AP Chemistry students are conducting experiments on electrolytes and conductivity using titration. In the titration exercise, their job is to evaluate different brands and qualities of vinegar and see if the concentration reported is actually true.
“We used acetic vinegar (CH3COOH), we put about 10ml into an Erlenmeyer flask, and 2 drops of Pb12. When we put one or two drops of reactant, like HCL (hydrochloric acid), it turned pink,” said Olivia, working in a team with two others.
“Now we are designing an electrolyte experiment. We will decide a solution to find out how strong the electrolyte solution is,” said her lab partners Mirae and Nahyun.
“I wanted to major in pre-med, now I’m flexible but I feel chemistry is a really important aspect of life. We hope to become more skillful in the lab and be better chemists,” said Matilda.
Her lab partner Synthia added: “After I taking chemistry and the Applied Learning Lab with Dr. Kilback last year, which dealt with basic chemistry and how atoms work, I was more interested in pursuing more complex chemistry this year since I plan to major in a science-related field. My experiences last year will help me in this course because it also covers a lot of experiments.”
Lab partners Andy and Quan explained their next activity: “We’re designing an experiment on conductivity in electrolytes. First, we’re doing pre-lab procedures - questions, observations, hypothesis and research, and coming up with the methodology, list of equipment, and the steps we’ll do next. Then we will conduct the experiment, record the data, and write a lab report.”
Advanced Placement (AP) is a United States program created by the College Board which offers university-level curricula and examinations to high school students. The program is widely recognized by US universities as well as universities throughout the world. Most US universities grant placement and course credit to students who score a three to five on the examinations.