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CHEM 120 Exam 1-Questions with Correct Answers/ Verified/ Latest Update (2024/2025
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CHEM 120 Exam 1-Questions with Correct Answers/ Verified/ Latest Update (2024/2025)
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CHEM 120 Exam 1-Questions with Correct Answers/ Verified/Latest Update (2024/2025)
compound - ✔✔pure substance made of two or more elements chemically joined together
h2o, penicillin, nacl - ✔✔examples of compounds
physical combination of 2 or more substances (elements and compounds) - ✔✔define
mixture
homogenous and heterogenous - ✔✔2 types of mixtures
components - ✔✔mixtures can be separated into different __________
mixture - ✔✔almost everything is a ______
solution - ✔✔another name for homo mixture
same composition throughout - ✔✔define homo mixture
salt dissolved in water - ✔✔example of homo mixture
not uniform composition and varies throughout - ✔✔define hetero mixture
hetero mixture - ✔✔mix of metals is a ____
homo mix - ✔✔classify matter: coffee
homo mix - ✔✔classify matter: water
,pure substance element - ✔✔classify matter: radon
hetero mix - ✔✔classify matter: egg
hetero mix - ✔✔classify matter: wood
conducts electricity, shiny, ductile, malleable, solid at room temp - ✔✔define metals
mercury Hg - ✔✔metal that is liquid at room temp
brittle when solid, various phases and colors (solid, liquid, and gas) - ✔✔define nonmetals
carbon, phosphorous, sulfur - ✔✔3 examples of nonmetals
varying properties of metals and nonmetals - ✔✔describe semimetals or metalloids
boron (b), silicon (si), germanium (ge) - ✔✔3 examples of metalloids
metalloid - ✔✔b, si, ge, as, sb, te, po, at (8 total)
metals - ✔✔
nonmetals - ✔✔
hetero mix - ✔✔Italian dressing contains olive oil and vinegar, which will separate out from
each other if left to sit. This makes the dressing a:
mixture - ✔✔A bar of soap is an example of a(n)
, compound - ✔✔A deicing agent, calcium chloride, is an example of a(n)
element - ✔✔A gold bar is an example of a(n)
hetero mix - ✔✔A human is an example of a(n)
element - ✔✔An iron nail is an example of a(n)
solution - ✔✔Gasoline is composed of a variety of different liquid hydrocarbons, which do
not separate as time passes. Gasoline is an example of a:
mixture - ✔✔Apple juice is an example of a(n)
c - ✔✔Which of the following describes a chemical change involving water?
a. h2o (l)--- h2o (s)
b. h2o(s)--- h2o(g)
c. h2o(l)-- h2(g) + 1/2o2(g)
d. h2o(g)---- h2o(l)
flammability - ✔✔which of the following are chem props of matter?
a. mass
b. volume
c. density
d. flammability
c - ✔✔Which of the following is a physical change?
A. An alkaline battery is discharged.
B. A lithium-ion battery is recharged.
C. Water is boiled in a microwave.
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