Physics 2-20-24 Archimedes’ Principle

PHYSICS: So when you were floating in the pool this summer, did you enjoy your fellowship with buoyant forces? πŸ™‚ From Wednesday – Archimedes’ Principle.

Great topic for investigation! Speaking of which – what did you find? When the kid jumped out of the boat, did the water level rise, fall, or stay the same? Hmmmm…..

flickr photo by marlana

Hon Chemistry 2-16-24 Half Life

HON CHEMISTRY: So what do you figure is the half-life of a banana? But I digress…. Here’s our work on half-life problems.

Have fun with the half-life simulation lab! Be sure and post your data in the Half Life Lab web post by the time listed on the syllabus. Don’t forget to include pics and your graph! The lab report is to be submitted as a PDF 2X by the due date listed on the syllabus. πŸ™‚

flickr photo by Caro Wallis

Hon Chemistry Half-Life Simulation Lab

HON CHEMISTRY: Hey guys – this is where honors chemistry will post results for the Half-Life Simulation lab. You’ll just list your data from the first data table as a comment – just like you comment every week, except this time you are just listing the data from the first data table.

Remember, 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 report on that you will submit as a PDF to Google Drive and – Title, Objective, Procedure, Observations (with data table), Conclusion, and Questions. Don’t forget that your graph needs to be either a full page graph that you do on Excel or a similar program, or you can draw a full page graph on graph paper, scan a very clean, sharp copy and copy it into your lab report. And don’t forget that the analysis questions, calculations, graph, etc., go after your conclusion.

Happy counting – and wait until AFTER the lab to snack!! πŸ™‚

flickr photo by Jared Browarnik

Hon Chemistry 2-15-24 Radioactive Decay & Half Life

HON CHEMISTRY: How’d you like writing writing nuclear equations to represent radioactive decay? Maybe a tad bit easier than writing chemical equations? Don’t forget to memorize the nuclear symbols for alpha particles, beta particles (electrons), positrons, neutrons, and protons. Not nearly as bad as polyatomic ions?!?

Great discussion of half life! Do you need a formula for the problems or can you think through them?

Photo by Damiano Lingauri on Unsplash

Hon Chemistry 2-14-24 Properties of Radioactive Isotopes

HON CHEMISTRY: So ordinarily it looks like just any old hunk of rock, but this is a picture of uranium ore under UV light. Pretty cool, huh?!? Here’s our beginning discussion of the unique properties of radioactive nuclides. And as a bonus, this vodcast has a head start at looking at nuclear equations. Woohoo!!

Hon Chemistry 2-13-24 Intro to Radioactivity

HON CHEMISTRY: Recognize this symbol?! Here’s the lesson for today. First, a look at some of the homework from last night, and then onward to chapter 21!

Speaking of – 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!!

By the way, when you get a chance, read about the life of Marie Cure – fascinating woman of science with an incredible story!

Physics 2-12-24 Newton’s Law of Universal Gravitation

PHYSICS: Wait! There’s a fourth law? Yep – Newton’s law of universal gravitation! So when you jump off of something, the Earth moves, huh?

You’ve learned little g, now you know big G! Good job setting up the problems, also make sure you can apply the concepts.

Ready to escape? πŸ™‚

Physics 2-10-16 Newton's Law of Universal Gravitation from Tammy Skinner on Vimeo.

Hon Chemistry 2-12-24 Isotopes & Average Atomic Mass

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

Today we talk about isotopes and calculating average atomic mass. Make sure you practice all the ways to write 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!

Here are some answers for tonight’s homework:

#19) 39.95 u
#20) 10.00 u
#34) 9 x 10^12 more dense

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! πŸ™‚ )

Image source IBM Almaden Research Center

Chemistry 2-9-24 Chapter 8 Overview & Practice

CHEMISTRY: God bless you as you prepare for your quiz and test!! Here’s our overview of the quiz and test from today. After that is practice on completing and balancing equations from Worksheet 3 – and I added some extra practice from different classes.

Have you checked out the Ch 8 Test Stuff to Know sheet? Good stuff! Key to a good test results – memorize what you’re supposed to have memorized and PRACTICE EVERYTHING! You’ve got this!