FOR 3/28/01, Wednesday CHAPTERS 1, 35, 2, 3
DUE: A list of the new vocabulary words that you found in today's reading.
STUDY: P. 20:1-6, p.98: # 12, 13, 14, 15
Chapter 1: Read to see what Analytical Chemistry encompasses. Read and think to see if you tell your roommate the steps in an analysis. Your problem is to determine the moisture content in a wagon load of Illinois corn. This is the total analytical process. Study Figure 1-1, p.3. Does Figure 1-1 remind you of the Scientific Method?
Chapters 35: relates to the laboratory. You should read carefully about the apparatus that you are using. The lab notebook hints in Section 35-J are important. Use this chapter as a supplement to your laboratory directions. Consult these pages as you would a reference book. Read it once or twice now, later when you need a specific section come back to the specific reference.
Chapter 2: Read it and think about what you are reading. Chapters 2 is introductory of statistics. Define both verbally and algebraically: mean, median, average, precision, accuracy, standard deviation, relative standard deviation, error, relative error. Does Figure 2-2 make sense?
Chapter 3: Distinguish between determinant and random [indeterminant errors]. Often when students read about errors they get depressed. Errors are important, but we all survive and get good results. I want you to be aware of errors and to be careful, BUT we can enjoy chemistry and CHM 210 inspite of the errors that we all make! Pages 18 and 19 are important. Review the use of significant figures. What is the normal curve? Do you want me to make your grades fit a normal curve? Think about the rejection of "outliers" and use the Confidence limits and "Q Test" to determine rejection.Carefully review the terms in this chapter. These terms will be important as we treat data obtained in the laboratory. Especially note: absolute error, accuracy, average deviation, confidence interval, constant error, control chart, determinate error, normal distribution, intermediate error, mean, median, precision, proportional error, Q-test, range, relative error, significant figure, standard deviation, variance. A good exercise is to write out the answers to questions 2-1,2-2,2-3,2-4,2-5,2-6 on page 20. Note on page 44 the highlighted gold note! Take this note to heart.
NOTE THE WORDS WHICH ARE NEW VOCABULARY WORDS FOR YOU.
FOR 3/0, FRIDAY- CHAPTERS 2, 3, 4
DUE: Problem 1 to be distributed
STUDY:PAGE 20: 8, & Page 44: 5, 6, PAGE 68: 1, 2, 3, 4, 7, 13, 16, and those similar to previous ones
Review Chapters 2 and 3 and begin to read Chapter 4.
Chapter 4: 4-A gives you some statistical background, note the marginal notes. Section 3-B is very important. These are the applications that we will make of statistics. Study the terms: average deviation, confidence interval, constant error, control chart, determinate error, normal distribution, intermediate error, mean, median, precision, proportional error, Q-test, range, relative error, significant figure, standard deviation, variance. Can you clearly define each term. Does the term mean something to you? Can you describe the process, or make the calculations needed? p.45 and section 3B-2 is very important. I expect you to use the Q test in the laboratory. We will be working on laboratory data to gain experience in using the Q test and rejecting outliers. Section 3B-3 is also important. When data is graphed, one needs to treat it statistically. The computer is a big help in data treatment.
FOR 4/2, Monday, Chapter 4 and PROBLEMS TO DATE
DUE: those assigned.
STUDY: p.61: 4-16, 4-17, 4-19, and p.98: 5-1, 5-2, 5-4, 5-5, 5-7, 5-9. 5-21
Gravimetric analysis is an important tool in analysis. Section 5A is important. Study Ex. 5-4. This is the stoichiometry in action. Examples 5-5, 5-6, and 5-7 are nice one. On page 80 learn equation 5-2. YES, MEMORIZE IT! GF means gravimetric factor. Section 5-B is important to understanding what is happening in the beaker during a precipitation. 5B-5 is a neat technique. Note well. 5-C is a needed step. Read 5-D. Tables 5-3 and 5-4 show the breadth of gravimetric methods.
FOR 4/4, Wednesday, Chapter 5
DUE: To be assigned
Study 5-16, 5-20, 5-25 5-28
REVIEW THE PROBLEMS TO DATE and THE WORK THAT YOU HAVE DONE IN LAB.
MORE TO FOLLOW!
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