Chemical equations; Balancing; Ions in solution
1. Read chapter 3 (113-118, 122-126)
2.Optional OWLs: Chapter 2: How Do I Solve It? and End-of Chapter
3. OWLs 3.3, 3.5 due Sunday, September 27
Why are some chemicals reactive toward others?
Today’s lecture:
Sept 25
Hi Adam,
I think that you are referring to the letters with white fill. Those elements are synthetic elements, and do not occur naturally. Tc is one of the lightest of the artificial elements, and is often used in preparing either therapies to kill cancer, or imaging agents to diagnose diseases. Most artificial elements are heavier than U. And many were discovered at U.C. Berkeley, by Glenn Seaborg and affiliated scientists in the period following WWII.
Professor,
Why are certain elements in the periodic table, like Promethium in the actinides, written in bubble letters?
Professor,
I just watched the chemical party video and thought it was really funny, I think that it is worth mentioning in class.
Professor,
I am having trouble with the 2.10g TUT OWL. I believe my answer is correct and it tells me that I’m wrong. Even when I do the tutorial problem and I get up to entering the empirical formula it tells me that what I’m inputting is wrong even though it is the same answer that pops up below.
Professor,
I am having trouble with 2.10g TUT-Percent Composition to Formulas OWL problem. Every time I try to put in the correct answer it tells me I’m wrong (my Empirical formula is the same as the molecular formula because their masses are equal). Even when I try to do the tutorial I get up to the part that says what is the empirical formula it tells me I’m wrong when the correct answer (that pops up below it) is the same as what I’m putting.
Prof. Knapp,
Is there anywhere in book where I can find a list of all the polyatomic ions that we’ll need to memorize?
MK: See Table 2.4 (pg. 74)