Physics 10-22-19 And Did the Hammock Crash?

PHYSICS: Great work today thinking through this one and also the “Wanda has a sign” problems! How you look at problems from the beginning can make a huge difference – huh?

A couple of things that work for me when doing equilibrium, etc., problems – first, draw them. Then go back through and separate resultants into components. If an object is in equilibrium, then there are no net forces – all the forces in the x direction balance – everything left equals everything right, and all the forces up equal all the forces down.

You’ve got all the ammo you need, now go forth and conquer!

Answers for the Equilibrants II worksheet are below:

  1. Fn = 3430 N upward against feet
  2. Fn1 = Fn2 = 1890 N upward on each foot
  3. F forward = 4.59 N
  4. T1 = T2 = 1760 N
  5. T1 = 1360 N and T2 = 680. N


flickr photo by Nomadic Lass

Hon Chemistry 10-22-19 Chemical Formulas with Polyatomic Ions

HON CHEMISTRY: Great job today! Remember it’s like baby steps, first binary ionic compounds, and now, formulas with polyatomic ions. Begin learning them now! And practice, practice, practice!!

Another great idea, click here for a copy of the Hints for Naming Chemical Formulas Flow Chart, or find it under the Worksheet/Handouts Tab. Follow it every time you name chemical formulas!!


flickr photo by skycaptaintwo

Hon Chemistry 10-21-19 Chemical Formulas – Part 1

HON CHEMISTRY: Great start on writing and naming chemical formulas! What’d you think? Do-able? Absolutely!!

HW UPDATE – Do both practices for tonight, but you do not have to make a 100 on the practice with polyatomic ions. On that one, you need to get the names right, but you do not have to get the formulas right.

Today we concentrated on binary ionic compounds today with a look at naming compounds with polyatomic ions. Tomorrow we’ll write formulas for compounds with polyatomic ions. We’ll go kind of slow to begin with, but make sure to take time to practice, practice, practice, and learn it step by step. You’ll be as lost as ball in high weeds if you let yourself get behind! No audio today, so here’s a lesson from a few years ago.

Hon Chemistry 10-17-16 Chemical Formulas – Part 1 from Tammy Skinner on Vimeo.

flickr photo by ludie cochrane

Chemistry 10-18-19 Classification of Matter

CHEMISTRY: Here’s a mixture that looks like it might be worth investigating – bacon caramel popcorn! I mean, I like bacon and I like caramel popcorn, but bacon caramel popcorn? Hmmmm….

So now that you know about mixtures, could you figure out how to separate one? Keep these notes handy!


flickr photo by joyosity

Physics 10-17-19 Newton’s Law of Inertia

PHYSICS: Remind me again why didn’t that pen go flying across the room instead of dropping into the bottle? Hmmm…..

So what do you reckon is the inertia of this car? Great start today relating mass to inertia! Now go forth and apply what you know to find the mass of your unknown!


Unsplash.com photo by Rodolfo Mari

Chemistry 10-16-19 Chemical Properties & Changes & Energy

CHEMISTRY: So how do you know if something is a physical or a chemical change? Applications, applications! Make sure you can apply what you learned today. Ditto on the law of conservation of mass.

Don’t forget that we will do the thLab: Candle Observation in class tomorrow. Make sure you have a printed copy!


Photo by Yaoqi LAI on Unsplash

Chemistry 10-10-19 Physical Properties & Changes

CHEMISTRY: So how do you know if something is a physical or a chemical change? Applications, applications! Make sure you can apply what you learned today!

Don’t forget that we’re changing the syllabus – we’re doing a lab, but not the one on the syllabus, and you don’t have to print it.


flickr photo by ViaMoi

Chemistry 10-9-19 Intro to Chemistry

CHEMISTRY: We’re finally starting what chemistry is all about! Here’s the lesson from Wednesday. Can you apply the branches of chemistry and types of scientific work? As you go through the chapter, make sure you have the vocab down, and be sure you’re able to apply what you learned each day!

Now….how would you describe this copper ore? Let’s talk about that tomorrow!


Image source bonita-david.com