Question

State whether the given statements is true or false: When a candle burns, both physical and chemical changes take place.

• A. True
• B. False

Answer 1

The correct option is A True

Physical change

• A type of change in which the physical properties of a material change.
• Changes in shape, state of matter, color, density, size, odor, solubility, etc. are considered physical changes.
• During this change, only the physical traits of the substances are changed, i.e no chemical aspects of a substance change.

Chemical change

• A substance is said to undergo a chemical change when its chemical properties of a substance changed.
• This results in there are either formation or breaking of atomic bonds at the molecular level.
• When a candle burns, both physical and chemical changes take place.

Changes during the burning of the candle

• Melting of wax is a physical change.
• During this change, only the physical traits of the substances are changed.
• Whereas burning of wax produces carbon dioxide which is a chemical change.
• As a substance is said to undergo a chemical change when the chemical properties of a substance alter.
• As a result, there is either formation or breaking of atomic bonds at the molecular level.

Hence the statement is true.