chem lab exam
acute
sudden/brief. (short term exposure) acute health effect develops soon after exposure
biaccumulation
chemical accumulation in organism
chronic
long term; develops after continuous exposure
corrosive
destroys metals and human skin. irreversible effects
flash point
the lowest temp at which liquid/solid gives off enough vapour to form a flammable air vapour mixture near its surface
the lower the flashpoint, the _________ the fire hazard.
greater
LC50
the CONCENRATION of a material in air which causes 50% death of a group population
LD50
dermal/oral quantity that causes death of 50% of group population tested upon
a smaller LD50/LC50 means _______ toxic
more
pyrophoric
substance that can self ignite in air
sensitization
overtime development of an allergic reaction to a substance
synergistic
combo of chemicals have greater risk than if they were handled individually
teratogen
substance that causes birth defects
water reactive
subsance+water = flammable/health hazardous gas.