Which of these is an example of a physical change? a) iron melting b) steel rusting c) paper burning d) wood decaying

Option (A) is the correct answer.

Explanation:

A change in chemical reaction which results in the formation of new compounds is known as a chemical change whereas a chemical reaction in which there is no formation of any new compounds is known as a physical change.

For example, rusting of iron is a chemical change and melting of ice is a physical change.

Therefore, out of the given options iron melting is a physical change because melting causes change in intermolecular forces and no formation of any new products.

Thus, iron melting is a physical change.

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explanation:

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.