Final answer:
A precipitate formation and change in heat energy indicate a change in chemical properties of matter.
Step-by-step explanation:
A precipitate formation and B change in heat energy both indicate a change in the chemical properties of matter.
A precipitate is a solid formed when two solutions are mixed together and a chemical reaction occurs. This indicates a change in the arrangement of atoms and the formation of new compounds.
A change in heat energy, such as an increase or decrease in temperature, is often a sign that a chemical reaction is taking place, resulting in a change in the chemical properties of the substances involved.
C Butter melting is a physical change, not a chemical change, as the composition of the butter remains the same.
Learn more about chemical properties of matter