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CHM 1020 exam 1 Questions and answers latest update
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CHM 1020 exam 1 Questions and answers latest update
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CHM 1020 exam 1elements - correct answer one of the 100 pure substances in our world from which compounds are
formed
compound - correct answer pure substance made up of two or more different elements in a fixed,
characteristic chemical combination
mixture - correct answer physical combination of two or more pure substances
metal - correct answer shiny elements, conduct heat and electricity very well
metalloids - correct answer (8) elements between metals and nonmetals
nonmetals - correct answer do not conduct heat or electricity well, no one characteristic
groups - correct answer vertical columns, organized by properties and numbered left to right
halogen - correct answer Group 7A; fluorine, chlorine, bromine, iodine
noble gas - correct answer Group 8A; few, if any chemical reactions (argon, helium, radon)
ppm/ppb/1% ratio - correct answer 1 ppb < 1 ppm <1%
Risk assessment - correct answer process of evaluating scientific data and making predictions in an
organized manner about the outcome
Toxicity - correct answer intrinsic health hazard of a substance
Exposure - correct answer amount a substance is encountered
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