What conclusion may be made based on this graph?
a) increasing temperature increases solubility.
b) decreasing temperature increases solubility.
c) increasing temperature decreases solubility.
d) increasing solubility, decreases temperature.

The correct answer would be 1. precipitation

Nonmetals usually react by gaining electrons

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).