Exothermic or Endothermic?

The following is reputed to be an actual question given on a University of Arizona chemistry mid-term, and an actual answer turned in by a student. The answer by one student was so “profound” that the professor shared it with colleagues, via the Internet, which is, of course, why we now have the pleasure of…

It is so hot in the Midwest that……

….the birds have to use potholders to pull the worms out of the ground. ….the trees are whistling for the dogs. ….the best parking place is determined by shade instead of distance. ….hot water comes from both taps. ….you can make sun tea instantly. ….you learn that a seat belt buckle makes a pretty good…

Cannon Balls

DID YOU KNOW THIS? It was necessary to keep a good supply of cannon balls near the cannon on old war ships. But how to prevent them from rolling about the deck was the problem. The storage method devised was to stack them as a square based pyramid, with one ball on top, resting on…