Chem II Day IX

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Chem II Day IX

  1. 1. Welcome to Chemistry II – Week IXEvening ScholarsMr. Treothe Bullock – Instructor Chapter 8 exam Chemical Equations andReactions Questions Exam Review Science in the News Our Staff here at Bensonand connections with BigOil & Corruption in Africa Final Project Sample Project Stoichiometry Labcontinued Complete Prelab Lab Post Lab write up Absolute Zero
  2. 2. Chapter 8 Test Answers 1-202 points each 1. b 2. a 3. b 4. d 5. a 6. b 7. d 8. a 9. coefficient 10. liquid 11. reversible reaction 12. A + X  AX 13. AX +  A + X 14. A + BX  AX + B 15. AX + BY  AY +BX 16. metal hydroxides 17. combustionreaction 18. electrolysis 19. activity series 20. chemical equation
  3. 3. Chapter 8 Test Answers 21-322 points each 21. conservation of mass 22. gaseous 23. heated 24. A word equation and aformula equation are bothqualitative. Although they bothshow the reactants andproducts of a chemicalreaction, they give noinformation about amounts ofreactants or products. Achemical equation, however,does show the relativeamounts of the reactants andproducts in a chemicalequation. 25. Three indication of achemical reaction are theradiation of heat and light, theproduction of a gas, and theformation of a precipitate. 26. zinc sulfide +oxygen zinc oxide + sulfur dioxide 27. sodium iodide + chlorine sodium chloride + iodine 28. Mg + O 2 MgO 29. CaCO3  CaO + CO2 30. decomposition reaction 31. single replacementreaction 32. synthesis reaction
  4. 4. Chapter 8 Test Answers 33-402 points each 33. doublereplacement reaction 34. CuCl2 + 2AgNO32AgCl+ Cu(NO3)2 35. 2PbO 2  2PbO +O 2 36. Zn(OH) 22CH3COOH Zn(CH3COO)2 + 2H2O 37. Mg (s) + 2H 2O (l) Mg(OH) 2(aq) +H2(g) 38.no reaction 39. Cl2(g) + MgBr2(aq)MgCl2(aq) + Br2(g) 40. Zn (s) + 2HCl (aq) H2(g) +ZnCl2(aq)
  5. 5. Chapter 8 Test Answers 41-442 points each 41. no reaction 42. 2Ni (s) + CuCl2 (aq)  2NiCl (aq) + Cu(s) 43. no reaction 44. Mg (s) + Co(NO3)2(aq) Mg(NO3)2(aq) + Co (s)
  6. 6. Chapter 8 Test 2 points each 44problems 88 points possible 80 = 100% 72+ A 64+ B 56+ C 48+ D Recovery required onall scores below a 56
  7. 7. Tutorial Extra Credit – 15 points I. Prepare questions you have for tutor – aminimum of 1 question from each of the 3levels. II. Take at a minimum of 1 page of notesfrom tutorial session. III. Have a signature from the tutorconfirming your work with them.
  8. 8. Test RecoveryIf you scored under 90% and would like to improve your gradefollow the steps below. 89% is the highest grade allowed onrecovered tests. ½ Credit is given for all questions corrected asinstructed. I. State what yourmistaken question andanswer were. II. Explain the thinkingerror that caused you tomiss the question. III. State the correctanswer. IV. Justify your answerwith a reference in thetext. Show any worknecessary to solve theproblem.
  9. 9. Test RecoveryIf you scored under 90% and would like to improve your gradefollow the steps below. 89% is the highest grade allowed onrecovered tests. ½ Credit is given for all questions corrected asinstructed. I. State what yourmistaken question andanswer were. II. Explain the thinkingerror that caused you tomiss the question. III. State the correctanswer. IV. Justify your answerwith a reference in thetext. Show any worknecessary to solve theproblem.

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