To dream of chemistry represents feelings experimenting with forcing reactions from people or situations. Social experimenting. Emotional experimenting. Testing people reactions to learn.
Negatively chemistry may reflect knowledge or previous experience that allows to you easily manipulate people with forced reactions. Learning to manipulate people. Experimenting with people’s emotions or jealousy. Testing people’s reactions to understand how to better manipulate them. An insensitive or arrogant attitude how to intelligently make people do what you want. Social experiments with no concerns for the consequences.