Barnstormer
Your impertinence is based on the unsubstantiated assumption that the sub is in straight and level trim.
See me after class
For me the fun stuff was demonstrating sublimation with Potassium Dichromate, you made your own little volcano!
And who could forget the film of Potassium being introduced to water (too violent to try for real we were advised), it blew the not insubstantial glass turine in 2!
Flooding Q in readiness
Cooch