Question

define physical and chemical change with two examples​

Answer 1

Answer:

Physical change is change that deals with changes in the physical structure of the object and does not change its chemical composition.

For example : Melting of wax,Tearing of paper

Chemical Changes are the changes that impact the chemical composition of the object and may or may not change its physical state

For example : Burning of wood, Reaction of Sulphuric Acid with Zinc

Answer 2

Explanation:

The change which can be reversed by reversing the condition is called a physical change

Ex.Streching of rubber bands

The change which cannot be reversed even by changing the condition is called the chemical change

Ex.