Question

the some note on physical and chemical change​

Answer 1

Answer:

Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.

Answer 2

Physical change is a change which happens physically. Chemical change is a change which happens chemically.

Chemical nature of substances doesn't change when they change physically. Chemical nature of substances change when they change chemically.

Physical nature of substances change in both physical and chemical change, but chemical nature of substances change only in chemical change.

Eg of physical change: Melting of ice to form water.

Eg of chemical change: Combination of hydrogen gas and oxygen gas to form water.