General Chemistry Spring 2009

John Gelder

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General Chemistry Spring 2009

General Chemistry Spring 2009

05/05/2009

Brief Introduction to the CHEM 1515 Review Problem Set

In this clip I go over several of the problems on the Review Problem Set by discussing what Chapters in the textbook should be reviewed to answer the questions. I have also included several podcasts from CHEM 1314 in this list to provide additional sample problems that are similar to the problems on the RPS.
05/05/2009

CHEM 1314 Exam #1 Review

In this segment I review each of the questions on the CHEM 1314 Exam #1. I do the problem and discuss some of the point assignments and some of the places where students went astray.
05/05/2009

CHEM 1314 Exam #2 Part 1

In this segment I did a number of problems from a past Exam #2. I began by doing a problem where the products of several reactions had to be predicted. The second problem the ionic and net ionic equation was written for two of the reactions discussed in the first problem. Next we did one of my favorite problems converting from grams to mol using molar mass and finding the number of molecules or formula units using Avogadro's Number. Then we looked at a challenging combustion analysis problem for determining empirical formulas. An interesting problem that combined stoichiometry and concentration. The last problem was a limiting reagent problem.
05/05/2009

CHEM 1314 Exam #2 Review

In this segment I Worked out all of the problems on the Exam #2 for the Spring 2006 semester. This will be an excellent review for the final.
05/05/2009

CHEM 1314 Exam #3 Review Part1

In this segment I worked out all but the multiple choice questions on the Exam #3 for the Spring 2006 semester. This will be an excellent review for the final.
05/05/2009

CHEM 1314 Exam #3 Review Part2

In this segment I worked out the multiple choice questions on the Exam #3 for the Spring 2006 semester. This will be an excellent review for the final.
05/05/2009

CHEM 1314 Sample Exam #3 Part 1

In this clip I discuss predicting the products of four reactions (Question 1), and how to write the ionic and net ionic equation for one of the reactions (Q2 @7’ 51”). Question 3 (10’ 57”) asks for the electron configuration and the number of unpaired electrons for three elements. Using the same theme, an orbital diagram is focus of Q4 (18’ 58”). Question 5 (22’ 35”) is a multipart question beginning with the calculation of the frequency of an emission line in the hydrogen atom spectrum, then a calculation of the value of n that the electron falls to, a drawing of the energy level diagram for the hydrogen atom, and finally a calculation of the amount of energy required to ionize the electron. In Q6 (37’ 35”) effective nuclear charge is used to explain periodic trends.
05/05/2009

CHEM 1314 Sample Exam #3 Part 2

In this clip I discuss several multiple choice questions. The first multiple question we need to understand the concept of isoelectronic. In the second questions (3’ 35”) we use the concept of ionization energy. The third question (7’ 55”) the electron configuration of a transition metal cation is determined. The fourth question (11’ 38”) we use the energy level diagram for the hydrogen atom to reach the correct answer. The fifth question (14’ 00”) we must match an electron configuration with a particular group in the periodic table. The sixth question (18’ 6”) is a Hess’ Law problem that has some fun features. The seventh question (26’ 22”) we must calculate the enthalpy of combustion.

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General Chemistry Spring 2009

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John Gelder
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General Chemistry Spring 2009