I'm pretty new to this event and I want to make my cheat sheet over the summer. For most tests do the event supervisors provide the solution's densities? Or do they just have them labeled with what they are? (ie Saturated NaCl) Also, what would you guys consider as the most common solutions provided? Thanks!
Just FYI I'm basing my response off of Forensics tests that "The Woz" writes (I live in her state so she supervises lab events for competitions here), but the solutions dealing with density are mainly used for the plastics, and they will generally be provided, but you can include them on your cheat sheet just in case the supervisors don't provide them. She will generally label the liquids from 1-6, and they are in correct density order, but they are corn oil
, 46% isopropyl alcohol
, distilled water
, 10% NaCl
, 25% NaCl
, and saturated NaCl
, respectively, and their densities are (in g/cm^3) 0.917, 0.950, 1.000, 1.07, 1.19, and 1.25, respectively. idk what your supervisor would do, but this is how things roll in my state, and probably at nationals as well since The Woz is a national supervisor. PM me if you want more information/help on this event.