During burning of a candle, both physical and chemical changes take place
During burning of a candle, both physical and chemical changes take place
The correct option is A True
Physical changes: Changes which involve only physical properties like colour, physical states etc., keeping the chemical identity of the substance same and no new substances are formed here.
Examples: Boiling of water, Stretching of rubber band.
Chemical changes: Change which involves a change in chemical properties and a new substance is formed. it also involves energy change, heat change etc.,
Examples: Rusting of iron, Ripening of fruits.
Burning of a candle involves both physical and chemical changes, i.e., melting of wax is a physical change and burning of thread and wax involves chemical changes as it gives off light and heat.
Thus, the given statement is true, i.e.., during the burning of a candle, both physical and chemical changes take place.
Physical changes: Changes which involve only physical properties like colour, physical states etc., keeping the chemical identity of the substance same and no new substances are formed here.
Examples: Boiling of water, Stretching of rubber band.
Chemical changes: Change which involves a change in chemical properties and a new substance is formed. it also involves energy change, heat change etc.,
Examples: Rusting of iron, Ripening of fruits.
Burning of a candle involves both physical and chemical changes, i.e., melting of wax is a physical change and burning of thread and wax involves chemical changes as it gives off light and heat.
Thus, the given statement is true, i.e.., during the burning of a candle, both physical and chemical changes take place.
