Chemistry 10-17-11 Chemical Formulas with Polyatomic Ions

CHEMISTRY: Great job today! Do you understand better now? Remember – baby steps, first binary ionic compounds, and now, formulas with polyatomic ions. Begin learning them now! And practice, practice, practice!!

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Physics 10-17-11 Forces & Newton’s Law of Inertia

PHYSICS: Great first day of chapter 4! So did you really think I was going to send those eggs flying across the room? And remind me again why they didn’t? I love Newton’s first law – the law of inertia. Let’s play with a little tomorrow. Can you use what you know about mass and inertia to find the mass of an unknown object? I know you can! 🙂

Hon Chemistry 10-17-11 Moles, Molar Mass & Avogadro’s Number

HON CHEMISTRY: Hey guys, here’s the lecture from Monday on moles, molar mass, and Avogadro’s number. Remember, it’s all in terms of one mole. The mass of one mole, the molar mass, is the average atomic mass of the element in grams (periodic table). And the number of atoms in one mole is …. well you know that. Speaking of moles, isn’t he cute? Well, beauty being in the eye of the beholder and all. Hmmmm………

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