being exposed to moist air. This is due to the formation of _____ iron oxide.

Name the term used to indicate the development of an unpleasant smell and taste in fat and oil containing foods due to aerial oxidation.

The process of slowly eating up of metals due to the attack of atmospheric gases on the surface of metals into oxides, carbonates, sulphide, etc., is known as _____.

Why do we apply paint on iron particles?

Explain the following term with one example.

• Rancidity

Explain the following term with one example.

• Corrosion

When silver is corroded what does it form?

When steam is passed through red hot iron, iron oxide and hydrogen is formed. The balanced equation is given below:

$3\mathrm{Fe}+4{\mathrm{H}}_2\mathrm{O}\to {\mathrm{Fe}}_3{\mathrm{O}}_4+4{\mathrm{H}}_2$

What is true for the balanced equation shown above?

When steam is passed through red hot iron, iron oxide and hydrogen is formed. The balanced equation is given below:

$3\mathrm{Fe}+4{\mathrm{H}}_2\mathrm{O}\to {\mathrm{Fe}}_3{\mathrm{O}}_4+4{\mathrm{H}}_2$

What is true for the balanced equation shown above?

Oxidation reactions have some harmful effects. Comment on the statement.