Question

two differences between the following: (4)

i) Physical change and chemical change.​

Answer 1

Answer:

whose Changes which can be reversed is called physical change ex- melting of ice

where has those changes which cannot be reversed is called chemical changes ex- burning of paper

Answer 2

Answer :

So, as per the provided question we are said to write the difference between physical and chemical changes..

So, first let's understand what is meant by physical and chemical changes..

◕ A change in the physical properties of a substance is called physical change.

◕ A change in the composition of chemical properties of a substance is called chemical change.

_________________________

Differences between physical and chemical changes are :

Physical changes :

• No new substances are formed in a physical change.

• Physical changes are temporary.

• Most of the physical changes are reversible.

• Examples :- Melting of wax, Hammering metals into sheets, etc..

Chemical changes :

• A new substance is formed in a chemical change.

• A chemical change is a permanent change.

• It is an irreversible change.

• Examples :- Formation of curd from milk, digestion of food, etc..

_________________________