1. Side effects of eye drops include pain inside the eye initially, blurred vision, extreme nearsightedness in younger people, reduced pupil size preventing normal dilation and dim vision especially at night or in dark rooms. 2. Heat added during melting and boiling points goes into pulling molecules farther apart, not increasing temperature, which remains constant during phase changes. 3. Hydrophilic molecules are water-loving and can form hydrogen bonds with water while hydrophobic molecules are water-hating and repel water, important for cell membrane structure.