Powders 1
This powder is tan colored and unreactive.
Yeast
This powder has square grains.
Salt
This liquid is very basic.
Ammonia/Bleach
This is the only synthetic fiber.
Nylon
What fingerprint looks like a tent?
Tented arch.
This powder has the same chemical formula as limestone.
Calcium Carbonate
Forms oobleck when mixed with water
Cornstarch
This liquid bubbles when iodine is added to it
Animal Fiber produced by insects: smells like burning hair/feathers
silk
How many deltas are in a plain arch?
None; 0
This powder smells of vinegar when mixed with HCl.
Sodium Acetate
This powder turns iodine clear.
Vitamin C / Ascorbic Acid
What hair looks like a spine under a microscope? (fine hairs)
Cat Hair
This fiber has a pungent smell when burned, and burns quickly.
Acrylic
A whorl with an "S" shape is what kind of whorl?
Double Loop Whorl
Clumps and turns black in iodine
Flour
The only two powders that fizz in HCl.
Alka-Seltzer & Baking Soda
What color is Bromothymol Blue in acidic conditions?
Yellow
Plant Fiber: Smells like burning paper when burnt
Cotton
What kind of fingerprint is invisible to the naked eye?
Latent
This powder has a pH of 2.
Ascorbic Acid / Vitamin C
This powder is light yellow and ___________ in water.
Gelatin; turns to gel; swells
What is hair made of AND what is the name of the centermost part of the hair?
Keratin; Medula
Only fiber that sparks when burned
Linen
What fingerprint subclass looks like a loop and a whorl?
Central Pocket Loop Whorl; Central Pocket Whorl