3. physical or chemical? you observe bubbling, color change, and a temperature increase during a reaction…

3. physical or chemical? you observe bubbling, color change, and a temperature increase during a reaction. a. was this a physical or chemical change? b. what evidence supports your answer?

3. physical or chemical? you observe bubbling, color change, and a temperature increase during a reaction. a. was this a physical or chemical change? b. what evidence supports your answer?

Answer

Brief Explanations:

Physical changes do not result in new substances, while chemical changes do. Bubbling indicates gas formation, color - change shows a new substance with different properties, and temperature increase is a sign of energy change during a chemical reaction.

Answer:

a. Chemical change b. Bubbling (gas formation), color - change (new substance formation), and temperature increase (energy change during reaction)