CHEM 123 Laboratory: January 2010 Welcome to the lab portion of CHEM 123 ! This slide show might look similar to that of CHEM 121, but there are many changes. Slide show best viewed at a resolution of 1024 x 768. Outline
Welcome to the lab portion of CHEM 123 !
This slide show might look similar to that of CHEM 121, but there are many changes.
Slide show best viewed at a resolution of 1024 x 768.
To view the show from the beginning to the end, click Outside the yellow boxes.
To jump to a section of your choice, click In the appropriate box.
5. Lab Safety
8. Purpose of Labs
10. Chem 123 Experiments
34.Part B of Experiments
36. Lab Reports
37. Library Research Assignments
11.Part A of Experiments
12. The Lab Manual
14. Experimental Design Form
15. On-Line Introductory Materials
31. HELP: Resource Centre
42. Groups A and B
43. Personal Lab Schedule Sheets
46. Lab Website Calendar
47. A Brief Tour of the Lab Manual
48. Lab Check-In Week Instructions
Dr. Sophia Nussbaum
Feel free to e-mail me questions. However, as there are over 1600 students in CHEM 123, please first ask TAs (teaching assistants) in the Resource Centre for help, or use the on-line Discussion Board, before sending me e-mail. Otherwise, I will be swamped with masses of e-mail, and will likely stop answering any questions by e-mail. Thanks for your understanding. Note that I do NOT check e-mail on weekends. The Resource Centre and Discussion Board are described later on.
You will need CHEM 121/123 Lab Manual before proceeding any further with this Introductory Slide Show as we will be referring to numerous pages in the manual. Please purchase a copy of the manual from the UBC Bookstore if you do not have one from last term.
The manual cover is shown here.
Please note: outdated lab manuals should not be used.
Your physical safety is the number one concern in the lab.
Some of the chemicals that you will use can seriously harm you if you do not follow the laboratory rules. Please respect the safety protocols!
Before coming to the lab, please watch the Lab Safety video available on the laboratory web site at
You must have eye-protection on at ALL times! Your TA will ask you to leave the lab if after repeated warnings you are not wearing any eye-protection.
You can rent safety-glasses in the lab for $1 per lab session.
Prescription glasses are suitable eye-protection as long as they meet the size requirements listed on page 16 (point i) of the lab manual. If your glasses are too small, you will have to wear safety glasses on top of your prescription glasses.
Contact lenses are not recommended as chemical fumes can melt contacts onto your eyeball! Either wear your prescription glasses, or rent special safety-goggles in the lab.
Students are not required to wear lab coats. We thus recommend that you wear clothes to the lab which you don’t mind getting ruined in the event of a chemical spill. Only the TAs and Lab Technicians wear lab coats.
The following three points must be strictly adhered to:
(1) No open-toed shoes. So that you won't damage your foot if you drop chemicals on it. Please wear closed shoes.
(2) No cropped T-shirts.Your waist is at the same level as the bench-top and you could get a chemical burn on your stomach.
(3) Tie long-hair back out of face.So that it doesn't fall into the beaker full of acid, or a flame etc.
In this course we want you to see what it is like to be a researcher in chemistry.
1. identifying a problem
2. finding information in the literature
3. posing scientific questions
4. formulating a hypothesis
5. designing an experiment to test the hypothesis
6. learning new experimental techniques
7. analyzing data & drawing conclusions
8. recognizing safety issues
There are many steps to performing chemical research. You will be learning how to do the various things listed below in the CHEM 123 lab course:
Exp #9 will use all eight of these steps.
Each experiment has two parts and lasts two weeks:
part A = “Dry Lab Week”
This involves doing preparatory work done at home before Part B. You will have an entire week for Part A.
part B = “Wet Lab Week”
This is the actual experiment performed in the lab.
Your are expected to spend an equal amount of time on both parts of an experiment!
Let’s take a look at Part A requirements first…..
At home, prepare for the lab:
1. Read the Lab Manual
2. Complete the Experimental Design Form
3. Read the On-LineIntroductory Material
4. Attempt the Sample Quiz
For example, refer to page 145 of your lab manual for a list of the Dry Lab Week requirements for Experiment #10A.
Recall that we want you to learn to think the way a chemistry researcher does.
The lab manual has thus been written in a manner that is designed to focus and direct this thinking process.
Pay special attention to the boxed Lab Project Summary and boxed Checklist. Also pay attention to any highlighted-text.
A Concept Map summarizes the most important concepts of the experiment and their relationships.
It is a good idea to start reading an experiment with the concept map.
For example, page 124 of the lab manual has this concept map for Experiment #9B.
The lab manual does not provide “easy-to-follow” step-by-step procedures for each experiment.
For example, pages 159-160 are the design form for Exp #10B.
Your TA will briefly check your Design Form at the beginning of the in-lab session (Wet Lab Week) to ensure that you haven't made a critical mistake.
These on-line materials are meant to help you design your experiment. There are various types of multimedia resources available to you.
2.The Virtual Lab4. Bridging to the Lab Tutorial for Exp. 11
The Dry Lab Week Requirements page for Part A of each experiment lists the specific On-Line Introductory Material that is available for that experiment.
For example, see page 145, point #2. For Experiment #10A, there are three Technique Modules to be read on-line.
You are strongly recommended to read all On-Line Introductory Materials, as some of the Lab Quiz questions will be based on this material (discussed later).
All on-line materials are accessed through
Chemistry 123 Laboratory
Vista web site.
Once you have logged in to your Vista account and clicked on Chemistry 123 Laboratory, you will find buttons linking to all the laboratory on-line resources. These resources are discussed on the following slides.
The Virtual Lab programme allows you to simulate experiments.
You can fully design your experiment using the Virtual Lab to test various scenarios. This is useful for Exp 9 & 12.
During the Lab Check-In there will be a demonstration on how to use the Virtual Lab.
Experiment 12 Exploring Buffers Tutorial uses the Virtual Lab. This tutorial is mandatory (hand in your Feedback Form to as a proof of completion) and has a Vista Quiz associated with it.
To access the Virtual Lab (for use with Exp. 9 and Exp. 12), click the appropriate button on the Vista page.
(1) Click on
(2) Then click on the required link
Bridging To The Lab (BTTL) tutorial for Exp. 11 provides an interactive introduction to techniques and equipment used in the real lab. The BTTL tutorial also expands on the chemical theory behind these techniques. The necessary calculations are also extensively reviewed.
See page 161, point #2 of the manual. Here you are asked to do BTTL Chapter 10. Access the BTTL through the laboratory Vista page. Detailed instructions are provided there.
Let’s take a look at the BTTL
The tutorial consists of several chapters and ends with a Self Test. The test is not mandatory, but it is an excellent way to see if you have gained enough knowledge on the topic to allow you to write the in-lab Quiz.
The Lab Quiz for Exp #11 will be based on BTTL chapter #10 “Electrochemistry”.
When you click on the button, the lab homepage will load.
Notice the various tabs at the top
of the page.
Click on Techniques
You will then be taken to the webpage shown to the right:
Click on the appropriate links for the modules associated with a particular experiment.
Technique modules have pictures of the actual equipment that you use in the labs.
There are also questions located throughout the modules that you should consider answering, as they might be on the in-lab Quizzes.
Most Technique modules also have slide shows that depict exactly how to use various apparatus, or how to correctly use certain glassware.
These slide shows should greatly assist you in preparing your Experimental Design Form.
You can use computers in the In-Lab Resource Centre if you don’t have access at home. More information about the Resource Centre later…
Click on Glossary
The Glossary contains all of the terms from the CHEM 121 & 123 labs listed.
You can search alphabetically, or see which terms are used in each experiment.
Most definitions have a picture of the actual equipment, and there are also hyperlinks to all similar or associated terms.
This is a purely optional resource.
Vitamin C Articles:
For Experiment 9 you will find various articles on several different topics when you click the “Vitamin C Articles” button on the laboratory Vista page.
You will be required to use the Web of Science for other experiments, as instructed in the lab manual.
Vitamin C Project Guides:
Click to access the Experimental Design and Report guides.
Most in-lab sessions will begin with a 10 minute quiz. Any material covered in that particular experiment’s On-Line Introductory Material may potentially be asked about in the quiz. Any material found within the lab manual may also potentially be on the quiz.
The lab manual has a Sample Quiz for each experiment. These types of questions will likely be on the quizzes. For example, see page 139 of the lab manual for the Sample Quiz of Experiment #9B.
The purpose of the quiz is to test your level of preparation for the experiment. It is not meant to be difficult. However, if you have not read the lab manual or the On-Line Introductory Material, you will likely fail the quizzes.
We have now covered all of the Part A requirements that must be done at home before coming to the lab to do Part B during the “Wet Lab Week”.
1. Read the Lab Manual
2. Complete the Experimental Design Form
3. Read the On-LineIntroductory Material. For Exp. 12 you must print out the Virtual Lab Feedback Formand hand it in to your TA.
4. Attempt the Sample Quiz (Complete Exp. 12 Quiz)
Each experiment has a Check-List in the lab manual to remind you of all the Dry Lab Week components. For example, see page 138 of the manual.
If your Experimental Design Form is not filled out at the beginning of the in-lab session, then your TA will know that you are not prepared for the experiment.
You may potentially be considered a Safety Hazard to all of the other students.
Your TA will ask you to leave and book a Make-Up lab with the Lab Director. You will automatically lose 5 marks for that lab.
Another resource available to you for help is the Discussions Tool on the Laboratory Vista site. This is an on-line bulletin board where you can post questions to fellow CHEM 123 classmates, and hope that you receive an answer.
The Discussion is not usually moderated by the Lab Director or any of the Lab Staff. This means that if erroneous information is posted, no one will be there to remove it, so be careful about the quality of advice that you receive.
There is a Frequently Asked Questions link on the Vista page that you might also find useful.
In the lab:
1.Perform the experiment. Collect Observations and Data onto your Experimental Design Form. Use the carbonless copy paper as directed.
2. Clean up your bench area.
3. Have your TA sign your report sheet.
4. Hand in the carbonless copy of your Experimental Design to your TA.
Laboratory Reports in CHEM 123 differ from those of CHEM 121. For CHEM 123 you must write your own reports as described on page 10-12 of the lab manual. Be sure to include all the sections requested. Reports may be either neatly hand-written or typed.
The exception is Exp #11 which uses the “fill-in-the-blank” style report sheets that were used for CHEM 121.
If you choose to re-write your Raw Data in a neater format, you MUST staple to the back of your Lab Report the original raw data sheet that was signed by your TA. If your signed data is not present, your TA will not mark your Report.
Most Reports are due at the beginning of the next in-lab session.The Report for Exp. 13 is due at the end of the lab period.
Reports are marked by TAs and returned during the next Wet Lab session for your inspection only. You may then keep the Cover Page but must return the rest of the Lab Report.
The Introduction section of each Lab Report must be based on a scientific research article that you have found. The Introduction should include a brief discussion of the article, and should not exceed 1/4 of a page in length. See page 11 of your Lab Manual for more guidance.
Suggested search keywords are listed on the following pages for the experiments:
Exp 9: page 123 and 133 (articles are provided in Vista)
Exp 10: page 147
Exp 11: no research required
Exp 12: page 181
Exp 13: no research required
Students are encouraged to work together when designing the experiments.
However, each person must write their own Experimental Design Form.
Students must write their own Lab Reports.
Student's copying any portion of each other's lab reports will receive a "0" on the entire report.
Guides for preparing Exp. 9 (Vitamin C Project) Experimental Design Form and Lab Report can be accessed by clicking the Vitamin C Articles button on the Laboratory Vista page. Help is available in the IN-LAB Resource Centre.
Lab average for 2008 session was 17 / 20.
The only people who ever fail the lab are those who miss entire experiments and don’t schedule Make-Up sessions.
All together, the lab is worth 20% of your course mark.
You must pass both the lab& lecture components of the course to pass Chem 123.
2. Go to the Chem 123 Lab Home Page where you will find an interactive calendar with links for each assignment.
You must login with the correct Group ID to ensure that the calendar matches your own Lab Schedule Sheet.
1. You will receive a personal Lab Schedule Sheet during the Check-In Week.
This sheet clearly describes when and what you must do.
Lab students will be split into two groups, A and B.
Group A students will all be “in-lab” performing a Wet Lab Week experiment, while Group B students will all be at home doing a Dry Lab Week assignment.
On Monday January 4th we will start posting lists on Chem 123 Laboratory Web Area (access through Vista) informing you of whether you are in Group A or Group B. The lists will be updated one day before your scheduled lab. All Group A students will have their Lab Check-In Session (3 hours in length) during the week of Jan 5-4, while Group B students will attend during the week of Jan 12-15.
Your Bench Number. This is where
you will be working in the room.
Your Lab ID #. Please write
this onto everything that you hand in.
Come to the Lab when
you see a room number.
On the lab webpage you will see a calendar. It should be automatically highlighting the current week. As long as you are logged in with the correct Group ID, the interactive calendar will correctly show you what your tasks are for each week. This calendar should match the Personal Lab Schedule Sheets.
Click here to change Groups
Important Information about E
Next Two Pages:
Table of Contents, with Contact Information
Experiments (with Dry and Wet Weeks’ requirements)
Techniques (same as the info found on
Carbonless copy paper and graph paper
Inside the Back Cover:
Periodic TableBrief Tour of the Lab Manual
Structure of the Manual:
Please read p. 1-22 for a review of the material in this slide show and also for supplemental information not covered in this slide show.
Thank you for viewing this Lab Introduction Slide Show.
Any remaining questions you might have will likely be answered either:
(1) On pages 1-17 of the lab manual.
(2) During the Lab Check-In Week.
If neither of these answer your question, then please feel free to come and talk to Dr. Sophia Nussbaum.
Good luck to everyone in CHEM 123 !