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Chem and Physics labs

Posted: Mon Sep 01, 2008 9:10 pm
by gneissisnice
Im just wondering, do these events have specific topics again this year? Because they're not on the event list like last year. Last year, the topics were listed under the event name.

Re: Chem and Physics labs

Posted: Mon Sep 01, 2008 9:23 pm
by dickyjones
Physics Lab - energy/alternative energy (really the same as last year)

Chem Lab - 50% Acids/Bases and 50% 'Titration Race' (performing a titration as accurately and quickly as possible)

Re: Chem and Physics labs

Posted: Mon Sep 01, 2008 11:49 pm
by gneissisnice
Gotcha. Thanks.

Re: Chem and Physics labs

Posted: Tue Sep 02, 2008 2:16 am
by adam124218
"Titration Race"? That sound ridiculous. I guess performing a titration is an important thing to be able to do, but it doesn't really seem worth half the test.

Re: Chem and Physics labs

Posted: Tue Sep 02, 2008 2:33 am
by dickyjones
Yeah, I agree that it seems a little over-weighted. Maybe 25% would've been better, but what can you do?

The scoring problem is what confuses me. It says teams will be ranked by accuracy and precision of calculated concentration and standard deviation. And ties will broken by time. So I'm not sure whether that means the team that does it best gets full credit on that section and the team that does worse gets no credit at all or what..

Re: Chem and Physics labs

Posted: Tue Sep 02, 2008 4:48 pm
by gneissisnice
And how do they know time? Do they want the kids to put the time they finish it on their paper? because that seems a little risky.

Re: Chem and Physics labs

Posted: Fri Sep 05, 2008 9:30 pm
by Aia
Where would you suggest starting on Chem Lab? I've never done Chem before, but I am taking Chemistry at school. Is it easier to learn by studying or actually completing experiments?

Re: Chem and Physics labs

Posted: Sat Sep 06, 2008 2:18 am
by adam124218
Studying, definitely. Chem lab is the least "lab" of any of the chemistry events (though I don't know about environ.chem this year). Basically, you just have to understand the concepts behind the labs to be able to do them. Studying and being able to do the chemistry math problems is more important.

Re: Chem and Physics labs

Posted: Sat Sep 06, 2008 3:55 am
by dudeincolorado
Aia wrote:Where would you suggest starting on Chem Lab? I've never done Chem before, but I am taking Chemistry at school. Is it easier to learn by studying or actually completing experiments?
umm form i B div experience chem events always seem to be better if you actually do it, but studying is also needed i mean half of food science was a writen test so yeah

Re: Chem and Physics labs

Posted: Sat Sep 06, 2008 12:09 pm
by dickyjones
I'd say that the best way to practice chem lab would be to learn the science behind it before you start team practices (or just out of team practices) so that you can use your time at school when you have access to lab equipment to practice titrations and other acid/base labs. I think that's pretty much what our team did last year, and they ended up doing pretty well.

Re: Chem and Physics labs

Posted: Sat Sep 06, 2008 9:12 pm
by adam124218
dickyjones wrote:I'd say that the best way to practice chem lab would be to learn the science behind it before you start team practices (or just out of team practices) so that you can use your time at school when you have access to lab equipment to practice titrations and other acid/base labs. I think that's pretty much what our team did last year, and they ended up doing pretty well.

"They ended up doing pretty well"? I'd say your team ended up doing a little better than "pretty well"! :lol: They only won nationals, did they not?

Re: Chem and Physics labs

Posted: Tue Sep 09, 2008 10:31 pm
by tweedlebeetle
Studying for us meant madly completing every AP practice question we could find relative to the topic. But don't put off actually doing the labs- you want to make sure to ask your teacher what sort of materials might be given to you- last year for a common filtering lab at NY states, we were expected to use a vacuum system hooked up to the sink to drain water faster- our school doesn't have the money for those, so we had never seen them before and we had no idea what knobs to turn. Luckily one of the proctors sympathized.

Re: Chem and Physics labs

Posted: Sun Sep 21, 2008 10:19 pm
by Protestant
I think since they took out Circuit lab, they should've done electrical engineering or something circuit-related for Physics lab

Re: Chem and Physics labs

Posted: Tue Nov 18, 2008 12:54 am
by binary010101
For the titration race, would the accuracy of the results matter more, or the speed of the titration. If speed is weighted more, I could just open the tap on the burette and close it for a (very rough) approximation.

Re: Chem and Physics labs

Posted: Thu Nov 20, 2008 3:15 am
by Sheogorath
I think the speed is only used as a tiebreaker.