Daily Archives: November 18, 2020

Chemistry 11-18-20 Chemical Formulas with Polyatomic Ions

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CHEMISTRY: Great job today! Do you understand better now? Remember it’s like baby steps, first binary ionic compounds, and now, formulas with polyatomic ions. Begin learning how to do them now! And practice, practice, practice!!

Speaking of – how are you doing with polyatomic ion memorization? Have you learned them for…ever?

Another great idea, click here for a copy of the Hints for Naming Chemical Formulas Flow Chart, or find it under the Worksheet/Handouts Tab. Follow it every time you name chemical formulas!!


flickr photo by skycaptaintwo

Hon Chemistry 11-18-20 Empirical Formulas

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HON CHEMISTRY: Awesome job today!! You just about figured out how to find empirical formulas all by yourself! I love the way you were able to think through what you knew and what you needed to find a solution!

Be sure and practice – if you don’t it’ll get all turned around and you’ll end up leaving off an important step. The hardest part is that it’s not a set formula for you to plug and play, but if you’ll keep in mind that you’re really just looking for subscripts which are just moles, you’ll be able to think it through. Percent to mass, mass to moles, moles to smallest whole number ratio.

Are you starting to catch on to the steps? It will be good for you to memorize them, but would it not be just tons better to understand why you need each step – backwards and forwards, so then you wouldn’t need to memorize them at all!


Photo by Christopher Sardegna on Unsplash

Physics 11-18-20 Work & Energy

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PHYSICS: Funny thing about words, all this work you thought you’d been doing, was it work after all?

Great job today on making connections between work and energy! I think you’ll like using the work-energy theorem, it’ll save you some time and a couple of steps. Don’t forget about friction!

Physics 11-17-16 Work & Energy from Tammy Skinner on Vimeo.

flickr photo by *hb19