CHEM 120 Exam #1

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CHEM 120 Exam #1

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Institution CHEM 120

Course CHEM 120

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Exam of 12 pages for the course CHEM 120 at CHEM 120 (CHEM 120 Exam #1)

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CHEM 120 Exam #1

define matter - answers-anything that has mass and takes up space

what is not considered matter? - answers-light, heat, electricity

definite shape, definite volume - answers-solid

indefinite shape, definite volume - answers-liquid

indefinite shape, indefinite volume - answers-gas

pure substance - answers-one substance; definite and constant composition; can't be
separated into 2 kinds of matter by physical means; single kind of matter

heterogeneous mixture - answers-nonuniform in appearance; visibly different phases

homogeneous mixture - answers-visibly one distinct phase; uniform properties

examples of pure substances - answers-water, sugar, table salt

examples of heterogeneous mixtures - answers-trail mix, chocolate chip cookies, cereal
and mix

examples of homogeneous mixtures - answers-chocolate milk, orange juice, salt water

element v compound - answers-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 - answers-physical combinations of substances -v- chemical
combination of substances

most abundant elements in the universe as a whole plus in earth's crust - answers-
hydrogen and oxygen

two most abundant elements in the earth's crust - answers-oxygen and silicon

, Ag - answers-silver

Al - answers-aluminum

Ar - answers-argon

Au - answers-gold

B - answers-boron

Ba - answers-barium

Be - answers-beryllium

Br - answers-bromine

C - answers-carbon

Ca - answers-calcium

Cl - answers-chlorine

Cu - answers-copper

F - answers-fluorine

Fe - answers-iron

H - answers-hydrogen

He - answers-helium

Hg - answers-mercury

I - answers-iodine

K - answers-potassium

Pt - answers-platinum

U - answers-uranium

Li - answers-lithium

Mg - answers-magnesium

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Uploaded on: April 21, 2026
Number of pages: 12
Written in: 2025/2026
Type: Exam (elaborations)
Contains: Questions & answers

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