Why are we doing this experiment?
- The General Chemistry Labs at UK have over 1500 students going through the labs in a given semester and we expect that many students have not had any prior experience in labs. This lab is designed to help students new to the lab and those needing a refresher learn how to use basic laboratory equipment.
- Your safety is of up-most concern when you are in the lab. This lab asks you to identify the location of laboratory safety equipment so you know where to access it in case of an emergency.
How do I prepare for lab?
- Prepare your lab notebook.
- Lab Manual, Chapter 2, contains an example of what to include.
- What to put in a lab notebook
- Additional information
What will I do in lab?
- Building a Safety Culture
- The Industrial World takes safety as serious or more so than what you find in your teaching labs.
- Here’s a link to videos by Dow Chemical on their Safety Training Program
- All laboratory workers must know and follow the rules set by OSHA regarding safety in the lab.
- Technique Videos to Watch:
- Using a Graduated Cylinder
- Using a Buret
- Using an Analytical Balance
- Write all your data, observations, and procedural changes in your lab notebook. This includes the initial and final mass, initial and final volumes, and all descriptions of the sample used.
- Common Errors in Lab
- Using incorrect glassware (type and/or size)
- Improper reading of volumes on glassware (see technique videos)
- Using a single piece of foil or several pieces of the same size (think about what the graph would look like if the data points were all the same or very similar)
What do I do after lab?
- Percent Error
- Post-lab Checklist (i.e. things you should be able to do for the lab practical)
- Recognize and apply appropriate lab safety procedures.
- Identify the appropriate use of safety equipment in the lab.
- Use basic laboratory equipment and glassware to collect the needed data including correct use of analytical balances and graduated cylinders.
- Calculate percent error.