Changes to a substance that do not involve a permanent reordering of atoms are know as question 1 options: endothermic changes. physical changes. chemical changes. irreversible changes.

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

One or more substances changing into one or more substances is an example of a

In which situation can a mixture always be called a solution