CHEM 120 Exam #1 |109 Questions
with Solutions
define matter - -anything that has mass and takes up space
- what is not considered matter? - -light, heat, electricity
- definite shape, definite volume - -solid
- indefinite shape, definite volume - -liquid
- indefinite shape, indefinite volume - -gas
- pure substance - -one substance; definite and constant composition; can't
be separated into 2 kinds of matter by physical means; single kind of matter
- heterogeneous mixture - -nonuniform in appearance; visibly different
phases
- homogeneous mixture - -visibly one distinct phase; uniform properties
- examples of pure substances - -water, sugar, table salt
- examples of heterogeneous mixtures - -trail mix, chocolate chip cookies,
cereal and mix
- examples of homogeneous mixtures - -chocolate milk, orange juice, salt
water
- element v compound - -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 - -physical combinations of substances -v- chemical
combination of substances
- most abundant elements in the universe as a whole plus in earth's crust - -
hydrogen and oxygen
- two most abundant elements in the earth's crust - -oxygen and silicon
- Ag - -silver
- Al - -aluminum
, - Ar - -argon
- Au - -gold
- B - -boron
- Ba - -barium
- Be - -beryllium
- Br - -bromine
- C - -carbon
- Ca - -calcium
- Cl - -chlorine
- Cu - -copper
- F - -fluorine
- Fe - -iron
- H - -hydrogen
- He - -helium
- Hg - -mercury
- I - -iodine
- K - -potassium
- Pt - -platinum
- U - -uranium
- Li - -lithium
- Mg - -magnesium
- N - -nitrogen
- S - -sulfur
with Solutions
define matter - -anything that has mass and takes up space
- what is not considered matter? - -light, heat, electricity
- definite shape, definite volume - -solid
- indefinite shape, definite volume - -liquid
- indefinite shape, indefinite volume - -gas
- pure substance - -one substance; definite and constant composition; can't
be separated into 2 kinds of matter by physical means; single kind of matter
- heterogeneous mixture - -nonuniform in appearance; visibly different
phases
- homogeneous mixture - -visibly one distinct phase; uniform properties
- examples of pure substances - -water, sugar, table salt
- examples of heterogeneous mixtures - -trail mix, chocolate chip cookies,
cereal and mix
- examples of homogeneous mixtures - -chocolate milk, orange juice, salt
water
- element v compound - -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 - -physical combinations of substances -v- chemical
combination of substances
- most abundant elements in the universe as a whole plus in earth's crust - -
hydrogen and oxygen
- two most abundant elements in the earth's crust - -oxygen and silicon
- Ag - -silver
- Al - -aluminum
, - Ar - -argon
- Au - -gold
- B - -boron
- Ba - -barium
- Be - -beryllium
- Br - -bromine
- C - -carbon
- Ca - -calcium
- Cl - -chlorine
- Cu - -copper
- F - -fluorine
- Fe - -iron
- H - -hydrogen
- He - -helium
- Hg - -mercury
- I - -iodine
- K - -potassium
- Pt - -platinum
- U - -uranium
- Li - -lithium
- Mg - -magnesium
- N - -nitrogen
- S - -sulfur
