Question

what are reversible and irreversible changes
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Answer 1

Answer:

Reversible changes - where a change is made physically and can be undone or reversed. For example: freezing water to make ice.

Irreversible changes - where the change is made chemically and can't be reversed into its original states. For example: baking a cake.

Explanation:

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Answer 2

Answer:

• A reversible change is a chemical change where no new materials are created and the original material can be recovered. Examples include freezing water to make ice or melting chocolate
• A change is called irreversible if it cannot be changed back again. In an irreversible change, new materials are always formed. Sometimes these new materials are useful to us.