Floral litmus solutions
I started off the week of elements and chemistry slightly differently. I handed out a list of the symbols for a few of the more commonly used elements and asked the students to write out the name and the number of outer valence electrons. Many could name C, N, O, but few knew Cu or Pb. I opened with the introduction to hydrogen, then went after the atomic mass not being a whole number. This led to deuterium, tritium, and the Able and Baker detonations that destroyed Bikini. Note that Hydrogen had been erased on the board above and replaced by Beryllium as I ran out of space on the right board. The above was the second board on Monday. Helium shows the electron spin. Wednesday moved into molecules. Some of the left board had been erased and rewritten above. The carbon monoxide on Wednesday was a carbon dioxide until I erased one oxygen. That diagram could use improvement. Swister, Brenda, Junida Every term the complex launch that this Thursday is causes ...