Can't Judge A Powder B

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

Can't Judge A Powder B

Postby Jim_R » August 4th, 2013, 2:57 pm

-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.

silverheart7
Member
Member
Posts: 394
Joined: October 8th, 2011, 7:50 pm
Division: Grad
State: NY
Location: Eastern Long Island

Re: Can't Judge A Powder B

Postby silverheart7 » September 12th, 2013, 6:16 pm

I looked at the wiki today. Is the list of observations given there the best way to format your personal observations during competition? Or is there a more concise way?
Past: Forestry, Disease, Meteorology, Towers, Sounds, Triple E, Boomilever, Entomology, WQ, WIDI, Bridges

Total Medals: 14
State Medals: Sounds of Music (2nd, 2013), Forestry (3rd, 2013), and Triple E (4th, 2013)

Gelinas and Ward Melville Alum, ELI Volunteer

robotman
Administrator
Administrator
Posts: 1447
Joined: June 29th, 2008, 7:37 pm
Division: Grad
State: TX
Location: 127.0.0.1
Contact:

Re: Can't Judge A Powder B

Postby robotman » September 15th, 2013, 7:50 pm

The general goal of the event is to make as many detailed observations as possible during the time you have to observe.
The best method to do so is a lot of practice, and to create a method that you follow each time you test a powder, and to never vary that pattern once you get it down. The list on the wiki is a good place to start, it has what you need for most tests. My suggestion is to just practice as much as possible, and determine a method that works best for you. Just remember that concise is not always best for CJAP, make sure you get all the information down in a way that you can use it to prove your responses to the questions.

jma
Member
Member
Posts: 91
Joined: October 10th, 2011, 4:08 pm
Division: B
State: -

Re: Can't Judge A Powder B

Postby jma » September 28th, 2013, 6:32 am

Where can I buy NaOh & HCL? Thanks

chalker
Member
Member
Posts: 2086
Joined: January 9th, 2009, 7:30 pm
Division: Grad
State: OH

Re: Can't Judge A Powder B

Postby chalker » September 28th, 2013, 7:08 am

jma wrote:Where can I buy NaOh & HCL? Thanks


You can always go to one of the big online science suppliers, such as Fisher Scientific (http://www.fishersci.com). However most common chemicals are available in local stores, just sold under different names. Check out: http://www.csun.edu/science/ref/equipme ... common.htm

Student Alumni
National Event Supervisor
National Physical Sciences Rules Committee Chair

jma
Member
Member
Posts: 91
Joined: October 10th, 2011, 4:08 pm
Division: B
State: -

Re: Can't Judge A Powder B

Postby jma » September 28th, 2013, 10:34 am

chalker wrote:
jma wrote:Where can I buy NaOh & HCL? Thanks


You can always go to one of the big online science suppliers, such as Fisher Scientific (http://www.fishersci.com). However most common chemicals are available in local stores, just sold under different names. Check out: http://www.csun.edu/science/ref/equipme ... common.htm


Thanks again!

siri
Member
Member
Posts: 1
Joined: October 14th, 2013, 5:24 pm
Division: B
State: TX

Chemicals

Postby siri » October 14th, 2013, 5:28 pm

Where can we buy chemicals(salts/powders) for testing? What salts are usually used? Any help is appreciated.

Thanks.

User avatar
hpfananu
Member
Member
Posts: 142
Joined: July 11th, 2010, 5:22 pm
Division: C
State: TX
Location: TAMS

Re: Chemicals

Postby hpfananu » October 16th, 2013, 2:05 pm

siri wrote:Where can we buy chemicals(salts/powders) for testing? What salts are usually used? Any help is appreciated.

Thanks.

They can give you any powder really. Sometimes, they could give NaCl but usually they just give some copper containing compound because the color isn't white. You can practice with anything really; sugar, baking powder, cornstarch, or any other powder that you can find in your house. Also, for practicing with chemicals, you can use any liquid-like substance in your house. We used soap or Pine-Sol on more than one occasion and it makes for great practice.
Materials Science|Water Quality|Disease Detectives
Sleep is for the Weak: SLHS SO 2012-2013
TAMS 2013-2014

silverheart7
Member
Member
Posts: 394
Joined: October 8th, 2011, 7:50 pm
Division: Grad
State: NY
Location: Eastern Long Island

Re: Chemicals

Postby silverheart7 » October 17th, 2013, 12:36 pm

siri wrote:Where can we buy chemicals(salts/powders) for testing? What salts are usually used? Any help is appreciated.

Thanks.
There is a store afiliated with Science Olympiad that sells powders for Crime and Can't Judge. Check soinc for the link?
Past: Forestry, Disease, Meteorology, Towers, Sounds, Triple E, Boomilever, Entomology, WQ, WIDI, Bridges

Total Medals: 14
State Medals: Sounds of Music (2nd, 2013), Forestry (3rd, 2013), and Triple E (4th, 2013)

Gelinas and Ward Melville Alum, ELI Volunteer

Katkatkat
Member
Member
Posts: 1
Joined: November 13th, 2013, 10:31 am
Division: B
State: WA

Re: Can't Judge A Powder B

Postby Katkatkat » November 13th, 2013, 10:36 am

Can someone please tell me the strength of the sodiumhydroxide solution? I found a local store, but I need to know the percentage.

User avatar
ToniJackson
Member
Member
Posts: 4
Joined: October 23rd, 2013, 11:45 am
Division: B
State: NY
Location: Sinnoh Region

Re: Can't Judge A Powder B

Postby ToniJackson » November 13th, 2013, 1:04 pm

Is there a list of characteristics and how to test for them available?
All I hear are these voices in my head
Talking to me as I lie awake in bed
They know this happiness is all for pretend
They know my demons are truly my friends
If they also speak to you, we can join together
With their help and their guidance, we shall live forever

User avatar
cupcakegirl
Member
Member
Posts: 135
Joined: June 8th, 2012, 11:16 am
Division: C
State: TX
Location: Studying:)

Re: Can't Judge A Powder B

Postby cupcakegirl » November 13th, 2013, 4:38 pm

ToniJackson wrote:Is there a list of characteristics and how to test for them available?

There's a pretty good list to start with on the Can't Judge A Powder Wiki, but beyond that, just try to think of EVERY SINGLE POSSIBLE observation you can make with every reaction.
2013 Nationals Results: Water Quality-2nd, Food Science-6th, Crime Busters-13th, Team- 7th
2014 National Results: Water Quality- 7th, Can't Judge A Powder- 6th, Crime Busters- 4th, Heredity- 5th, Team- FIRST!!!
2015 Events: Forensics, Green Generation, Fossils

aljones
Member
Member
Posts: 4
Joined: October 22nd, 2013, 3:40 pm
Division: B
State: AL

Re: Can't Judge A Powder B

Postby aljones » November 14th, 2013, 7:09 pm

What is the cleavage of a powder and how do your test for it, what would you write for observations? Thanks

hmssciencenerd
Member
Member
Posts: 5
Joined: November 15th, 2013, 11:23 am
Division: B
State: AL

Re: Can't Judge A Powder B

Postby hmssciencenerd » December 17th, 2013, 12:31 pm

Should i memorize the periodic table :geek:

User avatar
knittingfrenzy18
Exalted Member
Exalted Member
Posts: 142
Joined: April 3rd, 2012, 11:25 am
Division: B
State: MD
Location: Somewhere in the world.
Contact:

Re: Can't Judge A Powder B

Postby knittingfrenzy18 » December 19th, 2013, 7:16 am

I don't think you'll need to for this event; it's very likely you won't need to know all the elements.
Pilgrimage Homeschool Division B, Maryland
Visited 2012 and 2014 National Tournaments, 5th place Sounds of Music 2014
http://knittingfrenzy18.wordpress.com


Return to “2014 Lab Events”

Who is online

Users browsing this forum: No registered users and 1 guest