Which observation most likely indicates that only a chemical change has taken place?(1 point) Responses A reaction occurs. A reaction occurs. The shape changes. The shape changes. States of matter changes. States of matter changes. The change cannot be reversed. The change cannot be reversed.

Answer 1

The observation that most likely indicates that only a chemical change has taken place is "The change cannot be reversed." This is because chemical changes involve the formation of new substances and often cannot be easily reversed, unlike physical changes where the original material can typically be restored.