Question

Classify the changes involved in the following processes as Physical, Chemical or both.
a) Burning of Coal
b) Melting of Wax
c) Beating Aluminum to make Aluminum foil
d) Digestion of food
e) Boiling of Egg
f) Photosynthesis
g) Cutting of Wood

Answer 1

Heya HERE is your answer

chemical

Physical

Both

Chemical

Chemical

Chemical

Physical.

HOPE IT helps you

Answer 2

Dear Student,

◆ Answer -

Physical changes -

• c) Beating Aluminum to make Aluminum foil
• g) Cutting of Wood

Chemical changes -

• a) Burning of Coal
• f) Photosynthesis

Physical and chemical changes -

• b) Melting of Wax
• d) Digestion of food
• e) Boiling of Egg

● Extra information -

• In physical change, composition of substances remains same after.
• It is reversible change. For example, boiling of water.
• In chemical change, composition of substance changes.
• It is irreversible change. For example, rusting of iron.

Thanks dear. Hope this helps you...