CHEM 120 Exam #1
define matter -ANSanything that has mass and takes up space
what is not considered matter? -ANSlight, heat, electricity
definite shape, definite volume -ANSsolid
indefinite shape, definite volume -ANSliquid
indefinite shape, indefinite volume -ANSgas
pure substance -ANSone substance; definite and constant composition; can't be separated into 2 kinds
of matter by physical means; single kind of matter
heterogeneous mixture -ANSnonuniform in appearance; visibly different phases
homogeneous mixture -ANSvisibly one distinct phase; uniform properties
examples of pure substances -ANSwater, sugar, table salt
examples of heterogeneous mixtures -ANStrail mix, chocolate chip cookies, cereal and mix
examples of homogeneous mixtures -ANSchocolate milk, orange juice, salt water
element v compound -ANScan'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 -ANSphysical combinations of substances -v- chemical combination of substances
most abundant elements in the universe as a whole plus in earth's crust -ANShydrogen and oxygen
two most abundant elements in the earth's crust -ANSoxygen and silicon
Ag -ANSsilver
Al -ANSaluminum
Ar -ANSargon
Au -ANSgold
B -ANSboron
Ba -ANSbarium
Be -ANSberyllium
Br -ANSbromine
C -ANScarbon
Ca -ANScalcium
Cl -ANSchlorine
define matter -ANSanything that has mass and takes up space
what is not considered matter? -ANSlight, heat, electricity
definite shape, definite volume -ANSsolid
indefinite shape, definite volume -ANSliquid
indefinite shape, indefinite volume -ANSgas
pure substance -ANSone substance; definite and constant composition; can't be separated into 2 kinds
of matter by physical means; single kind of matter
heterogeneous mixture -ANSnonuniform in appearance; visibly different phases
homogeneous mixture -ANSvisibly one distinct phase; uniform properties
examples of pure substances -ANSwater, sugar, table salt
examples of heterogeneous mixtures -ANStrail mix, chocolate chip cookies, cereal and mix
examples of homogeneous mixtures -ANSchocolate milk, orange juice, salt water
element v compound -ANScan'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 -ANSphysical combinations of substances -v- chemical combination of substances
most abundant elements in the universe as a whole plus in earth's crust -ANShydrogen and oxygen
two most abundant elements in the earth's crust -ANSoxygen and silicon
Ag -ANSsilver
Al -ANSaluminum
Ar -ANSargon
Au -ANSgold
B -ANSboron
Ba -ANSbarium
Be -ANSberyllium
Br -ANSbromine
C -ANScarbon
Ca -ANScalcium
Cl -ANSchlorine
