Powders
What powder fizzes in hydrochloric acid, Iodine, and water?
Alka Seltzer
What is the chemical formula of aluminum
Which liquid has the lowest ph
Vinegar
Name 3 synthetic fibers
nylon, polyester, spandex, rayon
what does the fox say?
we'll never know
What powder turns clear in Iodine
Vitamin C
What metal in magnetic?
iron
Name all of the crime busters liquids and if they are an acid, base, or neutral
rubbing alc- neutral
hydrogen- neutral
vinegar- acid
lemon juice- acid
water- neutral
ammonia- base
what is the thickest layer of a hair?
cortex
Name 3 types of fingerprint minutiae
may vary
what are the two main uses for sodium acetate?
handwarmers, salt and vinegar chips
What 3 metals fizz in Hcl
zinc, magnesium, and aluminum
Which liquid has the highest ph
ammonia
plant- slow burn, smells like wood
animal- smells horrible, large ball of ash, curls away from flame, self extinguishing
synthetic- melts, curls away from flame, self extinguishing
What is one step of PCR?
denaturation, annealing, elongation
Name 7 edible powders
Flour, baking soda, salt, cornstarch, yeast, gelatin, sugar, sodium acetate
What is the main use for magnesium
gunpowder, fireworks
which liquid, when mixed with bleach, produces vapor strong enough to kill you
ammonia
what protein is hair made up of?
keratin
what is the recycling code for PMMA?
7
A mixture contains irregular crystals, fizzes in HCl, turns black in iodine, is partly soluble and soupy in water, and is a uniform tan-ish color. Which mixture of 3 powders is it?
What is the only crime busters metal that can not be found in our body naturally?
aluminum
What is the difference between an acidic and basic liquid?
Acids add hydrogen ions while bases contribute hydroxide ions to a solution
What cuticle shape does cat hair have? (spinous, imbricate, or coronal)
spinous
What is Lombardi's principle
Something is always taken and left behind at a crime scene