CHEMISTRY: Great job today writing and naming chemical formulas! I’m impressed with how much you were able to apply from yesterday! The key to getting good at it – practice, practice, practice!!
Photo by Vedrana Filipović on Unsplash
Monthly Archives: November 2021
Chemistry 11-10-21 Chemical Names & Formulas
CHEMISTRY: Great job learning to name binary ionic compounds – and even beginning to write formulas!
Speaking of formulas, what is your plan for all the memorization in this chapter? Word of warning – don’t wait to the last minute!!
Super important – the secret for the next few days and this entire chapter is DON’T GET BEHIND! Keep up with me and practice, practice, practice!
Hon Chemistry 11-10-21 Using Chemical Formulas
HON CHEMISTRY: So the little mole turns out to be a pretty big deal – and a very handy tool!!
Great job today! Here’s discussion on formula mass and molar mass, and then using molar mass and Avogadro’s number as a conversion factor. You’ve got a couple of great tools – so now think through the problems and go forth and conquer!! Be sure and practice them so you don’t forget!
PHYSICS 11-9-21 Vertical Fish Forces & Forces with Pulleys and Friction
PHYSICS: Not sure if you’d ever find a fish on an elevator, but you sure could treat the problem like it was! Here a look at the fish on a line problem, and then, a different take on forces – an application of horizontal forces, vertical forces, friction, all at once!
Wow! Amazing job solving these problems – can you now go see if you can solve them by yourself?
Hon Chemistry 11-9-21 Moles, Molar Mass & Avogadro’s Number
HON CHEMISTRY: So….you think if his work helped us understand something as significant as the number of something in a mole they might name something after him? They did! Go figure! Another name for the number of anything in a mole is Avogadro’s Number. That would be how many?
You caught on super fast today! 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………
Image source blog.ibts.eu/wp-content/uploads/2009/02/mole2.jpg
Physics 11-8-21 Net Vertical Force
PHYSICS: Great start with net vertical force! Don’t you think it’s the same as horizontal – just turned 90 degrees? And incredible demonstrations of some important concepts!
Thank you Cooper and Karis!! Awesome! I love, love, love watching you make physics come alive!
Hon Chemistry 11-8-21 Oxidation Numbers
HON CHEMISTRY: So how are the chemical formulas and chemical names coming? With oxidation numbers, you now have a few guidelines to help polish up what you already know!
Oxidation rules! We’ve really already been using oxidation numbers, you just didn’t know it! 🙂
Physics 11-5-21 Friction & Forces on an Incline Problems – Take 2
PHYSICS: Boxes and block, all slipping and sliding… Is it starting to make a little more sense? Here’s our look at #40,#46 and #52 – taking it a step further.
You’re getting it…keep sledding and watch out for net forces!
Photo by Erda Estremera on Unsplash
Hon Chemistry 11-3-21 Binary Molecular Formulas
HON CHEMISTRY: Okay, I’m not saying that learning to name and write chemical formulas is as bad as a jellyfish sting (you’ll get that in a minute!), but you do have to really, really pay attention to the details!! Here’s our discussion on writing formulas and names for binary molecular compounds. Part of it’s really similar to what you learned to do for ionic compounds, don’t you think? The other part is totally different, though!
Make sure you keep everything straight. Find a way to organize all the information for yourself so you won’t get confused. Also, don’t forget the lists you have to memorize – chemical names for common substances, polyatomic ions, acids, and numerical prefixes. And practice, practice, practice!!!
Physics 11-3-21 Friction on Inclines
PHYSICS: Who knew snow skiing could be so complicated! Well…friction problems on an incline anyway. First, here are problems 37, 38 and 49 from the homework and then our discussion of friction problems on an incline.
Back to the problems – remember, drawing the diagram is super, super important. Label all the forces and apply the concepts you know about net forces and resultant forces – let it tell you a story. 🙂
Here is some info you might find helpful in the future:
