Chemistry 1-8-18 Intro to Atomic Theory

CHEMISTRY: So how do you feel about being made from earth, air, water, and fire? Here’s the intro we did on how we ended up with the atomic theory. Had you ever heard of Lavosier, Proust, and Dalton?

Pretty impressive little theory that Dalton came up with, huh? Were you surprised as you made comparisons with the Modern Atomic Theory? Could you now take it a step further and show connections between the three laws we discussed today and Dalton’s atomic theory?

Speaking of impressive – a penny turning to gold – wow!! πŸ™‚

Hon Chemistry 11-28-17 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 for Tuesday on isotopes and calculating the average atomic mass of isotopes. Isotopes…. not puppies. πŸ™‚

flickr photo by Xanboozled

Chemistry 12-2-11 Atomic Number & Isotopes

CHEMISTRY: Can you believe atoms are that small – and the nucleus even waaaaaay smaller! Here’s another 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! πŸ™‚ ) Here’s the lecture from Friday on atomic number and isotopes. It’s the last lecture for this chapter – and for this year!!

What did you think about Lise Meitner’s story? Amazing, huh? 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 now you’ve finally got the formula for average atomic mass. Use it to do the problems tonight.

Did you get a copy of the Carbon Isotope Mini-Project? Holler if you have any questions? Have a great weekend!

Image source IBM Almaden Research Center

Hon Chemistry 11-17-11 Atomic Number & Isotopes

HON CHEMISTRY: So did you realize how incredibly small an atom is? And if so, what about the nucleus? My word, how marvelous is our God!!

So, what did you think about the story of Lise Meitner? Why don’t you look her up and see what else you can find out about it?

And here’s a weird bit of trivia. Did you know there is a baseball team called the Isotopes? No kidding, they’re a minor league team in Albuquerque, New Mexico. This is a pic of their “Isotope Field.” Go figure! Almost all elements have naturally occurring isotopes is some amount. Are you getting the hang of writing hyphen notation and nuclear symbols? We’ll work on calculating average atomic mass on Monday. And lots of other fun stuff!! πŸ™‚

Image source