Can't Judge a Powder B

Locked
Jim_R
Admin Emeritus
Admin Emeritus
Posts: 283
Joined: May 13th, 2001, 4:22 pm
Division: Grad
Location: Pittsburgh, Pa
Has thanked: 0
Been thanked: 0
Contact:

Can't Judge a Powder B

Post by Jim_R » June 11th, 2009, 7:26 pm

Discussion for Can't Judge a Powder B.
-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.

User avatar
2win
Member
Member
Posts: 553
Joined: March 3rd, 2009, 6:07 pm
Division: C
State: TX
Location: h-town
Has thanked: 0
Been thanked: 0
Contact:

Re: Can't Judge a Powder B

Post by 2win » August 3rd, 2009, 6:35 am

so for this event, you have to be able to name powders? is that all?
k-tx. retiring from scioly.

User avatar
gneissisnice
Exalted Member
Exalted Member
Posts: 927
Joined: March 11th, 2008, 9:10 am
Division: Grad
State: NY
Location: Long Island
Has thanked: 0
Been thanked: 0

Re: Can't Judge a Powder B

Post by gneissisnice » August 3rd, 2009, 7:25 am

Not even that, no time in the event do you have to ID the powder.
You have to write down observations, such as physical properties of the powder (color, relative grain size, solid), and it's reactions with other chemicals (does it effervesce in HCl? or react with NaOH?).
You have to write down everything you can think of, even if it's really obvious. Then you clean up and take a test, answering questions about the powder. You get 5 points for a correct answer with an observation, and 2 points for a correct answer without an observation. You have to number each observation, and then put the number down by the question that requires it.

That's basically the event. They generally give you boring, non-reactive powders too. And no observation is too trivial for them. At nationals one year, they gave us the powder in a bag which was numbered, they asked us what number was on the bag =/
2009 events:
Fossils: 1st @ reg. 3rd @ states (stupid dinosaurs...) 5th @ nats.
Dynamic: 1st @ reg. 19thish @ states, 18th @ nats
Herpetology (NOT the study of herpes): NA
Enviro Chem: 39th @ states =(
Cell Bio: 9th @ reg. 18th @ nats
Remote: 6th @ states 3rd @ Nats
Ecology: 5th @ Nats

User avatar
2win
Member
Member
Posts: 553
Joined: March 3rd, 2009, 6:07 pm
Division: C
State: TX
Location: h-town
Has thanked: 0
Been thanked: 0
Contact:

Re: Can't Judge a Powder B

Post by 2win » August 3rd, 2009, 10:09 am

oh, okay. thanks!
k-tx. retiring from scioly.

IZhou186
Member
Member
Posts: 5
Joined: September 4th, 2009, 9:56 pm
Division: B
State: CA
Has thanked: 0
Been thanked: 0

Re: Can't Judge a Powder B

Post by IZhou186 » September 13th, 2009, 10:36 pm

so is this a really easy and boring event that doesn't require much preparation?

robotman
Admin Emeritus
Admin Emeritus
Posts: 1447
Joined: June 29th, 2008, 7:37 pm
Division: Grad
State: TX
Location: 127.0.0.1
Has thanked: 0
Been thanked: 2 times
Contact:

Re: Can't Judge a Powder B

Post by robotman » September 14th, 2009, 4:04 am

no this is a fun event i have had the chance to do it at a Camp

and there is no science Olympiad event that is easy with the exception of pentathlon all the events you are in you need to study and work on if you wish to medal in them
Edit the Wiki.
Upload to the Image Gallery
[medals]Get Medals[/medals]
[chat][/chat]

User avatar
gneissisnice
Exalted Member
Exalted Member
Posts: 927
Joined: March 11th, 2008, 9:10 am
Division: Grad
State: NY
Location: Long Island
Has thanked: 0
Been thanked: 0

Re: Can't Judge a Powder B

Post by gneissisnice » September 15th, 2009, 6:18 pm

IZhou186 wrote:so is this a really easy and boring event that doesn't require much preparation?
Though the premise is simple, competitions can get really hard sometimes.
You need to be able to communicate well, having one person write down the observations while the other does the tests.

At nationals one year, they gave us the basic reagents (HCl, NaOH, and water), and then they gave us phenolphthalein, bromothymyl blue, and some other chemical, and we had to due all the tests within 30 minutes.
My partner and I tried to work fast, but we were halfway through phenolphthalein when the time ended, with 2 more reagents to go. Of course, nearly every question on the test was about the reaction with phenolphthalein, bromothymyl blue, and the other one.
Needless to say, we got 51st =(.
It made me sad.

You're gonna want to practice and be able to execute the tests quickly and decisively.
2009 events:
Fossils: 1st @ reg. 3rd @ states (stupid dinosaurs...) 5th @ nats.
Dynamic: 1st @ reg. 19thish @ states, 18th @ nats
Herpetology (NOT the study of herpes): NA
Enviro Chem: 39th @ states =(
Cell Bio: 9th @ reg. 18th @ nats
Remote: 6th @ states 3rd @ Nats
Ecology: 5th @ Nats

Science Guava
Member
Member
Posts: 2
Joined: September 28th, 2009, 1:33 pm
Division: B
State: IL
Location: Who knows?
Has thanked: 0
Been thanked: 0

Re: Can't Judge a Powder B

Post by Science Guava » September 28th, 2009, 1:39 pm

I was just researching this event and it seems like you should know more about how to make the right observations rather than trying to identify the powder usong these observations. :D Although, I'm kind of nervous about what sorts of powders that are generally used. Has anyone who's done it before got some ideas? (pardon the grammar) :idea:
A balanced diet is a cookie in both hands.

This has been a message from...Guava.

robotman
Admin Emeritus
Admin Emeritus
Posts: 1447
Joined: June 29th, 2008, 7:37 pm
Division: Grad
State: TX
Location: 127.0.0.1
Has thanked: 0
Been thanked: 2 times
Contact:

Re: Can't Judge a Powder B

Post by robotman » September 28th, 2009, 2:03 pm

you do not have to identify the powders there is a list of powders in the rules which are recomendations on what may be used
the only time i have doe it before was at SO camp and it really is just making as many accurate observations of the substance

i suggest learning the different ways to classify grains (size texture etc)
Edit the Wiki.
Upload to the Image Gallery
[medals]Get Medals[/medals]
[chat][/chat]

Amber259
Member
Member
Posts: 2
Joined: October 2nd, 2009, 5:32 pm
Division: B
State: NC
Has thanked: 0
Been thanked: 0

Re: Can't Judge a Powder B

Post by Amber259 » October 5th, 2009, 5:24 am

isn't like food science

Locked

Return to “2010 Lab Events”

Who is online

Users browsing this forum: No registered users and 2 guests