Day 13

A: test day...stoich I exam....last question....put the gram symbol after 2.200
last test: make sure that you have the correct stoich on the question that EG corrected.

D: plans...
got up to % abundance from atomic masses of known isotopes and average atomic mass so now do another example (finish the ex. from yesterday first....
relate weighted averages to bowling scores or even masses of lacrosse balls and other rubber balls (if need be)

moving on...
explain that a given atom of a specific isotope has a given mass but that the atomic mass of an element means the mass of an "average" atom.
DRAW THIS!

Do Atomic Theory and the evolution of the atomic model:

democritus -sand "atomos"
lavoisier
priestley
Dalton's Postulates: Law of Constant Composition/Definite Proportion
Law of Multiple Proportions...

D: actual ...finished % abundance problem and then did one more to drive the point home....
then started atomic theory... got through 3 of 4 Dalton Postulates

E: finished chart of isotopes and ion of isotopes...
began weighted average atomic mass.....did one example with C12, 13, and 14
almost finished Si example.....

G:actual ...finished % abundance problem and then did one more to drive the point home....then barely started atomic theory with democritus