1) pH is the number of hydrogen ions in a substance and is a scale of __________ a) 1-9 b) 0-14 c) 1-7 d) 0-100 2) Acidic substances close the cuticle and have a pH of less than a) 1 b) 5 c) 7 d) 10 3) Alkaline substances have a pH of greater that 7 and soften and do what to the hair? a) Harden and Constrict b) Shrink and Contract c) Soften and Swell d) Open and Welcome 4) Neutral substances have a pH of _____. a) 0 b) 1 c) 7 d) 10 5) Organic chemistry focuses on substances that contain _____. a) Atoms b) Mercury c) Carbon d) Oxygen 6) Any substance that occupies space and has mass is called ______. a) Atoms b) Elements c) Chemicals d) Matter 7) The simplest for of matter is called a(n) __________. a) Compound b) Chemical c) Molecule d) Element 8) Chemical reactions that give of heat are called? a) Endothermic b) Panthermic c) Ultrathermic d) Exothermic 9) An unstable mixture of two or more immiscible substances is called a) Solution b) Suspension c) Emulsion d) Pure Substance 10) Air, containing nitrogen, cabon dioxide, and water vapor, is an example of a) An Inanimate Object b) A Solute c) A Chemical Reaction d) A Physical Mixture

Final Exam Prep Chemistry

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