PHYSICS: Here’s a quick look at pushing a box across a ceiling – although I’m not sure why you’d push a box across a ceiling, and a hockey puck sliding across the ice. Happy Weekend!!
HON CHEMISTRY: Great job today! Way to apply chemistry to your everyday life!!
I think you’ll find that percent composition problems are super easy to catch on to. First, though, be sure you know which “type” of percent composition you’re trying to fine. Also make sure you can write chemical formulas (I won’t give them to you!) and that you’ve memorized the formulas for acids and those chemical names and formulas for common substances. It’s just plug and play from there! 🙂
CHEMISTRY: Did you get the homework change yesterday? Your only written homework is to do the first two Chemical Formula Practice from sciencegeek.net that are listed on the bottom of the syllabus. Be sure and check the syllabus for how you are supposed to turn it in! Also a good idea to check the syllabus for the web post comment topic!
BIG UPDATE!! The Chap. 7 Memorization Pre-Test Quiz is moved to Thursday, November 8. The following will be on the quiz – monatomic ions, polyatomic ions, prefixes, and acids, AND Writing & Naming Chemical Formulas
Need help with chemical formulas? Help session this Tuesday morning, 7:20ish A.M.
Great job today writing and reading code! Do you think chemical formulas are kind of like code? And if you make one tiny mistake…..???
PHYSICS: Why don’t things that are moving just keep moving? Here is our intro on friction from today. Homework UPDATE for Thursday night: Pg. 146 – 149: 30, 32, 35, 37 – 39, 45, 47, 49
Remember a few key things. One of the most important – net forces produce acceleration.
You can find Ff a couple of different ways – it’ll be part of a net force equation and can be found from the coefficient of friction equation. If and ONLY if your object is moving at a constant velocity, Ff will equal Fa. Fn is only sometimes equal to Fw. If your object is pulled at any angle (or pushed), Fn will be a part of Fnet in the vertical direction.
CHEMISTRY: All kinds of ways to find the moles of chalk in your name! You set a land speed record for finishing a lab. Good job!
The book homework has changed for tonight and tomorrow night. See below if you didn’t get it in class. Also, the thLAB: Calculating MOles is to be written up as a formal lab report – pictures, etc. Be sure and change the formula for sucrose to the formula that is written in the notes on our syllabus.
Thursday HW Update:
Pg. 246 – 250: 28, 30 – 31, 42 AND do 31 and 42 AGAIN but change the directions to: “Find the number of molecules in each of the following.” (Do b and c only on all)
Friday HW Update:
Pg. 238: Blue Practice 1 – 3 (Middle of page)
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!!
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?!?
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!