Chem 103 Concept Test & Clicker Survey 1 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 1 The concept tests and clickers have helped me in learning chemistry. SA = strongly agree A = agree N = no opinion D = disagree SD = strongly disagree Copyright 2002, David R. Anderson

Chem 103 Concept Test & Clicker Survey 2 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 2 The use of concept tests and clickers has encouraged me to come to class better prepared. Copyright 2002, David R. Anderson

Chem 103 Concept Test & Clicker Survey 3 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 3 Given two class sections that are the same in all other respects, I would take the one that uses concept tests and clickers. Copyright 2002, David R. Anderson

Chem 103 Concept Test & Clicker Survey 4 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 4 I am satisfied with the way the clicker points were incorporated into the overall score for the course. Copyright 2002, David R. Anderson

Chem 103 Concept Test & Clicker Survey 5 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 5 The concept tests have helped me to do better on quizzes and exams. Copyright 2002, David R. Anderson

Chem 103 Concept Test & Clicker Survey 6 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 6 I would prefer that clicker points be counted: As a required, fixed percentage. As extra credit points. On a sliding scale counting against quiz and exam scores (as was the case in this class). I don’t really care, as long as they help my grade. No opinion. Copyright 2002, David R. Anderson

Chem 103 Concept Test & Clicker Survey 7 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 7 I usually discuss the concept test question with other students before answering with my clicker. Copyright 2002, David R. Anderson

Chem 103 Concept Test & Clicker Survey 8 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 8 The use of concept tests and clickers has helped me to understand the concepts of chemistry better. Copyright 2002, David R. Anderson

Chem 103 Concept Test & Clicker Survey 9 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 9 When I got the wrong answer on a concept test question, the instructor’s explanation cleared up my misunderstanding. Copyright 2002, David R. Anderson

Chem 103 Concept Test & Clicker Survey 10 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 10 The use of concept tests and clickers has encouraged me to read the textbook before coming to class. Copyright 2002, David R. Anderson

Chem 103 Concept Test & Clicker Survey 11 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 11 Given two class sections that are the same in all other respects, I would recommend to a friend to take the one that uses concept tests and clickers. Copyright 2002, David R. Anderson

Chem 103 Concept Test & Clicker Survey 12 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 12 I usually rely on other students for the answers to the concept test questions. Copyright 2002, David R. Anderson

Chem 103 Concept Test & Clicker Survey 13 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 13 I have enjoyed this course more because of the use of clickers. Copyright 2002, David R. Anderson

Chem 103 Concept Test & Clicker Survey 14 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 14 I attended class more often because of the concept tests and clickers. Copyright 2002, David R. Anderson

Chem 103 Concept Test & Clicker Survey 15 Chem 103, Concept Tests Chem 103 Concept Test & Clicker Survey 15 The instructor provided adequate feedback on concept test questions. Copyright 2002, David R. Anderson

Chem 103, Concept Tests Chem 103 Concept Test 5-14 What is the total concentration of ions in a 0.0360 M solution of Na2CO3? a. 0.0120 M b. 0.0720 M c. 0.0900 M d. 0.108 M e. 0.144 M Copyright 2002, David R. Anderson

Ti(s) + 2 Cl2(g) ® TiCl4(ª) DH = -804.2 kJ Chem 103, Concept Tests Chem 103 Concept Test 6-6 Determine the heat of vaporization of titanium(IV) chloride given the enthalpies of reaction below. Ti(s) + 2 Cl2(g) ® TiCl4(ª) DH = -804.2 kJ Ti(s) + 2 Cl2(g) ® TiCl 4(g) DH = -763.2 kJ a. -1567.4 kJ b. 0.949 kJ c. 41.0 kJ d. 61.3 kJ e. 1567.4 kJ Copyright 2002, David R. Anderson

b. NO2(g) + NO(g) + O2(g) ® N2O5(s) c. 2 N2(g) + 5 O2(g) ® 2 N2O5(s) Chem 103, Concept Tests Chem 103 Concept Test 6-7 Which of the following chemical equations corresponds to the standard enthalpy of formation of N2O5? a. N2O3(s) + O2(g) ® N2O5(s) b. NO2(g) + NO(g) + O2(g) ® N2O5(s) c. 2 N2(g) + 5 O2(g) ® 2 N2O5(s) d. 2 N(g) + 5 O(g) ® N2O5(s) e. N2(g) + 5/2 O2(g) ® N2O5(s) Copyright 2002, David R. Anderson

Rank Na, Mg, and Ca in order of increasing second ionization energy. Chem 103, Concept Tests Chem 103 Concept Test 8-12 Rank Na, Mg, and Ca in order of increasing second ionization energy. a. Na < Mg < Ca b. Mg < Ca < Na c. Ca < Mg < Na d. Na < Ca < Mg e. Ca < Na < Mg Copyright 2002, David R. Anderson

Which of the following relationships are true for gases? Chem 103, Concept Tests Chem 103 Concept Test 12-3 Which of the following relationships are true for gases? 1. The volume of a gas is directly proportional to its pressure in mm Hg. 2. The pressure of a gas in inversely proportional to its temperature in kelvin. 3. The moles of a gas are directly proportional to the gas constant R. a. 1 only b. 2 only c. 3 only d. 2 and 3 e. none are true Copyright 2002, David R. Anderson

Chem 103, Concept Tests Chem 103 Concept Test 12-8 Which of the following are postulates of kinetic-molecular theory of gases? 1. The distance between gas molecules is large in comparison to their size. 2. The velocity of a gas molecule is inversely proportional to its temperature. 3. Gas molecules are in constant, random motion. 4. At a given temperature, all gases have the same average kinetic energy. a. 1 and 4 b. 1, 2, and 4 c. 1, 3, and 4 d. 2 and 3 e. 3 and 4 Copyright 2002, David R. Anderson

Chem 103, Concept Tests Chem 103 Concept Test 13-9 A chemist sets up two beakers of distilled water under the sane room conditions in the laboratory. One beaker is boiling vigorously, and the other is boiling gently. Which of the following statements is true? a. The temperature of the vigorously boiling water is higher. b. The temperature of the gently boiling water is higher. c. The temperature of the water in both beakers is the same. d. The boiling points of the water in the two beaker must be different. e. The temperature in the vigorously boiling water is not uniform. Copyright 2002, David R. Anderson

Exam Averages Clickers started

Quiz/Exam/Final vs Concept Tests R = 0.56