Develop a definition of chemical change using atoms and molecules in your definition. (please help)

Iknow #2 is d. i just need to know why

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

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.