noncovalent interactions

Floating Squares

floating squares

I was looking for a new demonstration to initiate a discussion about polarity and related properties to use as part of an exam review. I found a video at ChemEd X (this is part of a ChemEd X subscription). It is entitled “Floating Squares – Hexane and Water” (see note below). I have placed both solutions together before, but I had not added the squares. The demonstration fulfilled my needs. I could have used the original video and muted it if I had not had hexane to demonstrate with.

Vapor Pressure: Molecular Polarity

The vapor pressures of chloromethane and dichloromethane are compared using barometers to show the effect of polarity on vapor pressure.