Match each of the following descriptions by typing the letter or chemical symbol from the periodic table below. (Answers may be used more than once or not at all).

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor