Like specifically? I can't find out anywhere (or a consistent idea, at least) how to tell apart wool from silk or linen from cottonSilverBreeze wrote: ↑Tue Feb 25, 2020 8:26 pmLook for flame color/behavior, smoke, residual bead, more specific smell, etc. Also check for pictures online.Galahad wrote: ↑Tue Feb 25, 2020 6:01 pmHow can burning them differentiate them? I usually just go off of smell which can just identify plant or animal, but beyond that I'm not sure.WangwithaTang wrote: ↑Mon Feb 17, 2020 9:51 pm
Usually, they will have burn test results to differentiate.
Forensics C
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Re: Forensics C
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Re: Forensics C
If you can, try and get a hold of the fibers and try the burn tests yourself. Alternatively, you can tell these fibers apart from looking at them under a microscope. Wool will have scale-like structures on it, silk is usually smooth. Linen usually has bumps, or kinks in it, while cotton looks like a spiral or helix. Here are some great resources. Look Here and HereGalahad wrote: ↑Thu Feb 27, 2020 4:38 pmLike specifically? I can't find out anywhere (or a consistent idea, at least) how to tell apart wool from silk or linen from cottonSilverBreeze wrote: ↑Tue Feb 25, 2020 8:26 pmLook for flame color/behavior, smoke, residual bead, more specific smell, etc. Also check for pictures online.
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Re: Forensics C
Can someone give me a list of all the powders in Benedict's solution?
sodium acetate:
sodium chloride:
sodium hydrogen carbonate:
sodium carbonate:
lithium chloride:
potassium chloride:
calcium nitrate:
calcium sulfate:
calcium carbonate:
cornstarch:
glucose:
sucrose:
magnesium sulfate:
boric acid:
ammonium chloride:
sodium acetate:
sodium chloride:
sodium hydrogen carbonate:
sodium carbonate:
lithium chloride:
potassium chloride:
calcium nitrate:
calcium sulfate:
calcium carbonate:
cornstarch:
glucose:
sucrose:
magnesium sulfate:
boric acid:
ammonium chloride:
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Re: Forensics C
Look hereckenn4189 wrote: ↑Mon Mar 02, 2020 10:03 am Can someone give me a list of all the powders in Benedict's solution?
sodium acetate:
sodium chloride:
sodium hydrogen carbonate:
sodium carbonate:
lithium chloride:
potassium chloride:
calcium nitrate:
calcium sulfate:
calcium carbonate:
cornstarch:
glucose:
sucrose:
magnesium sulfate:
boric acid:
ammonium chloride:
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Re: Forensics C
That helps a bunch, thanks! Also, what is the reaction of ascorbic acid (Vitamin C) with NaOH and HCl?
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Re: Forensics C
Vit C is not on the Forensics list. It is a division B powder for Crime Busters.
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Former Events: Ecology, Water Quality, Green Gen, Ornithology, Forestry, Disease Detectives, Forensics, Chem Lab, Env Chem, Sounds, Dynamic Planet, Crime Busters, Potions & Poisons, Exp Design, Towers, Mystery Arch, Reach for the Stars, Mission Possible
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Re: Forensics C
Yep, just noticed that...thanks!SilverBreeze wrote: ↑Mon Mar 02, 2020 4:32 pmVit C is not on the Forensics list. It is a division B powder for Crime Busters.
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Re: Forensics C
How do you tell the difference between cow and horse hair? They look exactly the same.
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Re: Forensics C
Cow hair typically has more cortical fusi and ovoid bodies than horsehair under a microscope. If you can touch, horse hair typically feels more stronger and coarser than cow hair. Also the dark part in the middle of the hair (either the medulla or cortex depending on the image), is normally wider in horse hair.WangwithaTang wrote: ↑Tue Mar 03, 2020 4:00 pm How do you tell the difference between cow and horse hair? They look exactly the same.
Hope this helps!
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Re: Forensics C
Okay, thank you!mrsherwood18 wrote: ↑Tue Mar 03, 2020 8:29 pmCow hair typically has more cortical fusi and ovoid bodies than horsehair under a microscope. If you can touch, horse hair typically feels more stronger and coarser than cow hair. Also the dark part in the middle of the hair (either the medulla or cortex depending on the image), is normally wider in horse hair.WangwithaTang wrote: ↑Tue Mar 03, 2020 4:00 pm How do you tell the difference between cow and horse hair? They look exactly the same.
Hope this helps!