CHEM 1014 Fall 1999

Answers to the first three exams will be posted here soon!

Here is a copy of the blank Exam #1 in .pdf format. Answers

Here is a copy of the blank Exam #2 in .pdf format. Answers

Here is a copy of the blank Exam #3 in .pdf format. Answers

Material the Final will cover...

• Review questions on Exams #1, #2 and #3 which you do not understand so you are confident you can do those kinds of problems and so you understand the basic concepts the problem covers.

• Review the InClass Problem Sets to help apply those concepts you require more practice with, and to see different types of problems that can be asked on a particular concept.

• Check the Reviews for Exams #1, #2 and #3.

For material on the Final since Exam #3..

• Organic compounds--alkenes and alkynes; know the names of the first ten alkenes and alkynes, draw and interpret Lewis structures of the straight chain isomers of the alkenes and alkynes, name the straight chain isomers; recognize from the name and from the Lewis structure geometric isomers of alkenes and be able to draw the geometric isomers possible for a straigth chain alkene;

• Recognize the different functional groups (alcohol, carboxylic acid, ether, ester, amine and aromatic) in a Lewis structure of a compound, and be able to describe the difference in an alcohol and an ether, between an ester and a carboxylic acid;

• List the unique properties of water along with a brief discussion of why that property is so novel; explain the nature of an intermolecular attractive force; explain the nature of hydrogen-bonding; draw a diagram showing how hydrogen-bonding occurs in water and other simple molecules; use hydrogen-bonding to explain why the density of solid water is less than the density of liquid water; explain the difference between a hydrogen-bond and a covalent bond between hydrogen and another atom;

I may add some additional suggestions over the next few days, so when you are visitng the Web site stop here and check for changes...I'll add them this sentence and the review list for exam #3.

Material Exam #3 will cover...

• metals, nonmetals and metalloids---You should know what physical properties distinguish metals, from nonmetals and metalloids; where each group is located in the periodic table; our textbook discusses this on pages 86 - 89; (check lecture notes for October 26th);

• ionic and covalent bonding---you should be able to briefly describe the difference between ionic and covalent bonds; you should recognize from the formula of a compound (or element) whether it contains ionic or covalent bonds; provide a definition for a cation and an anion and describe their differences;(check lecture notes for October 26th);

• valence electrons and the rule of eight...octet rule---you should know the number of valence electrons in an atom or ion; how many electrons an atom will gain or lose to have eight valence electrons in both the Group A and B elements;(check lecture notes for October 26th);

• write formulas and name simple binary ionic compounds and ionic compounds containing polyatomic anions; write the formula given the name;(check lecture notes for October 26th);

• write formulas for simple binary covalent compounds; draw Lewis electron structures for simple binary and ternary covalent compounds; name some simple binary covalent compounds (we did not spend too much time on this, so what naming I might ask would be from compounds we'd discussed in lecture/or on the notes); (check lecture notes for November 2nd);

• shapes of covalent compounds---you should be able to draw the Lewis structure for a simple compound, determine the number of bonding groups of electrons, the number of nonbonding groups of electrons and then the shape of the molecule; if I gave you the Lewis structure of a more complex compound you could identif the geometry around a specified atom; (check lecture notes for November 2nd);

• organic compounds---alkanes; know the names of the first ten alkanes; draw the Lewis structures (with the hydrogen atoms) for any alkane; draw possible structural isomers for an alkane given its formula;(check lecture notes for November 11th);

• name an alkane given its Lewis structure; draw the Lewis structure given its name;(check lecture notes for November 11th);

Exam #2 is scheduled for Thursday, October 21, 1999 at 1:30 pm in PS141. Bring a calculator and a sharpened pencil (or two). I will provide you with an exam. All work will be done on the exam. If you bring a backpack to the exam I will ask you to place it at the front of the room.

Material Exam #2 will cover; (I think this a relative complete list, but I may add somethings on Wednesday so check here again.)

• Lecture Notes from September 21, 1999 - October 19, 1999 (see the Lecture Notes link)

• InClass Problem Sets 5, 6, 7 and 8 and the Review Problem Sets (all the problem sets are at the Problem Set link, except the review problem sets. The review problem sets are on the announcements page.)

• The textbook is pretty useless for what we have covered, so I recommend not looking at it for this material. Check our lecture notes on the Web!

• Be able to write the balanced formation reaction for any compound given the compound;

• Be able to write the balanced combustion reaction for any hydrocarbon I give you;

• Be able to convert grams of a substance to mol;

• mol of a substance to grams;

• mol of a substance to atoms, molecules of formula units;

• find the mass of an atom or molecule of any element or the mass of a formula unit of any compound;

• find the number of protons, electrons and neutrons for any isotope;

• write isotope formula given the electrons, protons and neutrons;

• balance any equation I give you;

• given a balanced chemical equation be able to calculate the mol of a substance that will react with, or form from, a given number of mol of another substance;

• given a balanced chemical equation be able to calculate the mol of a substance that will react with, or form from, a given number of grams of another substance;

• given a balanced chemical equation be able to calculate the grams of a substance that will react with, or form from, a given number of grams of another substance.

Exam #1 is scheduled for Thursday, September 16, 1999 at 1:30 pm in PS141. Bring a calculator and a sharpened pencil (or two). I will provide you with an exam. All work will be done on the exam. If you bring a backpack to the exam I will ask you to place it at the front of the room.

Material Exam #1 will cover;

• Chapters 1 and 2 in our textbook;

• Lectures from August 19, 1999 through September 14, 1999;

• Lecture experiments/demonstrations;

• The names, symbols, and formulas for the first twenty elements;

• Experiments #2 and #3;

• InClass Problem Sets 1, 2, and 3.

Suggestions for preparing for this exam using the textbook:

Key Terms

• Be familiar with the key terms (page 42). You should be able to write a short, clear definition on each term and provide an example. You should recognize these terms used in sentences so you are able to understand questions based on these ideas. Those terms which we have used in lecture that appear in this list are most important. Some additional terms we have used which I do not see on the list include, attractive forces, direct relationship, inverse relationship, (I may add more as they come to me.)

Problems and Questions (located on pages 43 and 44)

• 3, 4, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 26.

Critical Thinking Problems (located on pages 44 and 45)

• 1 – 5, 7, 8.

What will the exam look like? There may be some multiple choice questions, but the majority of the questions should be something like those questions we have been doing on the in-class problem sets and discussing in lecture. You should we able to use your calculator to do the simple calculations we have been doing in the in-class problem sets. Short answer and essay type questions are very likely. While some of the questions on the exam may be similar to questions you have done on in-class problem sets or discussed in lecture, some of the questions on the exam will be completely different. However, the questions will cover the material we have been discussing, they may be worded differently so I can assess your understanding of the material. Finally, if you have any questions as you prepare for Exam #1, drop by and visit me in my office, send me an e-mail, call me (47005), ask your TA during discussion, visit the Tutorial Center, or ask another student in class. Do not forget the lecture notes and the answers to the InClass Problem Sets that are available on our Web site.

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