Question

Classify the following as physical change or chemical change. (3)

i. Burning of magnesium ribbon in air

ii. Burning of sulphur in air

iii. Electrolysis of water

iv. Purification of copper sulphate from impure copper sulphate by crystallization

v. Preparation of sugar solution

vi. Conversion of milk into curd​

Answer 1

Answer:

chemical change – (i),(ii),(iii),(iv),(vi)

physical change – (v)

Answer 2

Answer:

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