For the reaction PCl5(g) + heat PCl3(g) + Cl2(g), what will happen when the temperature is increased

Solubility would be your answer.

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).

Are there any options that could alot..

Zinc contains about 30 protons