Density Unit Day 7: Catch-up and Double alcohol assessment

Today  I let the students finish the lab form yesterday (finding the density of the liquids) and stamped off the complete ones.  I also gave the kids a chance to earn stamps from previous labs.  While this was happening I sent them up one at a time to enter their density data into an excel program that automatically finds the average. this led to a discussion about "does density effect layering?"

with 10 minutes left in class, I gave them the "Double Alcohol Assessment".  (link below)
https://docs.google.com/document/pub?id=1LkizaeTJoSqM7kDCC-MlKr7wnJNKyI-ePwrlUyWFJbg