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Chemistry CBSE Live product
Class 9 (2025-26)
Is matter around us pure?
Annual Revision II - Is matter around us pure?
5.
Physical and chemical changes
Question:
3
m.
Answer the following question briefly:
Classify the following as chemical or physical changes.
i.
Burning of paper and wood.
Both chemical and physical
Physical change
Chemical change
Reversible change
ii.
Dissolving common salt in water,
irreversible change
chemical change
physical change
both chemical and physical change
iii.
Burning of candle,
physical change
both physical and chemical change
chemical change
neither physical nor chemical change
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