Hon Chemistry 10-31-23 Binary Molecular Formulas

HON CHEMISTRY: Do you feel like you have letter and numbers swimming in your eyes? This is one of those times that paying attention to details is super, super important! Here’s the lecture from Thursday on writing formulas and names for binary molecular compounds. Part of it’s really similar to what you learned to do for ionic compounds, but another part is totally different. Details!!

Make sure you keep everything straight. Do something that will organize all the information for you, so you won’t get confused. Also, don’t forget the lists you have to memorize – it’s getting larger and larger!! And practice, practice, practice!!!

Need extra practice? Help session?

flickr photo by Roger Smith

Physics 10-31-23 Friction & Forces on an Incline Problems Review

PHYSICS: Boxes and block, all slipping and sliding… Is it starting to make a little more sense? Here’s a look at some of the problems on an incline that might have a twist. A little extra fun! 🙂

You’re getting it…keep sledding and watch out for net forces!

Photo by Erda Estremera on Unsplash

Physics 10-30-23 Friction at an Angle and on an Incline

PHYSICS: Who knew snow skiing could be so complicated! Well…friction problems on an incline anyway. First – here’s our our look at the homework wit forces at an angle. Next, our discussion of friction problems on an incline.

Remember, drawing the diagram is super, super important. Label all the forces and apply the concepts you know about net forces and resultant forces – let it tell you a story. 🙂

Here is some info you might find helpful in the future:
Wed night answers

flickr photo by t i g

Physics 10-27-23 Friction & Normal Force & Forces at an Angle

PHYSICS: Why don’t things that are moving just keep moving? And then what happens to your applied force when you pull or push something at an angle?

Super important to remember – it’s not forces, but net forces that produce acceleration. So this means there are a couple of different ways to look at Fnet – a whole made up of parts and something that produces accelerations. Good stuff!

Another good reminder – you can find Ff a couple of different ways – it’ll be part of a net force equation and can be found from the coefficient of friction equation. If and ONLY if your object is moving at a constant velocity, Ff will equal Fa. Fn is only sometimes equal to Fw. If your object is pulled at any angle (or pushed), Fn will be a part of Fnet in the vertical direction.

Whew! 🙂

Photo by Antonia Lombardi on Unsplash

Hon Chemistry 10-26-23 Binary Ionic Compounds Formulas & Names

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

Today we concentrated on binary ionic compounds. Tomorrow we’ll look at 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!

And speaking of polyatomic ions, how are you doing with memorizing those?!?

flickr photo by ludie cochrane

Chemistry 10-25-23 Chapter 1 Test Overview

CHEMISTRY – Are you ready? God bless you as you study! Here’s our overview of chapter 1 and the test – good stuff!!

Make sure you aren’t just reading your book and notes. First, memorize the facts, then go back and make sure you can apply the concepts. Study examples, make your own examples, practice making questions. And don’t forget, if you are getting lost with everything you need to know, or if you’re not sure how to study, Chapter 1 Stuff to Know Sheet under the Test Info tab.

If you want some interactive practice for the test (GREAT IDEA!!) here are a couple of great reviews from The Physics classroom. These are optional, so sign on as “Guest” if you want to do them:
Chemical vs. Physical Properties
Metals, Nonmetals & Metalloids
States of Matter
Energy & Chemical Changes
Classification of Matter


Also remember there are great review games that are in the Student Premium section of the online textbook. You can do this – I believe in you! I’m praying for you!!

Image source wordle.net

Chemistry 10-23-23 Elements & Intro to the Periodic Table

CHEMISTRY – Wow! Do you realize what we just did?!? We finished the chapter!!! Did you feel like today was mostly review?

HW UPDATE: Instead of the book HW that’s on the syllabus for Monday night, do the Chapter 1 Sample Test. You can get a copy from me or it’s also here under the Worksheet tab. Both the sample test and the research on the three elements will be due Wednesday in class.

There are three elements that you will research for the test – Cu, Si, and P. A great resource to research the elements (and the only one you need besides the textbook) are these video clips on copper, phosphorus, and silicon that a group of chemistry researchers have put together at www.periodicvideos.com. Watch these and take notes. The information on these video clips will be on the test.. If you can’t get the phosphorus video to work, use this link on YouTube https://youtu.be/LSYLUat03A4

Hey, have you had a chance to check out the chapter 1 study suggestion sheet? Let me know if there is anything you need help with before the test! (And you’re still learning the symbols of the elements, right?!?)

flickr photo by Geoff Jones

Chemistry 10-20-23 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