Page 2 of 3
Re: Chem Lab C
Posted: December 2nd, 2014, 8:07 am
by bernard
SWAnG wrote:
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.
Re: Chem Lab C
Posted: December 3rd, 2014, 6:07 pm
by SWAnG
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.
Re: Chem Lab C
Posted: December 4th, 2014, 4:22 am
by Unome
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?
Re: Chem Lab C
Posted: December 4th, 2014, 4:58 am
by chalker
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.
Re: Chem Lab C
Posted: December 22nd, 2014, 4:09 pm
by Catie314
Does anyone know of common labs that are likely to be used for this event this year?
Re: Chem Lab C
Posted: December 23rd, 2014, 10:37 am
by samlan16
Catie314 wrote:Does anyone know of common labs that are likely to be used for this event this year?
We are expecting basic rxns for stoichiometry followed by determining the rate laws for the kinetics part (which would mean varying the quantities of the reactants).
Re: Chem Lab C
Posted: December 27th, 2014, 7:52 pm
by Catie314
samlan16 wrote:Catie314 wrote:Does anyone know of common labs that are likely to be used for this event this year?
We are expecting basic rxns for stoichiometry followed by determining the rate laws for the kinetics part (which would mean varying the quantities of the reactants).
Thank you. That was quite helpful.
Re: Chem Lab C
Posted: February 24th, 2015, 6:17 pm
by boomvroomshroom
chalker wrote: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.
When in doubt, just use three lol
But if you really want to, no harm in being that annoying kid that asks all these clarification questions. Better safe than sorry, right?
Re: Chem Lab C
Posted: March 8th, 2015, 8:11 am
by Gemma W
Just wondering, what kinds of things are people putting in their binders? Because as far as I can tell the event is mostly calculation, aside from some of the qualitative analysis stuff and reaction prediction....
Re: Chem Lab C
Posted: March 10th, 2015, 2:23 pm
by boomvroomshroom
Gemma W wrote:Just wondering, what kinds of things are people putting in their binders? Because as far as I can tell the event is mostly calculation, aside from some of the qualitative analysis stuff and reaction prediction....
random trivia? and notes and charts too, I guess. We don't even use 90% of it half the time but oh well
