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by yellow_squirtle
April 23rd, 2017, 7:28 pm
Forum: 2017 Nationals
Topic: Who's Going to Nationals 2017?
Replies: 66
Views: 10017

Re: Who's Going to Nationals 2017?

Div C
William P. Clements HS
Disease Detectives, Forensics, Optics
by yellow_squirtle
February 19th, 2017, 1:01 pm
Forum: 2017 Question Marathons
Topic: Forensics C
Replies: 37
Views: 4594

Re: Forensics C

Let's revive this forum, shall we !!! An unknown sample turns green when dissolved in water with Benedict's reagent and heated. What does this mean? Also, why does sucrose not provide a positive test result when it contains two sugars, one of them being glucose? (What is the other sugar that makes ...
by yellow_squirtle
February 19th, 2017, 11:59 am
Forum: 2017 Question Marathons
Topic: Forensics C
Replies: 37
Views: 4594

Re: Forensics C

Let's revive this forum, shall we !!! An unknown sample turns green when dissolved in water with Benedict's reagent and heated. What does this mean? Also, why does sucrose not provide a positive test result when it contains two sugars, one of them being glucose? (What is the other sugar that makes u...
by yellow_squirtle
January 2nd, 2017, 11:04 pm
Forum: 2017 Question Marathons
Topic: Forensics C
Replies: 37
Views: 4594

Re: Forensics C

Why is acetone a good solvent to use for paper chromatography on permanent markers? .|Acetone is nonpolar. Permanent markers use nonpolar ink (so water won't wash it away). Like dissolves like, so the acetone can actually move the permanent marker ink up the paper. Correct|I believe acetone is pola...
by yellow_squirtle
December 30th, 2016, 12:51 am
Forum: 2017 Question Marathons
Topic: Forensics C
Replies: 37
Views: 4594

Re: Forensics C

Why is acetone a good solvent to use for paper chromatography on permanent markers?
by yellow_squirtle
December 25th, 2016, 9:11 pm
Forum: 2017 Question Marathons
Topic: Forensics C
Replies: 37
Views: 4594

Re: Forensics C

What are the burn test results for polystyrene?
yellow flame, burns quickly, plastic drips, gas odor, black smoke with soot
by yellow_squirtle
October 27th, 2016, 5:26 pm
Forum: 2017 Question Marathons
Topic: Disease Detectives B/C
Replies: 62
Views: 6835

Re: Disease Detectives B/C

1. actions taken to prevent a disease from occurring
2. inhaling spores in the air (aerosol transmission)
3. map showing case locations
by yellow_squirtle
November 8th, 2015, 12:21 pm
Forum: 2016 Invitationals, Regionals, and States
Topic: Texas 2016
Replies: 89
Views: 17131

Re: Texas 2016

1st - Clements
2nd - Seven Lakes
3rd - Boca Raton
by yellow_squirtle
August 22nd, 2015, 10:44 pm
Forum: 2015 Invitationals, Regionals, and States
Topic: Texas 2015
Replies: 137
Views: 27119

Re: Texas 2015

Is CyFalls open to Division B this year? Also, has anyone here succeeded in accessing the school's scioly website? I also couldn't get into the website (I was looking for invite results). It might be temporarily down for summer. (finally) found it! the link was posted on the state website. https://...
by yellow_squirtle
August 6th, 2015, 5:36 pm
Forum: 2015 Question Marathons
Topic: Forensics C
Replies: 38
Views: 6014

Re: Forensics C

Light travels from air into a glass fragment with an angle of incidence of 42 degrees. The angle of refraction at the end of the fragment is 18 degrees. Calculate the index of refraction of the glass. Round to the nearest hundredth. Think I've got this|asinθ1=bsinθ2 b=asinθ1/sinθ2 =asin42°/sin18° a...

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