Mr. Wilson

[Mr. Wilson @APChem]

Gamma rays penetrate any shielding, but they have very little punch, i.e., they don't harm DNA much.

[Mr. Wilson @APChem]

Radiation is energy traveling through space. Gamma radiation has a very short wavelength.

[Mr. Wilson @APChem]

That was Erin by the way (ran out of room lol)

[Mr. Wilson @APChem]

What is radiation? I know what the book tells me, but I don't understand what Gamma is, if it isn't made up of particles and isn't charged.

[Mr. Wilson @APChem]

One week to go. If you haven't started the summer assignments yet, get on it.

[Mr. Wilson @APChem]

Remember, your first big test is the day after we return to school, and it's on the summer assignments.

[Mr. Wilson @APChem]

Any of you eleven APChemmers doing anything? Better get on it...

[Mr. Wilson @APChem]

You should not need to worry about temperature in a density problem.

[Mr. Wilson @APChem]

Sorry I'm having a blonde moment...about density (again) -how do we incorporate the factor of temperature into the problem? And if we do ...

[Mr. Wilson @APChem]

oops--make the answer in that last tweet 2.55 x 10^-2.

[Mr. Wilson @APChem]

Erin--about problems 1.24 and such--example 1.25 a)--divide 25.5 milligrams by 1,000 to get grams = .0255 grams or, if you wish, 2.55 x 10^2

[Mr. Wilson @APChem]

Beloit AP Chem students, continue to use this account. CTD Honors Chem folks, use the "CTDchem" account instead. Such confusion!

[Mr. Wilson @APChem]

CTD students--my AP students are starting to use this account, so you may use a different twitter account. It's "CTDchem", same password.

[Mr. Wilson @APChem]

Erin--I will look up problems #1.24, 1.25, and 1.26 and get back to you.

[Mr. Wilson @APChem]

Erin--if things expand when they get warmer, their volume increases, right? And their mass stays the same? So, as V goes up, D goes down.

[Mr. Wilson @APChem]

CTD students--next Friday's test will cover elements #1-72. Look out--this is a tough bunch to learn.

[Mr. Wilson @APChem]

Erin--density changes with temperature. Think about the difference in the densities of hot air and cold air.

[Mr. Wilson @APChem]

This may be a bit confusing for a while, because I am using this website for both my AP Chem students and my summer program students.

[Mr. Wilson @APChem]

how far on the periodic table do we need to memorize for next Friday? 1-72?

[Mr. Wilson @APChem]

When the density is given, it always says "at 20 celcius" or something after it. Why are temperatures given - how do we use them? - Erin