Wednesday, January 16, 2013
The Jedi Mind Trick
While it's not quite mind control of epic Jedi proportions, there's a new development in the civil war in Syria. Apparently there are reports that the Syrian government used a chemical weapon called BZ against rebels in the city of Homs. Like many chemical and conventional weapons being used these days, BZ was discovered during the Cold War and attempts to weaponize it were made by both the United States and Soviet Union. You can read the story about the Syrian use of BZ here and check out the chemistry of BZ here. The chemistry information is definitely worth a glance if for no other reason than it's a complex molecule and it looks cool.
Thursday, January 3, 2013
Chemistry, Aquaman, and the US Military
Welcome back men! This article will make a little bit more sense when we start talking about gases and the rules they play by, but it's still pretty cool anyway. Actually, most stuff that comes out of DARPA is pretty cool. Read it here.
Labels:
chapter 10,
chapter 11,
gases,
military
Friday, November 16, 2012
Lewis Structures
In chapter 6, we're going to be covering Lewis structures for both single and multiple covalent bonds. Check out this interactive tutorial for some great practice!
Labels:
Chapter 6,
covalent bonding,
Lewis structures
Thursday, October 25, 2012
The Periodic Table and Sam Kean
The Disappearing Spoon by Sam Kean is a great book with lots of interesting stories about the elements such as:
- Superfluid helium that defies gravity
- Antimony pentafluoride - an acid with a pH of -31 (100,000 billion billion billion times stronger than HCl)
- The cobalt-60 dirty bomb that thankfully hasn't ever been built (as far as we know)
- How Linus Pauling figured out how chemistry works. Really.
- Cadmium-tainted rice in Japan
- Prontosil - the antibiotic that predates penicillin
- Acute beryllium disease
- How cigarettes can also kill you with radioactive polonium
- Why the Washington Monument is topped with a pyramid of aluminum
- Why lithium works as an antidepressant
- How Wilhelm Rontgen went out of his way to prove to himself that he really didn't discover x-rays. Even though he did.
- Ice X
- How drinking beer lead to the development of the modern particle collider
- "Tools of Ridiculous Precision
And much more! Read it! You can go here to preview most of the first chapter for free (click on the book cover)!
Tuesday, October 23, 2012
Periodic Trends
Go here for a very simple interactive diagram that describes trends in the periodic table with regards to atomic radius, ionization energy, electron affinity, and metallic character.
Labels:
atomic radius,
chapter 5,
electron affinity,
ionization energy
Atomic Orbitals Animations
If you're having a little trouble visualizing atomic orbitals, this might help. It's a 3D diagram of all of the orbitals that you can manipulate. Check it out here.
Labels:
atomic orbitals,
chapter 4
Monday, October 22, 2012
Chemistry + Biology = Nobel Prize
In case you missed it, the Nobel Prize in Chemistry was awarded last week to two American scientists, Robert Lefkowitz and Brian Kobilka for their work on how cell signalling molecules work. Check out the summary of the Prize here.
Labels:
molecules,
Nobel Prize
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