One thing that I learned in this unit was that bases are a compound that releases hydoxide ions when dissolved in water. I also learned some examples of acids. They are vinegar, lemon, orange juice, & soda water. I learned about the pH scale too. I learned that the lower the number is on the scale, the stronger the acid is. The higher the number is on the scale, the stronger the base is. The thing I liked best in this unit was doing the "chemistry in a bag" lab  because it was cool to see the calcium chloride change colors & get really hot. My least favorite thing we did in this unit was dropping cabbage juice into little cups because it was almost the same thing as