Monthly Archives: February 2022

Chemistry 2-14-22 Making Gases Pre-Lab & Another Look at Chemical Equations

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CHEMISTRY: Happy Monday. Here’s our quick look at the Balancing Equations Worksheet 3 and then our discussion of the positive tests for carbon dioxide, oxygen, and hydrogen gases for the experiment: Making and Testing for Gases. If you were absent on Monday, be sure and watch this vodcast – it’s required before you can do the lab.

Because of the super short class scheduled for Friday, we’ll move this lab to next Tuesday. Be sure and watch for it on the syllabus. Remember that your pre-lab quiz for this lab is to show me the three balanced equations you’ll need for the experiment and the positive test you expect to see for each gas. I think you’ll have lots of fun with this one. 🙂


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Physics 2-14-22 Escape Velocity & Chapter 7 Test Overview

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PHYSICS: …… and to continue, escape velocity. And that’s it!! Here’s our look back at the chapter.


Photo by SpaceX on Unsplash

Hon Chemistry 2-14-22 Isotopes & Average Atomic Mass

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HON CHEMISTRY: Here’s the full lesson for Monday – even the part we didn’t quite get to! 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! 🙂 )


Image source IBM Almaden Research Center

Physics 2-11-22 Consv of Angular Momentum

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PHYSICS: Spinning fast and spinning slow! Can you explain now using the conservation of angular momentum? Great job today with all of our volunteers!!

Chemistry 2-10-22 The Physics Classroom Practice

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CHEMISTRY: Today you’ll be practicing completing and balancing chemical equations at The Physics Classroom. Log in and then go to your Tasks and Courses and select Writing Balanced Chemical Equations.

Do the Apprentice, Master, and Wizard levels of Writing Balanced Chemical Equations. Write these on notebook paper as you go through the questions to help build the layers of learning in your brain!!. Number the equations and skip a line between each one. You will turn in this work in class on Friday.

If you don’t finish in class, the rest of the assignment is for homework and is due at 8:00 A.M. Friday morning.

Hon Chemistry 2-10-22 Structure of the Atom

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HON CHEMISTRY: So how to you find something you can’t see? Here’s the lesson for Thursday! Be sure and follow the connections the scientists made as they discovered the structure of the atom. Do you think there could be anything smaller than protons, neutrons, and electrons? Hmmmmm……

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.

Here are some extra video clips to go with the lesson for today. They’ll help you review the different experiment that the guys like Thompson and Rutherford did. Click here for the video on the Cathode Ray Tube Experiment that Thompson did, and also for a little history on The Discovery of the Electron. Here’s the other one on The Discovery of the Nucleus.

By the way – do you think you could do what they did – figure out what something’s made of without seeing it? Hmmmm….


flickr photo by Here’s Kate

Physics 2-10-22 Newton’s Law of Universal Gravitation

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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? 🙂

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

Chemistry 2-8-22 Activity Series & Single Replacement Reactions

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CHEMISTRY: What!?! You mean there aren’t little green people on lonely country roads? 😉

Great job applying the activity series to synthesis, decomposition reactions and single replacement reactions! As you practice, go back and check the activity series and your notes on the activity series!

We’ve done 15 so far – how are you doing on memorizing them?! Careful though, don’t just memorize. Make sure you can apply them as well. When you start to work any equation, first determine what type of reaction it is, then figure out what rule applies and follow it to determine the products. I believe in you! You can do it!!


Photo by Alexander London on Unsplash

Physics 2-8-22 Vertical Circular Motion

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PHYSICS: Great job on the vertical circular motion problems! Here’s the short lesson from today, then a look ahead at some of the circular motion problems. Fun times!! 🙂


flickr photo by Jasmic

Hon Chemistry 2-7-22 Chapter 9 Test Overview & a Look at Advanced Problems

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HON CHEMISTRY: I still say stoichiometry is a lot like baking – sometimes you just have to get in there and get your hands dirty! Here is our overview of the test from last Wednesday – before the ice storm. Below that is our look at a couple of of the advanced stoichiometry problems from today.

Again I want to emphasize – the majority of the test is basic reaction stoichiomety, limiting reactants and percent yield. Be sure and give that the most of your study time!

Also, review writing and balancing chemical reactions. Most of the stoichiometry problems will require that you begin by doing just that! There will be just one extra jumbo large problem. You’ve got this!! 🙂


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2 Advanced Stoichiometry Problems from Monday

Photo by Meritt Thomas on Unsplash