Chem Lab C

Jim_R
Admin Emeritus
Admin Emeritus
Posts: 283
Joined: May 13th, 2001, 4:22 pm
Division: Grad
Location: Pittsburgh, Pa
Contact:

Chem Lab C

Postby Jim_R » August 10th, 2014, 10:46 am

-The path of the Administrator is beset on all sides by the inequities of the selfish and the tyranny of evil men.

-Nothing\'s gonna get deleted. We\'re gonna be like three little Fonzies here. And what\'s Fonzie like? Come on, what\'s Fonzie like?
-Cool?
-Correctamundo. And that\'s what we\'re gonna be. We\'re gonna be cool. Now, I\'m gonna count to three, and when I count three, you let go of your mouse, and back away from the keyboard. But when you do it, you do it cool. Ready? One... two... three.

09821qh
Member
Member
Posts: 14
Joined: August 12th, 2013, 10:05 am
Division: C
State: -
Contact:

Re: Chem Lab C

Postby 09821qh » September 14th, 2014, 6:27 pm

Who's excited for this event!? Do any of you know what to expect for kinetics :roll:

User avatar
computergeek3
Member
Member
Posts: 163
Joined: November 10th, 2009, 12:49 pm
Division: Grad
State: PA
Location: University of Pittsburgh
Contact:

Re: Chem Lab C

Postby computergeek3 » September 16th, 2014, 9:12 pm

09821qh wrote:Who's excited for this event!? Do any of you know what to expect for kinetics :roll:


What I would expect for kinetics is determining reaction order (0 order, 1st order, 2nd order) and determining rates of reactions. Additionally, I would expect to find questions about figuring out the rate-determining step of a system of reactions and how that affects the rate of the overall reaction. Any AP/IB textbook should have further explanations of all of that stuff!
If you can't explain it simply, you don't know it well enough. -Albert Einstein

Bayard Rustin Science Olympiad 2010-2014
Pittsburgh Allderdice Assistant Coach

09821qh
Member
Member
Posts: 14
Joined: August 12th, 2013, 10:05 am
Division: C
State: -
Contact:

Re: Chem Lab C

Postby 09821qh » September 18th, 2014, 3:57 pm

Thank you! Also, according to the rules, I think determining rate laws will only be for state and national level but just to be safe, I'll be sure to practice them anyway :D

Crazy Puny Man
Member
Member
Posts: 265
Joined: May 25th, 2013, 6:25 pm
Division: Grad
State: IN
Contact:

Re: Chem Lab C

Postby Crazy Puny Man » September 18th, 2014, 8:38 pm

09821qh wrote:Thank you! Also, according to the rules, I think determining rate laws will only be for state and national level but just to be safe, I'll be sure to practice them anyway :D


I don't even think determining rate laws is the hardest part of kinetics, so that part puzzles me...

mej710
Member
Member
Posts: 24
Joined: September 15th, 2013, 2:48 pm
Division: C
State: NY
Location: Ithaca, NY
Contact:

Re: Chem Lab C

Postby mej710 » September 21st, 2014, 8:47 am

What are the topics for this year?

User avatar
XJcwolfyX
Member
Member
Posts: 340
Joined: October 22nd, 2010, 7:57 am
Division: C
State: -
Contact:

Re: Chem Lab C

Postby XJcwolfyX » September 22nd, 2014, 6:31 am

stoich and kinetics
Medal Counter: 73

User avatar
SWAnG
Member
Member
Posts: 80
Joined: January 18th, 2014, 11:22 pm
Division: C
State: MN
Contact:

Re: Chem Lab C

Postby SWAnG » November 30th, 2014, 11:17 am

For exponents and logarithims there is a special rule for sig figs. Are we expected to utilize this or not?

chalker
Member
Member
Posts: 2066
Joined: January 9th, 2009, 7:30 pm
Division: Grad
State: OH
Contact:

Re: Chem Lab C

Postby chalker » November 30th, 2014, 4:07 pm

SWAnG wrote:For exponents and logarithims there is a special rule for sig figs. Are we expected to utilize this or not?



SO has an official SigFig policy on the website at: http://soinc.org/sites/default/files/up ... 2-5-12.pdf

Student Alumni
National Event Supervisor
National Physical Sciences Rules Committee Chair

User avatar
SWAnG
Member
Member
Posts: 80
Joined: January 18th, 2014, 11:22 pm
Division: C
State: MN
Contact:

Re: Chem Lab C

Postby SWAnG » November 30th, 2014, 4:43 pm

chalker wrote:
SWAnG wrote:For exponents and logarithims there is a special rule for sig figs. Are we expected to utilize this or not?



SO has an official SigFig policy on the website at: http://soinc.org/sites/default/files/up ... 2-5-12.pdf


Thanks! I'm assuming we use the multiplication/division rules for exponents and logarithms then?

User avatar
bernard
Administrator
Administrator
Posts: 1882
Joined: January 5th, 2014, 3:12 pm
Division: Grad
State: WA
Location: Seattle, WA
Contact:

Re: Chem Lab C

Postby bernard » December 2nd, 2014, 8:07 am

SWAnG wrote:
chalker wrote:
SWAnG wrote:For exponents and logarithims there is a special rule for sig figs. Are we expected to utilize this or not?

SO has an official SigFig policy on the website at: http://soinc.org/sites/default/files/up ... 2-5-12.pdf

Thanks! I'm assuming we use the multiplication/division rules for exponents and logarithms then?

Take a look at this link. It does a good job of explaining why the significant figure rules are the way they are. However, I cannot say that these rules are "official" since they are not on the Official Science Olympiad website.

Significant Figure Rules for Logarithms: When you take the log of a number with N significant figures, the result should have N decimal places. The number in front of the decimal place indicates only the order of magnitude. It is not a significant figure.

Significant Figure Rules for Exponents: When raising 10 to a power: If the power of 10 has N decimal places, the result should have N significant figures. The rule for raising e to a power is similar.
"One of the ways that I believe people express their appreciation to the rest of humanity is to make something wonderful and put it out there."

User avatar
SWAnG
Member
Member
Posts: 80
Joined: January 18th, 2014, 11:22 pm
Division: C
State: MN
Contact:

Re: Chem Lab C

Postby SWAnG » December 3rd, 2014, 6:07 pm

I agree those are the correct ways to do them. However scioly has no policy on it other than the multiplication one... And a lot of supervisors don't know the rules.

User avatar
Unome
Moderator
Moderator
Posts: 3617
Joined: January 26th, 2014, 12:48 pm
Division: Grad
State: GA
Location: somewhere in the sciolyverse
Contact:

Re: Chem Lab C

Postby Unome » December 4th, 2014, 4:22 am

SWAnG wrote:I agree those are the correct ways to do them. However scioly has no policy on it other than the multiplication one... And a lot of supervisors don't know the rules.

So even in Division C I'm going to have to ask all the supervisors about sigfigs?
Userpage
Chattahoochee High School Class of 2018
Georgia Tech Class of 2022

Opinions expressed on this site are not official; the only place for official rules changes and FAQs is soinc.org.

chalker
Member
Member
Posts: 2066
Joined: January 9th, 2009, 7:30 pm
Division: Grad
State: OH
Contact:

Re: Chem Lab C

Postby chalker » December 4th, 2014, 4:58 am

Unome wrote:
SWAnG wrote:I agree those are the correct ways to do them. However scioly has no policy on it other than the multiplication one... And a lot of supervisors don't know the rules.

So even in Division C I'm going to have to ask all the supervisors about sigfigs?



If you follow the rules above, I can't imagine a situation where you'd be penalized. So I'm not sure that you'd need to explicitly ask about it everytime, although you always are allowed to.

Student Alumni
National Event Supervisor
National Physical Sciences Rules Committee Chair

Catie314
Member
Member
Posts: 3
Joined: October 27th, 2014, 4:41 pm
Division: C
State: CO
Contact:

Re: Chem Lab C

Postby Catie314 » December 22nd, 2014, 4:09 pm

Does anyone know of common labs that are likely to be used for this event this year?
We're all good stories in the end. Just make it a good one, eh?" ~ 11th Doctor


Return to “2015 Lab Events”

Who is online

Users browsing this forum: No registered users and 1 guest