Question

write one reaction of each man made change​

Answer 1

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• Examples of natural changes are growth in man and seasonal changes and examples of man-made changes are burning of fuels and chemical reactions.

Answer 2

Answer:

Combination reaction:

Combination happens when two or more substances combine together in a chemical reaction to form one or more different substances.

Examples are corrosion of metals, burning of wax.

Decomposition reaction:

Decomposition, the opposite of combination, occurs when a single substance breaks down into two or more different substances.

Example is decomposition of water into hydrogen and oxygen with electricity.