In this unit we learned about solutions, mixtures, and both physical and chemical changes. In this unit I liked the lab where we used the baking soda calcium chloride and cabbage juice because the bag got really hot and inflated ,then it blew up! In this unit what I didn't like was the test I forgot to study and did'nt do as well as I wanted to. One question that I had in this unit was, what is the difference between exothermic and endothermic reactions?