Laboratory,Week of November 21, 2002 - November 27, 2002 and Week of December 2, 2002 - December 6, 2002

Laboratory, November 18 - 20, 2002:

Monday, Tuesday and Wednesday Labs

This week is VERY different. Students in Laboratory sections 19 - 25 and 28 will do their lab in CLB406 this week. CLB406 is a computer laboratory located on the 4th floor of the Classroom building. The activity we are doing is Experiment 13: Molecular Models on a Computer. The activity was distributed in class on Friday, November 15, 2002. There is a pre-laboratory question that must be completed before laboratory. Students not in lab on M, T or W are welcome to download the activity and do it on their own computer. But if you are in lab on R or F you do not have to turn the activity in for a lab grade.

ChemConnections VSEPR Summary

Lebanon Valley College Molecular Models Home Page

Molecular Models from Wellesley

Thursday and Friday labs

What you are doing this week will be announced soon. It will be one of two activities: a hands-on laboratory in PS257 or a computer activity that you can do on the Web. Your assignment will be here in the next few days.

Laboratory, Week of November 11, 2002

This week we doing a different experiment on molecular architecture than the experiment in our laboratory manual. The new experiment was distributed in class on Friday, November 8, 2002. There are several pre-laboratory questions so do those before arriving in lab. Basically this experiment has you build molecules using two different model kits. Having the experience to actually build molecules is essential for your understanding of the 3-dimensional structure of substances. Also in this experiment you will represent the 3-d model you make using a 2-dimensional structure called a Lewis structure. We will discuss Lewis structures in class on Friday, November 8, 2002 and on Monday, November 11, 2002. Lewis structures are VERY important. Enjoy this experiment, is should be fun...and you do not have to wear your safety goggles.

Laboratory, Week of November 4, 2002

This week we doing the titration experiment, laboratory #7 in the CHEM 1314 laboratory manual. This is a relatively straight forward experiment, but using some equipment for the first time. We will be using burets to deliver specific amounts of a solution. We are investigating the reaction between and acid and a base. For some tips about titration check out my list. You have to do several (at least four) titrations so do not waste time. Many students are having to do five or six because they mess up one or more titrations. Read the experiment carefully before arriving and remember there are several pre-laboratory questions. You will need to read the experiment for the pre-lab question(s).

 

Laboratory, Week of October 28, 2002

This week we doing the Solubility Experiment in the CHEM 1314 laboratory manual. Pretty standard experiment. This experiment requires lots of observations, so you need to be organized. On the unknown you should see if you can come up with a procedure to determine the identity of the unknown with the fewest number of tests. There are several pre-laboratory questions that must be completed BEFORE laboratory. SO be sure to do them.

 

Laboratory, Week of October 14, 2002

This week we are back to normal..in the laboratory doing more thermochemistry. We are doing Exp #10 Heats of Reaction. This is a great experiment to get into Hess's Law and measuring heat transferred. There are several Pre-Lab questions so be sure to do those before you arrive in laboratory. You will be using an OSU calorimeter to measure the heat flow at constant pressure (enthalpy) for several reactions. Then using the heat associated with two reactions to determine the heat of a third reaction. The first experiment is to measure the heat capacity of your calorimeter. This experiment must be done, and the calculations completed BEFORE you continue with the remaining two experiments. A bad heat capacity will make it difficult to calculate the heat transferred in the other two reactions.

Laboratory, Week of October 7, 2002

Fall Break Week is a little strange at OSU. For reasons that can not be discussed (you have to pay more money!) Wednesday, October 9, 2002 is officially a Monday. Students are to attend their Monday class schedule. Thursday, October 10th and Friday, October 11th are officially Thursday and Friday class schedule. So the Week of October 7th laboratory sections 19, 26, 27 and 29 will meet.

The laboratory for this week will be done on the web. The laboratory activity that you must complete is available to be printed out. The web site address for the Calorimetry Simulation you will run is also available.

Print out the Calorimetry laboratory Activity and then go to the Calorimetry Simulation link. Follow the direction in the Calorimetry Activity and use the Simulation to perform the necessary data gathering. Complete the activity and turn it in by 4:55 pm on the day of your laboratory.

Lab Section	Day Experiment is due at 4:55 pm PS155
19	Wednesday, October 9th
26	Thursday, October 10th
27	Friday, October 11th
29	Friday, October 11th

Since I am gone on Thursday and Friday Chemistry Office staff will pick up the experiment write-ups. DO NOT BE LATE ON THOSE DAYS!

Since this web simulation covers material in Chapter 5 which will be on our Exam II I strongly recommend ALL students do the experiment. Only those students in the labs above are required to turn the written activity in for a Laboratory grade.

Laboratory, Week of September 30, 2002

We are doing Experiment #5 in the CHEM 1314 Laboratory manual. Reactions of Copper and its Compounds. IMPORTANT: There are several pre-laboratory questions that MUST be answered before arriving in laboratory this week. You can also do some of the Post-laboratory questions before coming to lab if you want. Note: there are two Post Lab #4 questions. No biggy.

You will be handling 6M HNO₃ and 6M NaOH. When handled properly these reagents are safe. Work with the 6M HNO₃ in the hood. The fumes that are given off when reacting with the copper metal are insidious (dangerous). So keep that reaction in the hood! You will have to transport the container from the hood to your lab bench so be careful walking around the laboratory. Be attentive. KEEP YOUR GOGGLES ON!

This will be a fun laboratory because you will get to do some of the reactions we hae been discussing in class. Friendly reminder...you had better know these reactions!

Laboratory, Week of September 23, 2002

This week's laboratory will not be done in laboratory, but on the Web. The written activity that must be completed is titled 'Metal/Metal Ion Reactions Laboratory Simulation'. Open this pdf document and print out the experimental activity. After printing the written activity open the Laboratory Simulation and complete the experiment. You do not have to complete the experiment in a single session if you find time is short. The completed written activity is due by 4:55 pm the day of your laboratory. Turn-in the laboratory write up at Dr. G's office. You do not have to go to laboratory during the week of September 23 - 27, 2002.

Laboratory, Week of September 16, 2002

We are doing Experiment #3 in the CHEM 1314 Laboratory manual. Empirical Formula. IMPORTANT: There are several pre-laboratory questions that MUST be answered before arriving in laboratory this week. You can also do all of the Post-laboratory questions before coming to lab if you want.

In this experiment you have to watch out that you do not burn yourself. The ring stands and clamps look the same when they are hot or cold so be careful. Do not weigh your crucible when it is HOT! Do not look at burning magnesium, it is very hard on the eyes/retina.

 

Laboratory, Week of September 9, 2002

We are doing Experiment #2 in the CHEM 1314 Laboratory manual. Separation of a Solid Mixture. IMPORTANT: THere are several pre-laboratory questions that MUST be answered before arriving in laboratory this week. You can also do Post-laboratory questions 3 - 5 before coming to lab if you want.

In this experiment you have to watch out that you do not burn yourself. The ring stands and clamps look the same when they are hot or cold so be careful. You also must be careful to heat solutions so they do not boil too rapidly. Boiling causes spattering which will effect your results. Using good technique in this experiment will get you the best results.

 

Laboratory, Week of September 2, 2002

Laboratory section 1314.019 will not meet this week but ALL other laboratory sections (20 - 29) do meet. You will do Experiment 1 Measurement of Matter. All students will be responsible for this material on Exam #1. You must have your safety goggles this week in lab. If you do not have them you will have to rent them frpom the storeroom. Also do not wear shorts or open-toed foot wear to laboratory. You may have to go home to change. You must watch the safety videotape before doing any laboratory experiments.

Laboratory, Week of August 26, 2002

THis week you will check-in. Your TA will give you a key to your own locker that you will use this semester. THis week you are to check all the equipment in the locker to be sure it is clean and not cracked or broken. This week you can replace any of the equipment in your locker. After this week any missing, dirty or broken equipment will have to be cleaned or replaced by you. So be sure EVERYTHIN in your locker is clean. Be sure to read Exercise 2 in your laboratory manual about Checking in.

This week you will do a second ICE. This ICE will be turned in and graded. Follow the instructions of your TA with regard to when the ICE must be turned in.

Laboratory, Week of August 19, 2002

This week in laboratory you will view a Safety Videotape and take a Safety Quiz. The Safety Quiz has questions covering the material discussed on the videotape as well as questions on reading Chemical Hazard Labels and locating safety equipment in the laboratory. The Safety Quiz is not graded but it must be completed BEFORE doing any experiments in laboratory. Each week safety information about equipment and chemicals will be discussed before the experiment.

All students must view the Safety VideoTape and answer the questions on the Safety Quiz BEFORE doing any experiments. So if you missed lab this week you will have to view the safety videotape and do the quiz next week. Inform your TA immediately upon arrival in class. Missing this week will put you behind in laboratory.

Also this week you will work on InClass Exercise #1. You can work in groups on this exercise. Do as much as you can in laboratory. You may take the ICE with you when you leave class, and finish outside of class. ICE1 does NOT have to be turned in.