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by c21k
May 6th, 2019, 7:18 am
Forum: Lab Events
Topic: Forensics C
Replies: 107
Views: 10419

Re: Forensics C

I'm not going to nats but I was just curious, how do you guys practice for forensics over the summer? If you are willing to spend the money you can buy a lot of the materials online through Science Olympiad or other companies. You can surprisingly even get cheap equipment and make it work (I have a...
by c21k
March 31st, 2019, 4:01 pm
Forum: Study Events
Topic: Fossils B/C
Replies: 307
Views: 25166

Re: Fossils B/C

Does anyone have advice on how to differentiate between cross sections of Nummulites vs Fusulinids
by c21k
February 23rd, 2019, 6:20 am
Forum: Mousetrap Vehicle C
Topic: String Problems
Replies: 6
Views: 715

Re: String Problems

I have used fishing line before for the drive string, especially because it is so thin and can permit more loops around the axle than other times of string, however, I found that after a few runs, it began to curl up/retain the curled up shape (instead of remaining straight). That made it a nuisanc...
by c21k
February 20th, 2019, 8:23 pm
Forum: General Chat
Topic: Favorite Event?
Replies: 320
Views: 16060

Re: Favorite Event?

Forensics

and if this is socially acceptable, Mission...its a love-hate relationship
by c21k
February 20th, 2019, 7:17 pm
Forum: Lab Events
Topic: Forensics C
Replies: 107
Views: 10419

Re: Forensics C

I usually only use the appearance as a last resort to narrowing down. Lets say there are 2 with a yellow flame test, and they have the same solubility, etc. then I would go to the appearance... I think they were referring to tests where there are no flame tests... Some of the powders I have worked ...
by c21k
February 7th, 2019, 5:11 pm
Forum: Lab Events
Topic: Forensics C
Replies: 107
Views: 10419

Re: Forensics C

The Solon Invitational forensics was absolutely insane. My partner's first time doing it, so I had her literally just read and make lists of the suspects/what would implicate them. That alone took her 10 minutes (but she did find a bonus at the end of the instructions). We were lost at what to do w...
by c21k
February 5th, 2019, 2:20 pm
Forum: Mousetrap Vehicle C
Topic: String Problems
Replies: 6
Views: 715

Re: String Problems

We've been using etiher monofilament or fluorocarbon fishing line (don't recall) which you can probably obtain relatively easily (Walmart, pigeon's Sporting Goods, Target, Amazon, etc.) I think the most annoying part about using it is the fact that it's slippery and won't hold knots. We just used bl...
by c21k
February 3rd, 2019, 8:05 pm
Forum: Lab Events
Topic: Forensics C
Replies: 107
Views: 10419

Re: Forensics C

Does anyone have some advice on how to identify a given plastic sample? (no burn tests permitted, no solutions of different densities or indices provided) Guessing you went to the Solon Invitational? The Solon Invitational forensics was absolutely insane. My partner's first time doing it, so I had ...
by c21k
February 3rd, 2019, 7:30 pm
Forum: Lab Events
Topic: Forensics C
Replies: 107
Views: 10419

Re: Forensics C

Does anyone have some advice on how to identify a given plastic sample? (no burn tests permitted, no solutions of different densities or indices provided) Guessing you went to the Solon Invitational? Haha, yep! I was so lost on the plastics... :cry: I have notes on how transparent the plastics are ...
by c21k
February 3rd, 2019, 11:03 am
Forum: Lab Events
Topic: Forensics C
Replies: 107
Views: 10419

Re: Forensics C

Does anyone have some advice on how to identify a given plastic sample?

(no burn tests permitted, no solutions of different densities or indices provided)
by c21k
September 20th, 2018, 7:15 pm
Forum: Mission Possible C
Topic: Mission Possible C
Replies: 170
Views: 19959

Re: Mission Possible C

For the action with the two effervescent heartburn pills, would we need to utilize them based on how they chemically react with the water, or do you guys think we can use their physical mass to trigger the subsequent action? The specific wording used is "into water so the reaction triggers the...
by c21k
September 20th, 2018, 6:45 pm
Forum: Mission Possible C
Topic: Mission Possible C
Replies: 170
Views: 19959

Re: Mission Possible C

For the action with the two effervescent heartburn pills, would we need to utilize them based on how they chemically react with the water, or do you guys think we can use their physical mass to trigger the subsequent action?
by c21k
September 15th, 2018, 10:11 am
Forum: Lab Events
Topic: Forensics C
Replies: 107
Views: 10419

Re: Forensics C

Ok wait so the rules say " Each participant may bring an 8.5” x 11” sheet of paper that may contain information on both sides"
But each team has two participants. Does this mean we, in total, may have two 8.5” x 11” sheets of paper?
by c21k
September 7th, 2018, 1:33 pm
Forum: Lab Events
Topic: Forensics C
Replies: 107
Views: 10419

Re: Forensics C

Oh no...one sheet? Time to condense the 5 pages.
Did anyone see any other 'bigger' changes for this year?

Also, is there anyone willing to give some advice as to how to tell cotton and linen apart? I keep mixing them up

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