Which observation most likely indicates that only a chemical change has taken place? (1 point)

Question

The change cannot be reversed.

The shape changes

A reaction occurs

States of matter changes.

Answer 1

The observation that most likely indicates that only a chemical change has taken place is:

The change cannot be reversed.

This characteristic is often associated with chemical changes, as they typically involve the formation of new substances that cannot easily be reverted to their original forms.