1. Laboratory Experiment: Spectra of Salt Compounds
Led by: Professor Cyril Giurgis

2. Firework Colorants Color Compound Red
strontium salts, lithium salts lithium carbonate, Li2CO3 = red strontium carbonate, SrCO3 = bright red
Orange
calcium salts calcium chloride, CaCl2 calcium sulfate, CaSO4·xH2O, where x = 0,2,3,5
Gold
incandescence of iron (with carbon), charcoal, or lampblack
Yellow
sodium compounds sodium nitrate, NaNO3 cryolite, Na3AlF6
Electric White
white-hot metal, such as magnesium or aluminum barium oxide, BaO
Green
barium compounds + chlorine producer barium chloride, BaCl+ = bright green
Blue
copper compounds + chlorine producer copper acetoarsenite (Paris Green), Cu3As2O3Cu(C2H3O2)2 = blue copper (I) chloride, CuCl = turquoise blue
Purple
mixture of strontium (red) and copper (blue) compounds
Silver
burning aluminum, titanium, or magnesium powder or flakes

3. Expected Colors vs Actual Colors
SrCl2 – red CaCl – orange NaCl- yellow CuCl2 – blue LiCl – whitish

4. Unique, Characteristic, Distinctive
The important thing to know is that every atom of a particular element will have the same pattern of lines all the time.
We say that the spectrum (colors given off) of an element is characteristic.
Useful because you can identify unknown elements by comparing them to others spectra

5. Wave Scientists (Quantum Mechanics)
How these various spectral bands form is a matter of extreme importance because they were among the first experimental proofs of quantum mechanics done by Erwin Schrödinger.
First, because a light wave's frequency is proportional to its energy, (when one goes up the other goes up, when one goes down, the other goes down) he saw the different colored bands as representing discrete energy levels with nothing between them
that 'nothing-between-them' is the basis of the notion of quantum mechanics - sort of like integers have no fractions between them

6. Websites to Help Answer The Conclusion Questions
University of Manitoba atomic theory part two (you have to open the word document)

7. Missing Ionic Comics I have received
Victor, Bacy, Cyril, Shirliz, Emily, Daniel (don’t forget), Owen (almost), Prasansa Rachel lElla Zoya, Josh A (almost – adding in nucleus details)
Harleen -
I will be calling home for Falicity + Josh J