CHEMISTRY: Does writing and naming chemical formulas tie you in knots? I hope today’s practice with homework helped!
Keep working on it – both practicing and memorizing polyatomic ions!!! That’s why it’s super important to keep up with your homework!! The knots are all going to come unraveled and you are going to master this!!
flickr photo by Elizabeth The Queen Of All Things
HON CHEMISTRY: So how many molecules in a drop of water? Awesome job today using a chemical formula as a tool!
flickr photo by Zahira
HON CHEMISTRY: Awesome job today using a chemical formula as a tool! I forgot to turn on the mic, so here’s a vodcast from the past. Start it at about 2:36 minutes and ignore the syllabus stuff at the beginning!
So could you find how many molecules in a drop of water? Let’s talk about that tomorrow! P.S. Now you know why it’s so very important to be able to write a correct chemical formula!
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 them now! And practice, practice, practice!!
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!!
Speaking of polyatomic ions, what about that quiz tomorrow?!?
flickr photo by skycaptaintwo
CHEMISTRY: Great job learning to name binary ionic compounds – and even beginning to write formulas! Tomorrow let’s add polyatomic ions! Whoot, whoot!!
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: 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
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!
And don’t forget to add one more thing to your “make sure you memorize for the test” list: polyatomic ions, chemical names and formulas for common substances, binary acids, oxyacids, prefixes, and from today oxidation rules. Oxidation rules! We’ve really already been using oxidation numbers, you just didn’t know it! 🙂
But does it all matter? These complicated rules about naming compounds, I mean. Let’s find out tomorrow in lab!
flickr photo by scottwillis
PHYSICS: Awesome job working the Zorba problem a different way today. Loved, loved, loved watching you brainstorming, collaborating, and applying information you’ve previously learned!!
Now…can you go and do the Zorba problem on your own?
flickr photo by Claudio Gennari
CHEMISTRY – Are you ready? God bless you as you study! Here’s the overview of the test that we did in class today. Speaking of videos – have you watched the video clips on Cu, P, and Si? You can find them at www.periodicvideos.com. If the phosphorus video won’t open for you, try this link from You Tube: https://www.youtube.com/watch?v=LSYLUat03A4
Make sure you aren’t just reading your book and notes. First, memorize the facts, then go back and make sure you can apply the concepts. Study examples, make your own examples, practice making questions. And don’t forget, if you are getting lost with everything you need to know, or if you’re not sure how to study, Chapter 1 Stuff to Know Sheet under the Test Info tab
Also, don’t forget the great review games that are in the Student Premium section of the online textbook. You can do this – I believe in you! I’m praying for you!!
Image source wordle.net
PHYSICS: Did you see it? It’s a gorilla… in a hammock!! Here’s our walk through the gorilla, the woodpecker, and a great preview for the Zorba problems today. Question – were you doing more than just watching me work through the problems? Were you brainstorming, applying information you’ve previously learned?!? That’s what it takes!
Now you try it! Go conquer the Zorba problem!!
Answers for the Equilibrants II worksheet are below:
- Fn = 3430 N upward against feet
- Fn1 = Fn2 = 1890 N upward on each foot
- F forward = 4.59 N
- T1 = T2 = 1760 N
- T1 = 1360 N and T2 = 680. N
Photo by Jaroslava Petrášová on Unsplash