Acids, Bases, & Intro to pH, 5-14-13

Posted on May 14, 2013 by Ms. Skinner

Great intro to the properties of acids and bases! Do you think you can apply them now?

You did a great job on figuring out pH. Acids mean H30+ ions and pH, bases mean OH- ions and pOH. Get the pH of an acid straight from the concentration of the acid. Get the pH of a base by first finding the pOH straight from the concentration of the base and then subtracting that from 14. No problem!! So how do you think someone would use pH?

Don’t forget about learning those indicator colors I told you about. Can you think of anything else that might be a natural indicator? What about tea? Have you noticed how it changes to a lighter shade when you add lemon?

Chemistry 5-13-13 Limiting Reactant & Percent Yield

Posted on May 13, 2013 by Ms. Skinner

CHEMISTRY: Stoichiometry always reminds me of baking – what about you?

Hey, we did it! We finished chapter 9. Here’s the lecture from Monday on limiting reactant and percent yield – yet another couple of applications of stoichiometry.

flickr photo by las – initially

Hon Chemistry 5-10-13 Gas Laws, Pt. 2

Posted on May 11, 2013 by Ms. Skinner

HON CHEMISTRY: Okay, for the record, water balloons do not obey Avogadro’s Law, but gas balloons do! Equal volume balloons contain the same number of molecules. Yay, another great conversion factor!!

How’d you like playing around with the gas laws? Super cool the way you maneuvered it around like that to use something like density!

Sooooo… no test Monday! Check for the update on the syllabus. Have a great weekend!!

flickr photo by meg’s my name

Chemistry 5-10-13 Stoichiometry

Posted on May 11, 2013 by Ms. Skinner

HON CHEMISTRY: Wow! Great job today – and I wasn’t even there 1st and 2nd period! Thanks for letting me go to kindergarten graduation!

Here’s your first lecture on reaction stoichiometry. You’re doing a great job applying what you remember about moles from earlier this year! Dont’ forget the keys! Now all you need is some practice and you’ll have it down pat.

BTW – here’s the vodcast I showed 1st and 2nd periods. You won’t be doing the thLAB on making cookies. Instead, this weekend you will be doing the thLAB: pH Paper. Won’t smell as good.

Chemistry 4-25-13 Double Replacement & Combustion Rxns

Posted on April 25, 2013 by Ms. Skinner

CHEMISTRY: Wow! Can you believe we finished all 17! Here’s the lecture on the review and new notes on double replacement and combustion reactions.

Now that you’ve got everything on paper, let’s play with the real thing on Monday. First, the quiz, then we’ll do the experiment! Tuesday you’ve got to remind me to show you this really cool demo on combustion rxns. I call it “flaming bubbles”! But don’t forgot – we’ll start with the quiz on Monday! Good luck studying, I’ll be praying for you!!

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Chemistry 4-24-13 Single Replacement Reactions

Posted on April 24, 2013 by Ms. Skinner

CHEMISTRY: Good job today on single replacement reactions! And today you got a head start on the activity series. Good job!

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!!

Chemistry 4-23-13 Synthesis & Decomposition Reactions

Posted on April 23, 2013 by Ms. Skinner

CHEMISTRY: Wow! So that’s where the pretty light comes from! Great job on synthesis and decomposition reactions. Now go forth and practice what you learned! (The balancing equations part, not the playing with magnesium part!)

Let me know how the new mic works!

flickr photo by orangegirl

ExploreZone 2013

Posted on April 20, 2013 by Ms. Skinner

Wow! You guys are the GREATEST!! Thanks to you, ExploreZone was a HUGE success! The elementary kids loved it and the high school did too! Everywhere I went, I saw faces with smiles and surprise and awe. You worked so hard, and it paid off. A special thanks to all of you who stayed late Monday setting up and Tuesday cleaning up! I couldn’t have made it without you!!

I took a few pics that you can watch in the slide show below, or click here for a link to all of the pictures on flickr.com. If you’d like to copy a photo, click on the image to open it. Next, right click on the image and select the size you want to view and later copy. The image will re-open and you can either choose to download the size you selected or right click on the image and select whatever option works for you – copy, save, email, etc. I think I’ve made the pictures “public” and you should be able to do all this, but if something doesn’t work, holler!

What are your favorite memories? Post them below! Here are some of my favorite quotes:

“Whoa, how’d you do that?”

“Aaaaaaaaaaaaaaaahhhhhhhh”

“Where can you buy that?”

“Oooh, it’s going to punch holes all the way through him!” (elementary kids are brutal!)

“Can you eat it?”

And my all time favorite – “Ooh gross! Do it again!”

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Chemistry 4-17-13 Describing Chemical Reactions

Posted on April 17, 2013 by Ms. Skinner

CHEMISTRY: So tell me again – how do you know if a chemical reaction has occurred? Here’s the lecture on the evidences of a chemical change and the intro to balancing chemical equations. Great to be back to chemistry!

flickr photo by vmaddalena

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Lost Beneath the Comstock Lode….Last Post

Posted on April 9, 2013 by Ms. Skinner

Do you need the easy button?? How’s it going? You are going to survive, I believe in you!! I’d wish you good luck, but I know it really doesn’t have a thing to do with luck. You’ve been working really, really hard, and I know it’s going to pay off. I’m praying for you! I’ll be watching the site for questions that you might have for the next hour or so. I love you!!

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SBEC Chemistry and Physics

Use what talents you possess, for the woods would be silent if no birds sang except for the best. – Henry van Dyke

Category Archives: Chemistry Notes & Review