Forensics?

iwtban
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Re: Forensics?

Postby iwtban » Tue Feb 17, 2009 8:04 am

dudeincolorado wrote:I have never flame tested with a candle, is it much different? Obviously, the flame is less strong but is there anything else notable?

Density tests should work.... make sure you stir the pellets to get rid of the surface tension.

I don't think you can see the color, like LiCl with a reddish color when you use candle. The flame is not strong enough

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Re: Forensics?

Postby adam124218 » Wed Feb 18, 2009 3:16 am

You can definitely see color for LiCl and KCl in a candle. I've really only ever used candles and we do just fine. You can't really see the green flame for boric acid and the calciums won't burn red, but that doesn't matter that much.

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Re: Forensics?

Postby dudeincolorado » Wed Feb 18, 2009 4:21 am

would calcium nitrate show up well?
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Re: Forensics?

Postby superjenius » Wed Feb 18, 2009 4:50 am

dudeincolorado wrote:would calcium nitrate show up well?



from a candle's flame? the last time i did it (with a candle) i was unable to see total orange; i used a piece of cobalt blue glass (for the first and last time) to make sure.

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Re: Forensics?

Postby dudeincolorado » Wed Feb 18, 2009 5:08 am

But you could still see the orangeness right?
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Re: Forensics?

Postby superjenius » Wed Feb 18, 2009 5:32 am

with the glass: it was a definite orange
without it: yellowish orange
but yeah...to directly answer your obvious yes or no question: Yes, I could still see the orange.

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Re: Forensics?

Postby detectiveJ » Tue Mar 03, 2009 2:47 am

did anyone do Forensics this year that did it last year? does anyone agree with me that this year's test was easier than last years?
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Re: Forensics?

Postby ravensrunner14 » Tue Mar 03, 2009 3:46 pm

do you have any advice for a first timer?
we've studied some stuff but kinda just winging it.
please offer any advice you can! thanks :]
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3rd: Picture This!
4th: Forensics

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Re: Forensics?

Postby dudeincolorado » Wed Mar 04, 2009 12:02 am

You're in B and doing forensics? Could you be looking for science crimebusters?
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Re: Forensics?

Postby ravensrunner14 » Fri Mar 06, 2009 2:39 am

nope it's forensics. i'm almost positivie we're division B. and that is one of the events i'm in...
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3rd: Picture This!
4th: Forensics

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Re: Forensics?

Postby dudeincolorado » Fri Mar 06, 2009 5:21 am

Ok, while is would know my powders, polymers and such inside and out thats worth about 50% of the event; I would also learn how to write good crime essays seeing that they are worth 25% so if you just do those two thats about 75% of the event write there. The rest is like match a fingerprint and do chromatography which if it come down to it you can wing it.
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Re: Forensics?

Postby Flavorflav » Fri Mar 06, 2009 3:03 pm

ravensrunner14 wrote:nope it's forensics. i'm almost positivie we're division B. and that is one of the events i'm in...

Division B does not do Forensics, you do Crimebusters, which is very similar but not the same. Unless your region is doing something really weird.

What grade are you in? Are you competing with a middle school team or a high school team?

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Re: Forensics?

Postby ravensrunner14 » Tue Mar 10, 2009 12:34 pm

ok. i found out that i am in division C. i got confused.
so you said know your polymers and stuff like that?
i'm super nervous..i've never competed like this.
i hope it isn't too hard.
anymore advice?
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3rd: Picture This!
4th: Forensics

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Re: Forensics?

Postby detectiveJ » Sat Mar 14, 2009 11:04 pm

its okay. basically just know your powders! thats like the most important thing. check the soinc.org website for tips and stuff. are you competing for regionals?
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Re: Forensics?

Postby dyt » Tue Mar 17, 2009 6:52 pm

What do you use cobalt glass for? We need help please!:] :shock:


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