Unit 8.3 Analyzing the Unknown Students apply chemical
principles to problem solving. Analytical methods for analyzing
solutions of unknown composition are Video program cues: 16:00
28:00 "Everythings different. No case is ever the same. I worked
as an analytical chemist and everything is routine, its the
same, but in case work, theres a lot more challenge, and trying
to figure out something, and it is satisfying when you make the
connection between the victim and the suspect, and its kind of
neat when you find something that nobody else ever thought of
doing. General unknowns are a lot of fun, too, because theyre a
big challenge: what is it, where did it come from, and you try
to identify a complete unknown, because it could be anything in
the world that could be used as evidence. So, its always a big
challenge. I like the puzzle, the mystery of trying to figure
the things out. Typically what we do is we get a sample, and we
take just a few grams on the spatula, and we burn it. That would
be a positive flame