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.

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.