Chapter 9, Problem 1CQ

To determine

The difference between the physical change and chemical change with three examples of each.

Answer to Problem 1CQ

The difference between the physical change and chemical change with examples of each is tabulated below.

Explanation of Solution

The difference between the physical change and chemical change is tabulated below.

Physical Change	Chemical Change
In a physical change, only the physical properties such as color, physical state, density volume etcetera changes and the chemical properties remain unchanged	In a chemical change, the chemical composition and chemical properties change.
New substance is not formed in a physical change.	A new substance is formed in a physical change.
Very little or no energy in the form of heat or light is usually absorbed or released in a physical change.	A chemical change is always accompanied by the absorption or evolution of energy.
A physical change is a temporary change.	A chemical change is a permanent change.
The original form of substance can be regained by simple physical methods.	The original substance cannot be obtained by simple physical method.
Examples: Dissolving sugar in water. Melting of ice cube. Breaking a bottle.	Examples: Burning of wood. Mixing of acid and base. Digesting food.