Question

1. which of the following is evidence that a chemical change has taken place? change in temperature all of the above formation of bubbles change in color

Explanation:

A change in temperature can occur due to an exothermic or endothermic chemical reaction. Formation of bubbles indicates the production of a gas, which is a sign of a chemical change. A change in color often shows that new substances with different chemical properties have been formed. All these are common signs of a chemical change.

Answer:

B. All of the above