Chemistry 2-22-13 Periodic Trends, Pt. 2

CHEMISTRY: Wow! We finally finished the chapter!! Here’s the lecture from Friday – second ionization energy, electron affinity, ionic radii, valence electrons and electronegativity. Whew! Lots of stuff to know, and lots of stuff to be able to apply!

Homework tonight is Thursday night’s homework. You also need to do the pre-write up for the lab that we’re doing Monday.

Good luck studying for your test – you need to start today! Be sure to watch the videos at periodicvideos.com! Have you checked out the Chapter 5 Stuff to Know Sheet on Edline? And don’t forget the interactive review games with the online text book – a great way to see what you know, and also www.sciencegeek.net. The Unit 2 section on that would be a great place to practice and check to see if you’ve learned what you think you’ve learned.

Also, here’s a copy of the Chapter 5 Review Worksheet – which isn’t really a review worksheet, more of a sample test. God bless you as you study! I’ll be praying for you!!


flickr photo by Ari Helminen

Chemistry 2-21-13 Atomic Radii & Ionization Energy

CHEMISTRY: Here’s the lecture on the first periodic trends – atomic radii and ionization energy. You made some great connections today! Let’s finish second ionization energy tomorrow and other periodic trends tomorrow.

Homework is for tonight is Wednesday’s homework, except the lab pre write-up is not due til Monday.

Hey, as you are studying for the test (and you are studying, aren’t you?!?), don’t forget the element videos at periodicvideos.com. Wait – did I say test?!?


flickr photo by canonsnapper

Physics 2-21-13 Bernoulli – Part 1

PHYSICS: So were you surprised about the effect of change in surface area on the velocity of water, and especially the pressure of water, flowing through a tube? Thaaaaat explains how a calm ride on a lazy river can turn crazy in just a few seconds! Here’s the lecture from Thursday on Bernoulli – Part 1.

Today we concentrated on quantitative applications of Bernoulli’s Principle and a few practical applications. Tomorrow we’ll take the practical applications to an even higher level (pun intended!). That’s the part I like best. ๐Ÿ™‚

Homework – thLAB: Hydrodynamics

Hon Chemistry 2-21-13 Dipoles & Intermolecular Forces

HON 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.

Now to seriously start studying for the test! Have you practiced Lewis structures and drawing ionic bonding? Great idea!! Also, don’t forget the interactive review quizes in the online textbook and also 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!


Image Source Gaurawa at http://www.dpchallenge.com/image.php?IMAGE_ID=523181

Physics 2-20-13 Pascal’s Law

PHYSICS: Did you realize that fluids could produce that much force? Make’s you wonder at the awesome way God designed those beautiful under water sea creatures to withstand so much pressure, doesn’t it? This little creature is a lionfish from the waters of Lembeh, Indonesia. Oh, and here’s the lecture from Wednesday on Pascal’s law and hydraulics and the like.


flickr photo by CW Ye

Chemistry 2-19-13 p-Block Elements

CHEMISTRY: Wow! There’s a ton of interesting and important stuff to know about the p block elements! To make things a bit easier for you, I’ve posted a vodcast that has all the notes on the p block in one place. Don’t forget to pay close attention to properties (physical & chemical), occurrence, and uses.

As you are studying, make sure you go back and practice figuring out the period, block, group, and type of element from the electron configuration. And don’t forget the topics I asked you to research for yourself: the nitrogen cycle, arsenic poisoning – why it’s called inheritance powder, the symptoms, and the details of the Marsh test.

The videos you need to watch for the p-Block are carbon, nitrogen, oxygen, fluorine, and chlorine. http://periodicvideos.com/

Have you got the other questions from the d block elements researched and answered already? – The role of transition metals in gemstones (know colors and elements), the role of transition metals in alloys (know names, elements and uses), where the phrase “mad as a hatter” comes from, and the symptoms of mercury poisoning and why you should be careful if you eat a lot of fish! Check out the Chapter 5 Stuff to Know Sheet sheet for more.

p-Block elements:

Physics 2-14-13 Archimedesโ€™ Princple

PHYSICS: So when you were floating in the pool this summer, did you enjoy your fellowship with buoyant forces? ๐Ÿ™‚ Here’s the lecture from Thursday – Archimedes’ Principle. Great topic for investigation! Speaking of…. don’t forget for the Buoyancy thLAB that you can use any kind of plastic bowl or cup that is small enough to fit inside another bowl that you can use to measure, yes I said measure volume.


flickr photo by marlana

Hon Chemistry 2-13-13 Metallic Bonds

HON CHEMISTRY: Molten iron, wow! Here’s the lecture from Wednesday on metallic bonding. Aren’t you glad there are no structures to draw?! Make sure you can use the electron sea model to explain the properties of metals. Also be able to compare and contrast all three types of bonds.