CHEM 1A03 Lecture Notes - Lecture 2: Lead, Spectroscopy, Liquor Control Board Of Ontario

• School: McMaster University
• Department: Chemistry
• Course: CHEM 1A03
• Professor: Linda Davis

Document Summary

You can identify an element by its electronic transition iclicker question #1. Roygbiv: energy increases from red to violet, frequency decreases from violet to red. Cadmium rice grown in china: rice that comes from china has to be tested for heavy metal. Lcbo has a huge lab for testing heavy metal in alcohol that comes from foreign countries. Take a sample of cadmium rice, dilute it down, and excite its valence electrons to identify the amount of cadmium in a sample (by its color) Spectroscopy and photography are basically the same thing. Not only identify but also quantify how much element is in a sample. Many heavy metals are toxic elements (cd, pb, as) Oral exposure can result in kidney damage, neurological damage, and cancer. Absorption or emission from the same pair of energy levels has the same energy: n=1 to n=2 is absorption, n=2 to n=1 is emission iclicker question #2.