Chemistry 10-31-16 Chemical Formulas with Polyatomic Ions

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. Follow it every time you name chemical formulas!!

Chemistry 10-31-16 Chemical Formulas with Polyatomic Ions from Tammy Skinner on Vimeo.

flickr photo by skycaptaintwo

Chemistry 10-27-16 Intro to Chemical Names & Formulas

CHEMISTRY: Happy homecoming!1 Great job Thursday learning to name binary ionic compounds – and even begining to write formulas! Monday we’ll practice both in a little bit different way.

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!

Chemistry 10-19-15 Intro to Chemical Names & Formulas from Tammy Skinner on Vimeo.

Physics 10-27-16 Newton’s 2nd & 3rd Laws

PHYSICS: So an object at rest can be at equilibrium, but what about an object that is moving? And how does equilibrium relate to Newton’s first law? Or Newton’s second law? And what if you don’t have balanced forces. Here’s the lecture from today on just that! Now remind me, net forces produce what?

Oh, and while we’re at it, you’d rather hit a hay stack than a brick wall why?

(Thanks, Karen and Blake – and all, for being great volunteers!)

And, for your viewing pleasure, enlightenment and overall edification – Julius Sumner Miller on Newton’s Second and Third Laws. Good stuff! you’ll find them extremely helpful with the conceptual part of the test. I strongly encourage you to watch them!

Physics 10-26-15 Newton's 2nd & 3rd Laws from Tammy Skinner on Vimeo.

Photo: Joe Armao

Hon Chemistry 10-27-16 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………

Hon Chemistry 10-21-15 Moles, Molar Mass & Avogadro's Number from Tammy Skinner on Vimeo.

Image source blog.ibts.eu/wp-content/uploads/2009/02/mole2.jpg

Physics 10-26-16 A Woodpecker & ZORBA

PHYSICS: Awesome job working through the woodpecker and Zorba problems 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?

Physics 10-22-15 A Woodpecker & ZORBA from Tammy Skinner on Vimeo.

flickr photo by Claudio Gennari

Hon Chemistry 10-25-16 Oxidation Numbers & Help Session

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! First below is the lesson from today on oxidation numbers, and below that the help session from this morning.

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!

Hon Chemistry 10-25-16 Oxidation Numbers & Help Session from Tammy Skinner on Vimeo.

flickr photo by scottwillis

Hon Chemistry 10-25-16 Help Session from Tammy Skinner on Vimeo.

Physics 10-24-16 And Did the Hammock Crash?

PHYSICS: Great work today thinking through this one and also the “Wanda has a sign” problems! How you look at problems from the beginning can make a huge difference – huh?

A couple of things that work for me when doing equilibrium, etc., problems – first, draw them. Then go back through and separate resultants into components. If an object is in equilibrium, then there are no net forces – all the forces in the x direction balance – everything left equals everything right, and all the forces up equal all the forces down.

You’ve got all the ammo you need, now go forth and conquer!

Answers for the Equilibrants II worksheet are below:

  1. Fn = 3430 N upward against feet
  2. Fn1 = Fn2 = 1890 N upward on each foot
  3. F forward = 4.59 N
  4. T1 = T2 = 1760 N
  5. T1 = 1360 N and T2 = 680. N

flickr photo by loop_oh

Regular Chemistry 10-21-16 Assignment for Friday – Science In the News

To My Beautiful Chemistry Students: I miss you today! Here is the assignment for Friday:

How can chemistry – or science, technology, engineering, and mathematics be important to your everyday life? TONS of ways, and this year we’ll be using Science In the News to research just that!

IMPORTANT guidelines for the assignment:

  • Find your article on the website sciencenewsforstudents.org
  • Make sure you pick an article you find interesting and that you understand!!
  • Make sure you pick an article that you can use to answer the questions on the Science In the News sheet. If there are questions you cannot answer with the type of article you have – pick another article!!!
  • The SItN assignment must be handwritten on notebook paper – you may write on the back

IMPORTANT #2: When you are finished today, put your laptop up in the correct slot and plug it in!!

Hon Chemistry 10-21-16 Friday’s In Class Assignment

To My Beautiful Honors Chemistry Students: I miss you today! Here is the assignment for Friday:

A great way to practice writing and naming chemical formulas correctly is to go to sciencegeek.net and practice the Chemistry Review Activities. I want you to practice two sections from Unit 2 and Unit 3. Click on the sections below to go the the site.

Use your own scratch paper to do your work and figure out formulas. Be sure and check the syllabus to see how, when, and where you turn in this assignment. If you get done early, go back and practice other sections over and over until you can go through each one without making any mistakes!

IMPORTANT: When you are finished today, put your laptop up in the correct slot and plug it in!! Have a great day!

Hon Chemistry 10-20-16 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!!!

And did I mention polyatomic ions? Are you getting ready for that quiz on Monday…..??

Hon Chemistry 10-20-16 Binary Molecular Formulas from Tammy Skinner on Vimeo.

Image source casch52