Day 22: Solubility

Used hexane, water, iodine demo to spark interest in hexane, water, copper sulfate solubility. Reversal of solute properties provided nice dissonance.

Day 21: Mass Structure Quiz

Quiz day and Lewis Structure tattoos!

Day 20: Formula of an Oxide

Applied hydrate analysis technique to silver oxide analysis. Not sure why all teams arrived with AgO rather than Ag2O? Going to force next class to perform 5 constant mass measurements.

Day 19: Hydrate Analysis Again

Repeated analysis with Epsom Salt with an emphasis on heating to constant mass.

Day 18: Hydrate Analysis

Students worked to determine the formula for an unknown copper (II) sulfate hydrate. I was shocked at the number of lab teams who arrived with the "penta hydrate" formula. I think emphasizing the "weigh to constant mass" procedure helped their answers approach the actual salt to water ratio. In the past, 3  or even 4 water molecules for every one copper (II) sulfate compound was the norm. 

Day 17: Lewis Structure Quiz

To be honest, really screwed up this quiz. Too long, lack of appropriate prep on resonance, bond order, polarity, etc. But...did get the below text from an absent student who was traveling, so terse that... :)

Day 16: Lewis Structures

Lewis Structure relay races in preparation for quiz.

[no picture today]

Day 14: Covalent Bonding

Did a cr@p ton of Lewis Structures and then students shaved my head. #assimilation #teammusallam

Day 13: Chromatography

Leading off Lewis Structure cycle with solubility analysis. Considering an apply day with a CSI focus.