Hon Chemistry 11-24-14 Intro to Radioactivity

HON CHEMISTRY: Welcome to nuclear chemistry! No, really – I think you’ll be surprised how much nuclear chemistry is already a part of your everyday life. And now you know where E=mc2 came from!!

Here’s the lecture from Monday; we’ll finish the properties and begin talking about nuclear equations when we get back from Thanksgiving break. By the way, read about the life of Marie Cure – fascinating woman of science with an incredible story!

I’m looking forward to seeing your presentations tomorrow – especially your creativity! Good exercise for that right side of your brain!!

HON CHEMISTRY 11-24-14 Intro to Radioactivity from Tammy Skinner on Vimeo.

Physics 11-24-14 Conservation of Energy & Work Energy Theorem Problems

PHYSICS – Great work on the problems today! I think it was a good idea for us to regroup and make sure you had the conservation of energy formula and the work-energy theorem down!

Are you still trying to follow formulas, or are you starting to be able to think through the problems and and begin to make connections?
Be careful – don’t just start grabbing formulas and throwing in numbers.

Make sure the formulas make sense – ask yourself every time why it makes sense for you to put that particular number in that particular part of the formula. And work them over and over and over until it comes naturally to you!

PHYSICS 11-24-14 Conservation of Energy & Work Energy Theorem Problems from Tammy Skinner on Vimeo.

flickr photo by -BeNnO-

__________________________________________

Chemistry 11-24-14 Chapter 7 Test Overview

CHEMISTRY: God bless you as you study! Here’s an overview of the test from last year. I thought you might find it helpful! Also, did you find the Chapter 7 Stuff to Know sheet on Edline? Click here on the name, if you need one. I know it seems like a lot, but you can do it!

(REMINDER: You don’t have to know diatomic molecules. – 6th period, I think I may have forgotten to tell you this!!!)

First priority – make sure that you have memorized EVERYTHING. Then, go to sciencegeek.net and make sure you can write and name chemical formulas. Practice, practice, practice!!! Then start practicing the different kinds of problems – do at least three of each one of them. And also try those on sciencegeek.net. That’s always some good practice. I’ll be praying for you! You can do it!!

HON CHEMISTRY 11-21-13 Properties of Radioactive Nuclides from Tammy Skinner on Vimeo.

flickr photo by libraryman

Chemistry 11-21-14 Polymers

CHEMISTRY: We finally finished the chapter! Did you realize molecules could be that large? And so many of them. But don’t you think polymers are cool? Here’s the lecture from Friday. Don’t forget the Polymer Worksheet! Put the answers on sheets of notebook paper.

Some items for contemplation: why are certain plastics recyclable and others not…and what about dishwasher and microwave safe? Hmmmmm…

TEST TUESDAY on ALL of Chapter 7! Have you been checking things off the Stuff to Know Sheet on Edline? Praying for you! You can do this!!!

CHEMISTRY 11-20-13 Polymers from Tammy Skinner on Vimeo.

Image source: http://www.packtech.ca/pb/images/img32161428fffbe41e07.jpg

Hon Chemistry 11-20-14 Isotopes & Average Atomic Mass

HON CHEMISTRY: Awwww….aren’t they cute! So what do you think the average atomic mass of puppies is?

Here’s our discussion from today on isotopes and calculating the average atomic mass of isotopes. Isotopes…. not puppies. 🙂

HON CHEMISTRY 11-20-14 Isotopes & Average Atomic Mass from Tammy Skinner on Vimeo.

flickr photo by Xanboozled

Physics 11-20-14 Potential Energy & the Work Energy Theorem/ Conservation of Energy

PHYSICS: See?! I wasn’t kidding about the balancing rocks movement!

Here’s the lecture from Thursday on work and potential energy and conservation of energy. Great start on the problems and concepts!!

PHYSICS 11-20-14 Potential Energy & the Work Energy Theorem/ Conservation of Energy from Tammy Skinner on Vimeo.

flickr photo by James Jordan

Chemistry 11-20-14 Molecular Formulas

CHEMISTRY: Hey guys! Awesome job with empirical formulas, and now you’ve conquered writing molecular formulas! It’s just like writing empirical formulas but with a twist at the end!

By the way, if you’d like some practice or if you have questions, holler and we can have a help session!

We are getting very close to the end of the chapter! Have you started preparing for the test? It will be over ALL of chapter – plus a small bit we’ll talk about tomorrow. Be sure and checked out the Stuff to Know sheet for all of chapter 7 on Edline!

Chemistry 11-20-14 Molecular Formulas from Tammy Skinner on Vimeo.

flickr photo by Sebastian Mary

Physics 11-19-14 Work Energy Theorem

PHYSICS: 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 11-19-14 Work Energy Theorem from Tammy Skinner on Vimeo.

flickr photo by raysto

Chemistry 11-19-14 Empirical Formulas

CHEMISTRY: So, would you like to be Greg on CSI? Great start on empirical formulas today!

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. Tomorrow we’ll talk about a little step you might have to add at the end. Also tomorrow, quiz?!?

CHEMISTRY 11-19-14 Empirical Formulas from Tammy Skinner on Vimeo.

Image source www.dnr.mo.gov/env/esp/images/prettytesttubes.jpg

Hon Chemistry 11-18-14 Structure of the Atom, Pt. 2

HON CHEMISTRY – Hey guys, here’s the lecture from Tuesday on how scientists discovered protons and neutrons. You know, in class yesterday and today I just gave you mostly one name to go with each, but don’t forget they work with other scientists to get the job done!!

Make sure you know the name of the scientists, the name of their experiments, be able to draw a diagram of their experiment, and describe how they interpreted the experimental results that led to their discoveries.

Don’t forget about the video clips we watched in class, they’ll help you review the different experiment that the guys like Thompson and Rutherford did. Here’s another one on The Discovery of the Nucleus. And again – do you think there could be anything smaller than protons, neutrons, and electrons? Hmmmmm……

By the way – how do you feel about playing scientist tomorrow? How is what you’re going to do similar to the work of early scientists in discovering the structure of the atom? Don’t forget to bring your sock/can atoms with the surprise items inside! Don’t forget that you DO NOT have to cut your sock. Just get a sock that’s really long, and stick a clean, empty can inside it. Well, make sure you put your mystery items (three or more) inside the can first!

HON CHEMISTRY 11-14-15 Structure of Atom, Pt. 2 from Tammy Skinner on Vimeo.

flickr photo by Here’s Kate

_________________________________________________________