Hi, 58 M here. I wanted to tell you some things about this chapter. First of all, I learned that soultions can be made from solid, liquid or gas. Second, I learned that the air we breath is a solution, mostly made of nitrogen. Third, I learned that plants are effected by acid. Acid level can even change their color. My favorite thing about the chapter was the chemistry in a bag lab. This was my favorite because of our bag made a popping sound when we slowly opened it up. The thing I liked least about this chapter was the study guides because they are hard for me. Finally, I always mixed up endothermic and exothermic. How did you keep them straight?