CP CHEMISTRY FINAL REVIEW make an 8 ½ “ x 11” sheet of paper for the final (FRONT side of paper ONLY) *use the textbook for studying, looking up concepts and equations, and to check your answers Chapter 14: GASES -Questions starting on page 417 #1,2,5,7,9,11,15-17,23,25,34 Chapter 15 and 16: Water and Solutions -Questions starting on pg. 449 #2, pg. 477 #3,4, pg. 486 #16,19-21,pg. 490 #24,29,pg. 495 #33, pg. 496 #35 Also know: the shape of a water molecule is? _________________ ice is less dense than water because ice has a molecular structure that is an open framework (HONEYCOMB shape) that is held together by hydrogen bonds that allows ice to float on the surface of water. What is surface tension? _____________________________________________ Define an electrolyte:________________________________________________ Give examples of an electrolyte:_______________________________________ Define solute and solvent:____________________________________________ What is a concentrated solution versus a dilute solution?__________________________________________________________ Know the equations for boiling point elevation and freezing point depression Brackets [ ] are used to denote concentration (MOLARITY) Review a solubility curve to determine the solubility of certain compounds at various temperatures. Chapter 17: Thermochemistry Questions starting on pg. 510 #10 (check your answer, it should = 2.36 x 10-1 J/gC), pg. 513 #13 Also know: Heat flows from warmer to cooler objects endothermic: energy is absorbed into a system, feels cold to touch exothermic: energy is released from a system, feels warm/hot to touch units for specific heat are: J/gC OR cal/gC H means ENTHALPY, the heat of reaction for a chemical reaction Calorimetry depends on the LAW of CONSERVATION of ENERGY Calculate the amount of energy required to produce 8.00 moles of Cl2O7 on the basis of the following balanced equation: 2 Cl2 (g) + 7 O2 (g) + 130 kcal 2 Cl2O7 (g) turn over Chapter 18: Equilibrium (only section 18.2) Questions starting on pg. 555 #6, pg. 581 #49, 51 a &b, #52 (REMEMBER: if the value of a reversible reaction’s Keq is greater than 1, production of products is favored: if the Keq is less than 1, the formation of reactants is favored) at equilibrium, the rate of production of reactants is the same as the rate of the production of products (RATE of each reaction is EQUAL) What is the reverse reaction of sulfur trioxide decomposing into sulfur dioxide and oxygen?_______________________________________________________ Chapter 19: Acids and Bases, pH Questions start on pg. 593 #3, 4, 5, 7 a & b, pg. 596 #9, 10, 11, 13, 15, pg. 611 #24, pg. 616 #35 Know: Hydronium ion = H3O+ pH + pOH = 14 pH = -log [H+], pOH = -log [OH-] Kw = [H+] x [OH-] = 1.0 x 10-14 Strong acids & bases COMPLETELY dissociate into ions in water, weak acids & bases PARTIALLY dissociate into ions in water Chapter 25: Nuclear Chemistry Questions start on pg. 802 #1-6, pg. 808 #10, 12 b-d, 13 Know: What happens in a nuclear chain reaction?________________________________ Nuclear fusion takes place in the sun A GEIGER COUNTER is an instrument that uses a gas-filled metal tube to routinely check a person’s exposure to radiation Define: radioisotope, nuclear fission, nuclear fusion