1
Question
How many images involve a chemical change?
- 2
- 2
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Solution
The correct option is A 2
Image 1 shows sublimation of dry ice. It is a physical change as the chemical composition of the substance does not changes during sublimation.
Image 2 shows chopping of strawberry. It is a physical change as chopping does not alter the chemical composition of strawberry.
Image 3 shows burning of wood. Burning always involves a chemical change.
Image 4 shows rusting of an iron chain. It is a chemical change as the rust formed is a new substance.
Image 5 shows crystallisation of sugar. It is physical change as no new substance is formed.
Image 1 shows sublimation of dry ice. It is a physical change as the chemical composition of the substance does not changes during sublimation.
Image 2 shows chopping of strawberry. It is a physical change as chopping does not alter the chemical composition of strawberry.
Image 3 shows burning of wood. Burning always involves a chemical change.
Image 4 shows rusting of an iron chain. It is a chemical change as the rust formed is a new substance.
Image 5 shows crystallisation of sugar. It is physical change as no new substance is formed.
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