Question

which is chemical and physical

a]adding sugar to water
b]lighting a candle
c]the souring of milk
d]freezing of water
e]stricking of a match stick
f]combustion of petrol in motor cars

Answer 1

a chemical

b physical

c chemical

d physical

e chemical

physical

Answer 2

PHYSICAL CHANGES:

• Adding sugar to water
• freezing of water

CHEMICAL CHANGES:

• Lightening a candle
• the souring of milk
• striking a match stick
• combustion of petrol in motor cars

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