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! ๐Ÿ™‚ ) 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