Question

c) Find the missing words in the given sentences and rewrite the sentences again:

1. A physical change is not accompanied by evolution or absorption of heat.

2. Changes which occur periodically at a interval of time are called periodic change.

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Answer 1

Answer:

A physical change is usually not accompanied by evolution or absorption of heat.

Changes which occur periodically at a same interval of time are called periodic changes.

Explanation:

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