Help preparing for finals

Any of you avoiding studying for your finals with a little web surfing, now you can do both! Useful mnemonic images at the links.

Chemistry - how to tell which anion it is. And remember, if you're not part of the solution, you're part of the precipitate.

Anatomy - where to amputate.

History of science - remember who's who and where they made a difference.

Cooking - telling different cut sizes apart (dicing, mincing, etc.).

Got me, but it's gotta be useful for something: how much does a gallon of this stuff cost? From Clorox ($2.56) to nail polish ($1,024).