Can u get this right

Which real-world scenarios below represent physical and chemical changes? -running a car -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 dinner-spreading peanut butter on bread

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution