CHEM 120 EXAM #1 EXAM WITH
CORRECT QUESTIONS AND ANSWERS
2025
define matter - CORRECT-ANSWERSanything that has mass and takes up space
what is not considered matter? - CORRECT-ANSWERSlight, heat, electricity
definite shape, definite volume - CORRECT-ANSWERSsolid
indefinite shape, definite volume - CORRECT-ANSWERSliquid
indefinite shape, indefinite volume - CORRECT-ANSWERSgas
pure substance - CORRECT-ANSWERSone substance; definite and constant composition; can't
be separated into 2 kinds of matter by physical means; single kind of matter
heterogeneous mixture - CORRECT-ANSWERSnonuniform in appearance; visibly different
phases
homogeneous mixture - CORRECT-ANSWERSvisibly one distinct phase; uniform properties
examples of pure substances - CORRECT-ANSWERSwater, sugar, table salt
examples of heterogeneous mixtures - CORRECT-ANSWERStrail mix, chocolate chip cookies,
cereal and mix
examples of homogeneous mixtures - CORRECT-ANSWERSchocolate milk, orange juice, salt
water
element v compound - CORRECT-ANSWERScan'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 - CORRECT-ANSWERSphysical combinations of substances -v- chemical
combination of substances
, most abundant elements in the universe as a whole plus in earth's crust - CORRECT-
ANSWERShydrogen and oxygen
two most abundant elements in the earth's crust - CORRECT-ANSWERSoxygen and silicon
Ag - CORRECT-ANSWERSsilver
Al - CORRECT-ANSWERSaluminum
Ar - CORRECT-ANSWERSargon
Au - CORRECT-ANSWERSgold
B - CORRECT-ANSWERSboron
Ba - CORRECT-ANSWERSbarium
Be - CORRECT-ANSWERSberyllium
Br - CORRECT-ANSWERSbromine
C - CORRECT-ANSWERScarbon
Ca - CORRECT-ANSWERScalcium
Cl - CORRECT-ANSWERSchlorine
Cu - CORRECT-ANSWERScopper
F - CORRECT-ANSWERSfluorine
Fe - CORRECT-ANSWERSiron
H - CORRECT-ANSWERShydrogen
He - CORRECT-ANSWERShelium
Hg - CORRECT-ANSWERSmercury
I - CORRECT-ANSWERSiodine
K - CORRECT-ANSWERSpotassium
Pt - CORRECT-ANSWERSplatinum
CORRECT QUESTIONS AND ANSWERS
2025
define matter - CORRECT-ANSWERSanything that has mass and takes up space
what is not considered matter? - CORRECT-ANSWERSlight, heat, electricity
definite shape, definite volume - CORRECT-ANSWERSsolid
indefinite shape, definite volume - CORRECT-ANSWERSliquid
indefinite shape, indefinite volume - CORRECT-ANSWERSgas
pure substance - CORRECT-ANSWERSone substance; definite and constant composition; can't
be separated into 2 kinds of matter by physical means; single kind of matter
heterogeneous mixture - CORRECT-ANSWERSnonuniform in appearance; visibly different
phases
homogeneous mixture - CORRECT-ANSWERSvisibly one distinct phase; uniform properties
examples of pure substances - CORRECT-ANSWERSwater, sugar, table salt
examples of heterogeneous mixtures - CORRECT-ANSWERStrail mix, chocolate chip cookies,
cereal and mix
examples of homogeneous mixtures - CORRECT-ANSWERSchocolate milk, orange juice, salt
water
element v compound - CORRECT-ANSWERScan'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 - CORRECT-ANSWERSphysical combinations of substances -v- chemical
combination of substances
, most abundant elements in the universe as a whole plus in earth's crust - CORRECT-
ANSWERShydrogen and oxygen
two most abundant elements in the earth's crust - CORRECT-ANSWERSoxygen and silicon
Ag - CORRECT-ANSWERSsilver
Al - CORRECT-ANSWERSaluminum
Ar - CORRECT-ANSWERSargon
Au - CORRECT-ANSWERSgold
B - CORRECT-ANSWERSboron
Ba - CORRECT-ANSWERSbarium
Be - CORRECT-ANSWERSberyllium
Br - CORRECT-ANSWERSbromine
C - CORRECT-ANSWERScarbon
Ca - CORRECT-ANSWERScalcium
Cl - CORRECT-ANSWERSchlorine
Cu - CORRECT-ANSWERScopper
F - CORRECT-ANSWERSfluorine
Fe - CORRECT-ANSWERSiron
H - CORRECT-ANSWERShydrogen
He - CORRECT-ANSWERShelium
Hg - CORRECT-ANSWERSmercury
I - CORRECT-ANSWERSiodine
K - CORRECT-ANSWERSpotassium
Pt - CORRECT-ANSWERSplatinum
