A. combustion B. neutralization C. electrophilic substitution D. ionic exchange 16. Silicon carbide is an extremely hard substance, almost as hard as diamond. A pure sample of 0.531 g of it was analyzed by combustion in excess oxygen to produce 0.583 g CO 2 . C. Si 7 C 3 D. Cannot determine with the information given. Name the following compound and indicate whether it is ionic or molecular.
Magnesium oxide is produced by the combustion of magnesium.
The masses of the proton and neutron are nearly the same. Electrons make up most of the mass of an atom. Atoms are indivisible. The charges of the electron and proton are exactly equal but opposite in sign. A. 1 and 2 B. 1 and 3 C. 1 and 4 D. 2 and 3 21.