Physics 10-29-12 Equilibrium Problems & Intro to Newton’s 2nd Law

PHYSICS: So an object at rest can be at equilibrium, but what about an object that is moving? And how does equilibrium relate to Newton’s first law? Or Newton’s second law? And what if you don’t have balanced forces. Here’s the lecture from Monday on just that! Now remind me, net forces produce what?

Photo: Joe Armao

Honors Chemistry 10-29-12 Chapter 7 Test Review

HONORS CHEMISTRY: Do you feel like you are starting to go a little crazy? Lots and lots to be responsible for in this chapter, huh? God bless you as you study for the test! Here’s the overview of the test that we did today. Also, did you find the Chapter 7 Stuff to Know sheet on Edline? Click here on the name, if you need one. I know it seems like a lot, but you can do it! (Remember that you don’t have to know diatomic molecules for the test, just for the future.)

First priority – make sure that you have memorized EVERYTHING. Then, go to and make sure you can write and name chemical formulas. Practice, practice, practice!!! Then start practicing the different kinds of problems – do at least three of each one of them. And also try those on That’s always some good practice. Good luck – I’ll be praying for you! You can do it!!

flickr photo by libraryman


Chemistry 10-29-12 Chapter 7, Pt 1 Overview

CHEMISTRY: How are you doing in studying for the chapter 7 – Part 1 test? Is there something you need help on knowing how to do? Go back and watch the vodcasts from that lecture – this will be like having me sit beside you and teach you all over again! Very good way to study – practice with me as I go along!! (BTW – don’t forget that I added laughing gas to list of chemicals to know for the test. It is dintrogen monoxide, or nitrogen (I) oxide.)

One of the best ways to study is practice! But how will you know if your answers are correct? A great way to practice correctly is to go to! Three sections in Unit 3 would be very helpful: Writing Compound Formulas #1, Binary Covalent Nomenclature, and Writing Compound Formulas #2.

A great resource for knowing what will be on your Part 1 test is this updated Chapter 7, Pt 1: Stuff to Know & Know How to Do sheet. Wow! I know it seems like a lot to memorize, but you can do it!

First priority of things to know how to do – make sure you can write and name chemical formulas!!! Practice, practice, practice! Then start on oxidation numbers. You can do it! I believe in you!! And I’ll be praying for you! 🙂

flickr photo by pierre pouliquin


Hon Chemistry 10-26-12 Polymers

HON CHEMISTRY: Oh, my word! We finally finished the chapter! Did you realize molecules could be that large? And so many of them! But don’t you think polymers are cool? Here’s the lecture from Friday.

Some items for contemplation: why are certain plastics recyclable and others not…and what about dishwasher and microwave safe?

ADDITION TO HOMEWORK – Add to your homework for this weekend the Standardized Test Prep at the end of chapter 7. Be sure and show your work on the problems. BTW – Here’s a copy of the Polymer Worksheetif you need it, and it’s also on the back of your syllabus. Test Tuesday! Have a great weekend!!

Polymer Worksheet

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CHEMISTRY 10-25-12 Oxidation Number Practice

CHEMISTRY: Do you feel like we been playing hopscotch with the charges and oxidation numbers of atoms? Hopefully everything is a little clearer after today. Here’s the extra practice we did. And click here for a copy of the Pre-Test Worksheet that I handed out in class today. It is due tomorrow.

So many rules!! You’re starting to do really well with formulas and naming, but make sure you keep practicing by using your notes to follow the rules we’ve outlined in class – and MEMORIZE the polyatomic ions and oxidation rules! This vodcast will be great review for the test!

Don’t forget to write up the lab for tomorrow – Title, Objective, Procedure, and blank data table. If you forgot your lab book, you can write it on notebook paper and then re-copy it into your lab book later.

flickr photo by Pink Sherbet Photography

Hon Chemistry 10-24-12 Empirical & Molecular Formula Review

HON CHEMISTRY: I was really impressed today with the progress you’ve made on mastering empirical and molecular formulas! Here’s the short review that we did on #40 and 52.

Are you starting to catch on to the steps? It will be good for you to memorize the steps, but would it not be just tons better to understand why you need each step – backwards and forwards, so then you wouldn’t need to memorize them at all!

Did you get the message that you need to do a pre-write for your lab tomorrow? Title, objective, procedure, and blank data table.

flickr photo by Darwin Bell

Chemistry 10-24-12 Oxidation Numbers

CHEMISTRY: One man’s rust is another student’s lesson in chemistry! From Wednesday – here’s the lecture on oxidation numbers. Now go out and apply them! Need help? Don’t forget the practice at Go to And don’t forget, help session Friday morning at 7:15ish A.M.

UPDATE: We are not doing the lab until Friday! My bad!! The lab write-up is Thursday night’s HW and is due on Friday. Sorry about that!!

Good luck studying for the polyatomic ion quiz on Friday, but is that good enough? What about the test Tuesday? For that you need to have memorized (and be able to use!!): polyatomic ions, monatomic ions (but you can get these off the periodic table), acids, prefixes, the chemical names and formulas of common substances, and the oxidation rules.

That’s a lot, but you can do it! And make double dog sure you are working hard at memorizing it all now!!

Image source:, Photographer: Ian Britton

Chemistry 10-23-12 Chemical Formula Practice & Worksheet

CHEMISTRY – Yeah, don’t you wish it was as easy as this? The rules for writing chemical formulas, I mean. But no, there are about 50 million, and you have to keep them all straight! Do you need some extra help? Help session Friday morning, 7:15ish A.M.

Click here for the Chemical Formulas Worksheet.

First step – memorize what you are supposed to memorize – polyatomic ions, rules, etc. Next, organize your notes into what you do for ionic compounds, those with metals and polyatomic ions, and what you do for molecules, those with only nonmetals and metalloids. Then analyze every single compound you have to name or write a formula for – is it ionic? then you only use the Stock system. Is it a molecule – then you can use the Stock system or prefixes. Do you see what I mean?

flickr photo by Gord McKenna


Hon Chemistry 3-23-12 Molecular Formulas

HON CHEMISTRY: Happy Mole Day!!

Great job with empirical and molecular formulas today! The hardest part is that it’s not a set formula for you to plug and play, but if you’ll keep in mind that you’re really just looking for subscripts which are just moles, you’ll be able to think it through. Percent to mass, mass to moles, moles to smallest whole number ratio.

And then also remember what molecular formulas are – just a multiple of the empirical formula. Keep that concept in mind, and you’ll have no problem remembering to divide the molecular formula mass by the empirical formula mass to find X! Easy peasy! Help session?

flickr photo by Elizabeth The Queen Of All Things


Physics 10-23-12 Equilibrium

PHYSICS: So, how is the balance in your life? Here’s the lecture from Thursday on net force, equilibrium, and equilibrants. Were you experiencing a little déjà vu? Tonight’s homework is Pg. 143 – 146: 7 – 12; tomorrow night it’s the Equilibrium Forces Worksheet. Good job today!

Thank you, Ben and Darby, for being such good sports!!

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