Question

write difference between physical and chemical changes with example​

Answer 1

Answer:

Physical Changes are those changes in which molecular composition of substance is not changing chemically but a new substance is formed.

Example- melting of wax.

Chemical changes are those in which molecular composition of changed chemically like dissolving salt in water.

Answer 2

Explanation:

carbon + oxygen — carbondioxide.

we cannot reverse carbondioxide into carbon and oxygen.while in physical change are reversible.

example. melting of wax