Question

question
when a change in a physical property is observed,
select the correct answer below:
it must be because of a physical change.
it must be because of a chemical change.
it could be because of a chemical change or a physical change.
it must be caused by a change that is considered both physical and chemical.

Explanation:

A physical property change can occur due to either a physical change (like melting of ice, change in state) or a chemical change (where new substances are formed and physical properties of the reactants change as a result). For example, when iron rusts (a chemical change), its color (a physical property) changes. When water freezes (a physical change), its state (a physical property) changes.

Answer:

it could be because of a chemical change or a physical change.