This drawing is of the cacao pod that contains the cacao bean used to make chocolate. Small quantitites of each brand of hot chocolate are poured into small cups for tasting. A portion of each brand is set aside for testing the pH. Students rank the brands for taste preference and use pH test paper to find out the pH of each brand. Students can then see if there is a difference in the pH of various brands of hot chocolate and if they prefer brands with a certain pH. Presentation Students can make a bar graph of student preference of hot chocolate compared to the pH of the hot chocolate.
Preparation Buy hot chocolate mixes.
Buy small cups for tasting. Locate hot plates, pans, spoons. Purchase pH test strips from a scientific supply company. The cacao beans are inside the hanging pod. This picture was taken in the Amazon, not far from Iquitos, Peru.