Chemistry 2-8-23 Single Replacement Reactions & the Activity Series

CHEMISTRY: Great job with single replacement today. Super important – ALWAYS check 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 Andrey Svistunov on Unsplash

Chemistry 2-7-23 Activity Series & Reactions with Oxides

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

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

HW UPDATE: Because we didn’t finish single replacement reactions today, the book homework for tonight is cancelled for now. BUT that just means you have extra time to study for the quiz on Friday!

We’ve done 10 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

Chemistry 1-23-23 Describing Chemical Reactions

CHEMISTRY: So you learned last semester how to determine if a chemical reaction has taken place. How would you go about describing a chemical reaction to someone? Here’s our discussion from today on writing balanced chemical equations!

First step in writing equations? Make sure you can write chemical formulas! First step to that? Memorization!!

So tell me again – how do you know if a chemical reaction has occurred? Here’s another hint – not necessarily a good idea to try to make your own blue flame thrower! Click here to watch the Periodic Videos Blue Flame Thrower Video


Photo credit: Periodic Videos Blue Flame Thrower Video

Chemistry 1-18-23 Chapter 7 Test Overview

CHEMISTRY: God bless you as you study! Here’s our great overview of the test from today and a look at some chemical names and formulas and oxidation numbers. Did you find the Chapter 7 Stuff to Know sheet? Be sure and use it as a road map for your studying. I know it seems like a lot, but you can do it!

First priority – make sure that you have memorized EVERYTHING. Then, practice!!! Go to the Physics Classroom as a guest, sciencegeek.net 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 sciencegeek.net. That’s always some good practice. And don’t forget about polymers!

I’ll be praying for you! You can do it!!


Photo by Artem Bryzgalov on Unsplash

Chemistry 1-17-23 Polymers

CHEMISTRY: 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 for Tuesday.

Help session Thursday morning, 7:30 AM.

Some items for contemplation: how does the function of something relate to its structure. For example, why are certain plastics recyclable and others not…and what about dishwasher and microwave safe? Hmmmmm…


Image source: http://www.packtech.ca/pb/images/img32161428fffbe41e07.jpg

Chemistry 1-11-23 Molecular Formulas

CHEMISTRY: Hey guys! Awesome job with empirical formulas, and now you’ve conquered writing molecular formulas! Here’s the lecture from Wednesday. It’s just like writing empirical formulas but with a twist at the end!

HW UPDATE: All the rest of the homework that was for Tuesday is now due Friday. The homework that is on the syllabus for Thursday (the five extra problems) is changed for now and will be due next week.

Have you started preparing for the test? It will be over ALL of chapter – plus the small bit from chapter 3. Be sure and checked out the Stuff to Know sheet for all of chapter 7 under the Test Info tab!


flickr photo by Sebastian Mary

Chemistry 1-10-23 Empirical Formulas

CHEMISTRY: So, would you like to be Greg on CSI? Great work with empirical 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.

HOMEWORK UPDATE: Omit #38 & 39 for now.

Let’s crank it up a notch tomorrow! πŸ™‚


Image source www.dnr.mo.gov/env/esp/images/prettytesttubes.jpg

Chemistry 1-9-23 Percent Composition

CHEMISTRY: Great job today! Way to apply chemistry to your everyday life!!

I think you’ll find that percent composition problems are super easy to catch on to. First, though, be sure you know which “type” of percent composition you’re trying to fine. Also make sure you can write chemical formulas (I won’t give them to you!) and that you’ve memorized the formulas for acids and those chemical names and formulas for common substances. It’s just plug and play from there! πŸ™‚


flickr photo by ΀ϊ΢΢Β₯