Through these experiments, you concluded that:

1. Compounds composed of the same elements may have a pH that is either similar or dissimilar to each other. For example, vinegar and vitamin C are composed of the same elements and have a similar pH in that they are both acidic. However, when vinegar and vitamin C are compared to sugar or vegetable oil, which are also composed of the elements carbon, hydrogen, and oxygen, there is a difference in pH. The sugar solution was neutral and the vegetable oil was slightly basic.

2. The pH of each liquid compound in this investigation was dissimilar from that of the other liquid compounds. Although the number of samples investigated were limited. It could be hypothesized that the pH of liquid compounds is dependent more upon the chemical composition of the compound rather than its state of matter.

3. All solid compounds may or may not have the same pH. Salt and sugar each had a pH of approximately 7. However, the pH of vitamin C was acidic and the pH of baking soda was basic as compared to the neutral pH of salt and sugar. Although the number of samples investigated was limited, it could be hypothesized that the pH of solid compounds is dependent more upon the chemical composition of the compound rather than its state of matter.