Session Date
Lesson Topic
Use of the balances-work in lab
Lesson Outline
We worked on the proper method for measuring mass on both the triple beam balance and the dial balance. The parts of each balance were explained and labeled. That mass is measured by a balance and not weight was stressed, and the difference discussed. Using a series of 100gram and 200 gram masses, the mass of each was determined by actual measurement. The proper method of use of the riders and recording of the beam masses was utilized to arrive at the final mass measurement. The handling and use of the dial balance was introduced, and the determination of a few masses was completed. The greater accuracy of the dial balance was shown to be accurate to 2 decimal places while the triple beam only to one. How to measure a requested amount of material , like 5g of salt, utilizing two different methods was shown. The measurement of an unknown amount of product was also shown on both balances.
Session Minutes
90
Minutes Student Attended
90
Lesson Comments
Nicole learned very quickly how to balance the balance, measure mass by different methods and add the amounts on the beams to at least 2 decimal places. She was a quick study, and did very well in all the measurements.
Session Hours
1.50
Hours Attended
1.50
Entry Status
Review Status
Student Name(s)