1. How is chloride different from chlorine?
a. Chloride is chlorine’s anion.
b. Chloride has more protons than chlorine.
c. Chloride has fewer protons than chlorine.
d. A and B are correct.
e. A and C are correct.
2. The silica tetrahedron that forms the backbone of all the silicate minerals is composed of silicon and what other element?
a. magnesium
b. oxygen
c. iron
d. carbon