which real - world scenarios below represent physical changes? check all that apply. running a car engine…

which real - world scenarios below represent physical changes? check all that apply. running a car engine exploding fireworks mixing water and powdered drink mix combining oil and vinegar to make salad dressing taking aspirin for a headache diluting bleach with water digesting thanksgiving dinner spreading peanut butter on bread done

which real - world scenarios below represent physical changes? check all that apply. running a car engine exploding fireworks mixing water and powdered drink mix combining oil and vinegar to make salad dressing taking aspirin for a headache diluting bleach with water digesting thanksgiving dinner spreading peanut butter on bread done

Answer

Brief Explanations:

Physical changes do not change the chemical composition of substances. Mixing water and powdered drink mix is a dissolution - a physical change. Combining oil and vinegar is just a mixture of two substances without chemical reaction. Diluting bleach with water is a physical dilution process. Spreading peanut butter on bread is a physical rearrangement of substances. Running a car engine, exploding fireworks, taking aspirin (chemical reaction in body), digesting dinner involve chemical reactions.

Answer:

mixing water and powdered drink mix, combining oil and vinegar to make salad dressing, diluting bleach with water, spreading peanut butter on bread