Question

write an example of a change of where a gas is evolved is it a chemical change or physical change​

Answer 1

A change where a gas is evolved is an example of a chemical change.

Explanation:

• this is because most of the chemical processes are irreversible. Similarly evolving a gas from a solid is also an irreversible process.
• In addition to this the gas that is liberated is is formed by The breakdown or creation of new bond in the original structure of the compound. There is no change in the chemical bond in case of a physical change and as a result of this it is a chemical change

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Answer 2

Answer:

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