31. (i) The property of spontaneously giving up water of crystallization to the atmosphere.   32. (ii) A liquid or solution, which conducts electricity with accompanying chemical change.   33. (iii) A compound, which is soluble in water and the only negative ions in the solution are Hydroxide ions.   34. (iv) An oxide, which forms salts when it reacts with both acids and alkalis.   35. (v) A set of compounds having the same general formula, similar methods of preparation similar chemical properties.