Chemistry 1-4-12 Intro to Radioactivity

CHEMISTRY: Happy new year and welcome to nuclear chemistry! We only barely got to begin today, but let’s finish talking about the properties of radioactive nuclides tomorrow. 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!!

Have you got a copy of the syllabus yet? It’s really important that you read it carefully – especially so you’ll know what to do about the half-life lab.

Here’s the brief intro lecture from Wednesday; we’ll finish the properties and begin talking about nuclear equations tomorrow. By the way, you need to read about the life of Marie Cure. Fascinating woman of science with an incredible story!

Physics 1-4-12 Impulse-Momentum Theorem

PHYSICS Welcome back and happy new year! Didn’t realize you would be so good at shooting marshmallows. Remind me to never let David near a poison dart gun! Here’s the lecture from Wednesday on the intro to momentum and the impulse-momentum theorem. Did you understand the relationship between force and time? Let’s see if you can put it to practice tomorrow! And thanks Matt!!


Image sourece www.dhss.mo.gov/…/Images/momentum.jpg

Chemistry Half-Life Simulation Lab – Part 1

CHEMISTRY: Hey guys! Here’s where you can find the first info on the Half-life Simulation Lab. It’s perhaps a bit safer than the real thing? Unless, of course, you’ve taken someone’s M&M’s and then you could have a whole different kind of meltdown! Someone stop me!

This is just the first post, you’ll post your results under a second post that will be just for your class period. I’ll probably write that post around Monday or so. Don’t forget that your results must be posted by next Friday, Jan. 11, by midnight on the post for YOUR CLASS – not this post (and yes, that can be your webpost for the week!). The lab report will be due written up in your lab book on Monday, Jan. 14.

By the way, you don’t have to use candies; you may use coins or anything else that has two sides. Please note that you are to post the number of “radioactive” nuclides remaining after each toss.

Just to clarify, everything on the lab sheets will go in your lab book. Title, Objective, Procedure, Observations (with data table), Conclusion, and Questions. Don’t forget that your graph needs to be drawn on graph paper, folded in half, and attached in your lab book. It can be stapled or taped (neatly, nothing sticking out of the lab book). And don’t forget that the analysis questions, calculations, graph, etc., go after your conclusion. Happy counting! 🙂