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BST 322 Week 2 A+ Questions and Answers 2024
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BST 322 Week 2 A+ Questions and Answers 2024
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CHEM 120 Exam Solutions 2024define matter - ANS-anything that has mass and takes up space
what is not considered matter? - ANS-light, heat, electricity
definite shape, definite volume - ANS-solid
indefinite shape, definite volume - ANS-liquid
indefinite shape, indefinite volume - ANS-gas
pure substance - ANS-one substance; definite and constant composition; can't be
separated into 2 kinds of matter by physical means; single kind of matter
heterogeneous mixture - ANS-nonuniform in appearance; visibly different phases
homogeneous mixture - ANS-visibly one distinct phase; uniform properties
examples of pure substances - ANS-water, sugar, table salt
examples of heterogeneous mixtures - ANS-trail mix, chocolate chip cookies, cereal and
mix
examples of homogeneous mixtures - ANS-chocolate milk, orange juice, salt water
element v compound - ANS-can't be broken down into simpler substances by chemical
or physical means -v- can be broken down into elements by chemical, but not physical
means
mixture v compound - ANS-physical combinations of substances -v- chemical
combination of substances
most abundant elements in the universe as a whole plus in earth's crust -
ANS-hydrogen and oxygen
two most abundant elements in the earth's crust - ANS-oxygen and silicon
, Ag - ANS-silver Al -
ANS-aluminum Ar -
ANS-argon Au -
ANS-gold
B - ANS-boron Ba -
ANS-barium Be -
ANS-beryllium Br -
ANS-bromine C -
ANS-carbon Ca -
ANS-calcium Cl -
ANS-chlorine Cu -
ANS-copper F -
ANS-fluorine Fe -
ANS-iron
H - ANS-hydrogen
He - ANS-helium
Hg - ANS-mercury
I - ANS-iodine
K - ANS-potassium
Pt - ANS-platinum
U - ANS-uranium
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