In lab 19C I showed effective collaboration with my lab partner. We used communication to find the roles each person would do in the lab. I used my critical thinking competency, when observing the precipitates we shared our thoughts and theories about how the precipitates became lighter in each tube. Since the first few tubes with the heavy, silk like, precipitate were the ones with the least diluted solutions, we figured that with each tube the precipitate would be lighter, which was what we observed. We also showed collaboration through making sure we had accurate measurements of our solutions for each test-tube, which is essential to having proper results in the lab. Throughout the Lab 19c, we demonstrated strong examples of critical thinking and collaboration.