CHM 1020 exam 1
elements - ANSone of the 100 pure substances in our world from which compounds are formed
compound - ANSpure substance made up of two or more different elements in a fixed,
characteristic chemical combination
mixture - ANSphysical combination of two or more pure substances
metal - ANSshiny elements, conduct heat and electricity very well
metalloids - ANS(8) elements between metals and nonmetals
nonmetals - ANSdo not conduct heat or electricity well, no one characteristic
groups - ANSvertical columns, organized by properties and numbered left to right
halogen - ANSGroup 7A; fluorine, chlorine, bromine, iodine
noble gas - ANSGroup 8A; few, if any chemical reactions (argon, helium, radon)
ppm/ppb/1% ratio - ANS1 ppb < 1 ppm <1%
Risk assessment - ANSprocess of evaluating scientific data and making predictions in an
organized manner about the outcome
Toxicity - ANSintrinsic health hazard of a substance
Exposure - ANSamount a substance is encountered
Carbon monoxide - ANSsilent killer, no odor, no taste, no color; automobile exhaust, charcoal
grills, propane
ozone - ANSsharp odor, photocopier, electric motor; can reduce lung function however helps
with ridding of UV radiation
sulfur dioxide - ANSsharp, unpleasant odor, dissolves in lung tissue to form acid- affects lung
function; (burning coal)
nitrogen dioxide - ANSbrown color, damages lungs, hot engines, hot fires of coal-fired power
plants
elements - ANSone of the 100 pure substances in our world from which compounds are formed
compound - ANSpure substance made up of two or more different elements in a fixed,
characteristic chemical combination
mixture - ANSphysical combination of two or more pure substances
metal - ANSshiny elements, conduct heat and electricity very well
metalloids - ANS(8) elements between metals and nonmetals
nonmetals - ANSdo not conduct heat or electricity well, no one characteristic
groups - ANSvertical columns, organized by properties and numbered left to right
halogen - ANSGroup 7A; fluorine, chlorine, bromine, iodine
noble gas - ANSGroup 8A; few, if any chemical reactions (argon, helium, radon)
ppm/ppb/1% ratio - ANS1 ppb < 1 ppm <1%
Risk assessment - ANSprocess of evaluating scientific data and making predictions in an
organized manner about the outcome
Toxicity - ANSintrinsic health hazard of a substance
Exposure - ANSamount a substance is encountered
Carbon monoxide - ANSsilent killer, no odor, no taste, no color; automobile exhaust, charcoal
grills, propane
ozone - ANSsharp odor, photocopier, electric motor; can reduce lung function however helps
with ridding of UV radiation
sulfur dioxide - ANSsharp, unpleasant odor, dissolves in lung tissue to form acid- affects lung
function; (burning coal)
nitrogen dioxide - ANSbrown color, damages lungs, hot engines, hot fires of coal-fired power
plants
