I need help with these 3 questions. My answers are: D, A, and E respectively.
Questions 14-16 refer to the following types of substances.
(A) Hydride
(B) Halide
(C) Hydroxide
(D) hydrate
(E) hydrocarbon
14.A crystalline substance in which water is one of the structural units.
15.A crystalline compound that contains only metal and hydrogen atoms.
16.An organic compound.