Apologia Chemistry: Module 11 Solutions

Last week, I posted a video about solutions with Kool-aid, a series dilution.  My Co-op is completing the lab report for the two experiments in Module 10 this week.  I am trying to stay ahead.  Here is the sequence of activities: Read Module 11, do the Kool-aid lab and series dilution. (Watch the video.). Next is Why do ionic compounds dissolve in water?  This is described well in Module 10.  Watch the video on the link; the textbook will make more sense.  Next do all four experiments in the module.  Do the discrepant event, Alcohol and Water.  I tried this activity using 90% isopropyl alcohol, 70% alcohol (isopropyl alcohol is rubbing alcohol), and ethyl alcohol or ethanol.  The best combination was with 70% isopropyl alcohol and distilled water.  I think the issue is the type of graduated cylinders.  Borosilicate glass cylinders are more accurate than plastic cylinders.  I had one borosilicate cylinder; it was smashed.  See the video below for my attempt at this discrepant Event.