Help- AP Chem. Lab portion of exam





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Discus: SAT/ACT Tests and Test Preparation: May 2003 Archive: Help- AP Chem. Lab portion of exam
By Me1 (Me1) on Saturday, May 10, 2003 - 09:25 am: Edit

We haven't done a lab in months. Out of 20 or so chapters in our book, we stoped doing labs around ch. 3 or 4. How can I prepare for the lab ?s on the exam?

By Jason817 (Jason817) on Saturday, May 10, 2003 - 11:10 am: Edit

We have only done 3-4 labs as well. There is no way to actually prepare without doing the labs. My teacher says is most likely on the spectrometer lab because they haven't asked that yet.

By Me1 (Me1) on Saturday, May 10, 2003 - 11:56 am: Edit

Thanx lots 4 the info. We have never learned about such a thing, so I will be sure to research it.

By Futuredoctor (Futuredoctor) on Saturday, May 10, 2003 - 12:21 pm: Edit

What's a spectrometer? How do I prepare for the lab questions (are there any good books)? We haven't done a lab since December

By Futuredoctor (Futuredoctor) on Saturday, May 10, 2003 - 12:24 pm: Edit

BUMPPPPPPPPPPPPPPPPPPPPPPPPPP!!!!!!!!

By Adamg (Adamg) on Saturday, May 10, 2003 - 01:20 pm: Edit

The AP Cliffs Chemistry book has a summary of a ton of labs.

By Heatwave345 (Heatwave345) on Saturday, May 10, 2003 - 03:11 pm: Edit

a spectrometer shoots a beam of light through a sample and that allow the measurement of concentration of the sample.

By Humburdy (Humburdy) on Monday, May 12, 2003 - 12:08 am: Edit

and it follows beer's law which is absorbance = elc (actually, i made up these letters but every textbook has diff ones anyways)

e: is some kind of constant related to specific wavelength
l: is length of cell path which the light is shone through
c: is the concentration of the sample in mol/L

By Humburdy (Humburdy) on Monday, May 12, 2003 - 12:14 am: Edit

oh and isn't it a spectrophotometer?

By Jason817 (Jason817) on Monday, May 12, 2003 - 12:42 am: Edit

yeah thats what I meant.

By Muawan (Muawan) on Monday, May 12, 2003 - 07:37 pm: Edit

Don't count on spectrophotometer. Its just a prediction. For all you know it could be a titration or some other thing.

By Sixtoes (Sixtoes) on Monday, May 12, 2003 - 07:57 pm: Edit

it won't be spectrophotometer because theres very very little calculation associated with it.


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