Chemistry 1-17-20 Intro to Radioactivity

CHEMISTRY: Great start to a new chapter! I think you’ll be surprised how much nuclear chemistry is already a part of your everyday life. Also now you know where E=mc2 came from!!

By the way, you ought to read about the life of Marie Cure when you get a chance. Fascinating woman of science with an incredible story!

Hon Chemistry 1-15-20 Bohr Model of the Atom

HON CHEMISTRY: I figured anybody who ditched his honeymoon to finalize his work on atomic theory deserved to have his picture on our website. (I’ll finish telling you that story tomorrow!)

Here are some of the video clip that begin to show the connection between our lab on spectroscopy, the hydrogen emission spectrum, and how we can identify elements – including the one from today on why it’s all important. They’ll be very helpful as you study!!

The Electromagnetic Spectrum (not the song!)
Emission Spectrum of Hydrogen
Animated Quantum Video is the one that explains all about why scientists began to believe that electrons could be acting as waves


Image source www.atomicarchive.com/Images/bio/B23.jpg

Chemistry 1-15-20 Isotopes & Average Atomic Mass

CHEMISTRY: Isn’t God awesome to give us minds to understand the world around us – even the parts we can’t see!

Here’s the discussion from Wednesday on isotopes and average atomic mass. How are you doing on writing nuclear symbols? Also make sure you can use them to determine the number of protons, neutrons, electrons, etc., AND be sure you can use the formula to find average atomic mass!

Can you believe atoms are that small – and the nucleus even waaaaaay smaller! The thumbnail is a picture of atoms from the IBM Almaden Research Center. These are iron atoms on top of copper. Being able to move atoms around like this was a giant leap in the field of nanotechnology! (Sorry about that, bad pun! 🙂 )


Image source IBM Almaden Research Center

Chemistry 1-15-20 Structure of the Atom

CHEMISTRY – Chocolate chip cookie dough model of the atom? That’s what Thompson thought the atom must look like! Here’s our discussion of how scientists began to determine the structure of the atom and the existence of subatomic particles. For each, 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. Wow, that’s a mouthful!

As we continue the explore the discovery of the structure of the atom, here are some video clips that I want everyone to watch that will help make things a bit clearer. Click here for the video on the Cathode Ray Tube Experiment that Thompson did, and also for the video clips that I want you to watch on The Discovery of the Electron and The Discovery of the Nucleus. All of these will be great tools in studying for the test!


flickr photo by pixxiestails

Physics 1-14-20 Chapter 6 Concept Review & Help Session

PHYSICS: Here’s our overview of the test and short review of from today of some of the momentum concepts. Below that is the help session from this morning – #47, the billiard balls, and #12 from the worksheet – the lion in the boat.

God bless you as you study for your test. I’ll be praying for you!


Photo by Web Donut

Help Session from Tuesday morning:

Photo by Robert Zunikoff on Unsplash

Physics 1-13-20 Collisions Problems Review 2

PHYSICS: Great job with some of the more advanced momentum and energy problems! Here’s a look at the student in the middle of a frozen pond, bird on the wire, and car crash with coefficient of friction.

Ready for the test? Take a look at some of the concepts tonight!


Photo by Jenny Salita on Unsplash

Physics 1-10-20 Collisions Problems with Energy & Bouncing

PHYSICS: Great job on the problems so far!! Here’s our look how kinetic and potential energy get involved – dart in the block of wood and the bird on the swing. This cute little bird isn’t on a swing, but he is one I came beak to nose with on a mission trip to Costa Rica!

What about even more practical applications? Hmmmm…..

Hon Chemistry 1-10-20 Photoelectric Effect

HON CHEMISTRY: Wow check out this awesome example of the photoelectric effect – a giant solar flower in Buenos Aires, Argentina! It moves as it follows the sun. Click on the link to learn more. There’s also a link below the vodcast. Giant Solar Flower

Awesome field trip today! Hey what about other applications of the photoelectric effect? Are there tiny people living in boxes above the doors at Wal-mart and Target? What about solar calculators? And hey – what about those automatic flush toilets?!


flickr photo by Stuck in Customs

Hon Chemistry 1-9-20 Wave Properties of Light

HON CHEMISTRY: Isn’t this a super cool picture of light? So tell me again, if we’re supposed to be figuring out electrons, why are we studying waves?

I’m thinking you’ve probably memorized the electromagnetic spectrum after that inspirational song; however, also sure you also know the uses of the different types (all except for long waves). Just in case you’d like to hear it again: Electromagnetic Spectrum Song

How’d you like the light problems so far? We’ll resume with the photoelectric effect tomorrow!


flickr photo by kevin dooley