Science Class 5 Matter

Asked by AKSHAY GURU VARADHARAJAN · SRI CHAITANYA TECHNO SCHOOL, JAYANTI NAGAR.

Change of state of a substance is a change and is _.

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A Physical, reversible
B Chemical, reversible
C Physical, irreversible
D Chemical, irreversible

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Answer: A. Physical, reversible

Changing the state of a substance (such as melting ice into water or boiling water into steam) is a physical change because the chemical identity of the substance remains the same . These changes are reversible because you can return the substance to its original state by reversing the temperature change, such as freezing the water back into ice

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Change of state of a substance is a ________ change and is _________.

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Change of state of a substance is a change and is _.