Hon Chemistry 4-11-12 Stoichiometry

HON CHEMISTRY: Hey guys, here’s your first lecture on reaction stoichiometry. You did 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. 🙂

Physics 4-10-12 Sound Intensity and Resonance

PHYSICS: Hey guys, how in the world do you lose a lecture? Well, I can’t seem to find where I saved today’s lecture, so here’s a blast from the past on sound intensity and resonance.

Couple of items to apply from today’s discussion – so how does the whole hearing thing work? I mean, I know the little bones in your ear move, but why? Is resonance involved? Great item for application/discussion. And here’s another – why would different violins produce different sounds? I mean, is a Stradavarius valued so highly just because of the name? Let’s talk more about that!

Chemistry 4-10-12 Intermolecular Forces

CHEMISTRY: Well, here it is, the very last lecture from chapter 6 – intermolecular forces. (Don’t forget they’re also called van der Waals forces!) Tons of application, from bugs walking on water to little fishes breathing dissolved oxygen.

Need extra help or practice? Help session tomorrow, Wednesday, morning at 7:15ish A.M.

Good luck studying for the test – have you practiced Lewis structures and drawing ionic bonding? Great idea!! And don’t forget www.sciencegeek.net. The Unit 3 section would be a great place to practice and check to see if you’ve learned what you think you’ve learned. I’ll be praying for you! You can do it!

Don’t forget that if you will be absent Thursday for the band trip, you will take your test tomorrow during your class and your study hall. You can also ask Mr. Berryhill if you can finish it during 7th period.

Image source digitaljournal.com

Hon Chemistry Help Session Thursday Morning, 7:15ish A.M.

HON CHEMISTRY – I believe in you – you can do this!! It won’t come by accident, though. Practice, practice, practice! Have you visited sciencegeek.net? There is excellent practice there.

Are you feeling overwhelmed? I know it seems like a lot, but you can do it! First priority – make sure you can write chemical formulas, because you can’t balance equations without that!!! Next, start practicing the different kinds of equations. And don’t forget, there’s some application association with this chapter as well. Don’t just know, know why!!

Help session tomorrow morning, 7:15 A.M. Good luck – I believe in you! And I’ll be praying for you!

Chemistry 4-4-12 Water Wire Lab

CHEMISTRY – I love watching you play with light bulbs in lab today! So it worked, and then it didn’t, and then it did! That’s great! I love the way you kept experimenting with ideas to see how to make those light bulbs light up! Do you know that’s when you often learn the most and grow the strongest – from failure?

Here is a copy of the Water Wire Take Home Lab. Let me know if you have any questions about what to do with this take home lab. I want you to do all parts of the lab. You will need to get the light bulb from some place like Radio Shack. I have skinny popsicle sticks that will work really well, if you’d like to use them. One word of advice – try it first with a smaller voltage battery than the 9V battery suggested on the sheets. Last year, we found that the 9V batteries kept blowing the light bulbs. (After today, does that make sense?) You might also consider getting a light bulb with a higher voltage, but I can’t promise how it will work.

Don’t forget to also do the last part of the lab – to test five different liquids at your home to see if they are ionic solutions. You will write this up in your lab book and you will include all your results in the Observations section of your lab report. Check your syllabus for an approximate due date, but I am going to change it so it doesn’t conflict with the history project due date. Good luck with it, and have fun!

Chemistry 4-3-12 Metallic Bonds

CHEMISTRY: Hey guys! Here’s the lecture on metallic bonding… make sure you can explain the properties of metals. Not just what metals do, remember, but why they do it (using the Electron Sea Model). We’ll play with one of the properties tomorrow!

Speaking of tomorrow, don’t forget about the 3-D Molecule Computer Lab that is due by the end of the day tomorrow. Be sure and save it to the server at school in your chemistry class folder. Follow the instructions on the 3-D Molecule Computer Lab instruction sheet. Good luck!

Whoops – I almost forgot to post the Water Wire Take Home Lab. Click here for a copy.

UPDATE: Here’s an updated vodcast on metallic bonds – hopefully the sound will work on this one.

Chemistry 4-2-12 Ionic Bonding

CHEMISTRY: Hey guys, here’s the lecture on ionic bonding – well, the first part anyway. Remember, when you write ionic bonding, you’re not trying to arrange a single structure like you do with Lewis structures. Instead, you’re writing an equation that shows electrons being lost by one atom and gained by another atom. Make sure you put the dots in the right order. We’ll finish metallic bonds tomorrow.

UPDATE: Here’s an updated vodcast on ionic bonds – hopefully the sound will work on this one.

Image source:nearingzero.net

Hon Chemistry 3-30-12 The Activity Series

HON CHEMISTRY: Well, here it is, the last of the lectures from chapter 8. A couple of things – make sure you’ve memorized the activity series, but just as importantly, make sure you know how to use it! Those guidelines I gave you in class should really help. Good luck as you study for the test on Thursday! I’ll be praying for you!!