When two solutions are combined, what evidence would show a chemical reaction has occurred? *
temperature remains constant
a precipitate forms
volume increases

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

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.