Arsenic CD project

Arsenic CD project

Melanosis/Keratosis     melanosis (hyper pigmentation) occurs when areas of the skin turn abnormally dark.   The abnormally dark spots occur when the body over produces the skin pigment Melanin.   Melanosis can be caused by exposure to arsenic.   Seborrheic Keratoses are brown, black, or flesh colored growths on the skin.   Generally, these growths look like they were glued on and have a flat, waxy surface.   They vary in size.   Exposure to arsenic may cause these growths.

She’s a Lethal Metalloid     arsenic fits into the category of metalloids.   Metalloids are the elements found along the stair-step line that distinguishes metals from non-metals.   Metalloids have properties of metals and non-metals.   Arsenic does conduct electricity, like a metal.   And, of course we had to include lethal, because arsenic is poisonous.

Sudsy assassination     They think Albertus Magnus obtained arsenic in 1250   A.D. by heating soap together with
Orpiment.

Massacre of Phases     Arsenic changes directly from a solid to a gas.   It skips the liquid phase, unless under special conditions.   So, it may seen that the phases are messed up.

As always…     As is the symbol for arsenic.   The atomic number is 33, the atomic mass is 74.9216 amu., and it has 42 neutrons.   The name origin for arsenic is from the Greek word Arsenikos.   Arsenic is a steel gray, very brittle, crystalline, semimetal, solid.
Arsenic tarnishes in air.   Some uses for arsenic are bronzing, pyrotechnics, rat poisoning, and some insecticides.