CHEM 120 FULL STUDY SHEET QUESTIONS AND CORRECT ANSWERS COLLECTION

CHEM 120 FULL STUDY SHEET QUESTIONS
AND CORRECT ANSWERS COLLECTION

●● what is not considered matter?
Answer: light, heat, electricity


●● definite shape, definite volume
Answer: solid


●● indefinite shape, definite volume
Answer: liquid


●● indefinite shape, indefinite volume
Answer: gas


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


●● heterogeneous mixture
Answer: nonuniform in appearance; visibly different phases

,●● homogeneous mixture
Answer: visibly one distinct phase; uniform properties


●● examples of pure substances
Answer: water, sugar, table salt


●● examples of heterogeneous mixtures
Answer: trail mix, chocolate chip cookies, cereal and mix


●● examples of homogeneous mixtures
Answer: chocolate milk, orange juice, salt water


●● element v compound
Answer: 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
Answer: physical combinations of substances -v- chemical combination
of substances


●● most abundant elements in the universe as a whole plus in earth's
crust

, Answer: hydrogen and oxygen


●● two most abundant elements in the earth's crust
Answer: oxygen and silicon


●● Ag
Answer: silver


●● Al
Answer: aluminum


●● Ar
Answer: argon


●● Au
Answer: gold


●● B
Answer: boron


●● Ba
Answer: barium