Did you observe any pattern to the results? That is, do the acidic substances and basic substances appear to fall into categories? How do the pH values of the three soft drinks compare with each other? Why are people with upset stomachs sometimes given 7UP to drink, but not Coca-Cola? Was there a significant difference in the pH of diet and regular Coca-Cola? Based on your knowledge of the differences in the chemical composition of diet and regular Coca-Cola, would you expect the pH values to differ? Explain.