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Physical Science 2B CCA 2021-22
Test Description: S
Instructions: Answer all questions to get your test result.
1) Classification provides a structure within which we can conduct a ________ study.
A
hypothetical
B
perfect
C
scientific
D
nominal
2) We classify matter according to its ______________.
A
properties
B
progress
C
workability
D
usefulness
3) These properties of matter can be physical, ________, or nuclear.
A
visible
B
compound
C
energy
D
chemical
4) A pure substance is a material made of only one kind of _________ or compound; it is not a mixture.
A
solution
B
electron
C
element
D
proton
5) An element is a pure substance that consists of atoms with the same atomic _______.
A
mass
B
number
C
radius
D
weight
6) _______ are the simplest of the pure substances.
A
Mixtures
B
Compounds
C
Solutions
D
Elements
7) The element mercury is a _______ containing only atoms.
A
solution
B
liquid
C
compound
D
solid
8) A compound is a pure substance consisting of atoms of ______ or more different elements that are ________ combined.
A
two, physically
B
two, chemically
C
three, chemically
D
one, chemically
9) Atoms of a particular compound ________ combine in the same proportion.
A
always
B
rarely
C
sometimes
D
often
10) Table salt (sodium chloride, NaCl) is a crystalline compound made of _________ bonded with chlorine.
A
sodium
B
Calcium
C
lithium
D
hydrogen
11) Anything that is not a pure substance is a (an) _______—a physical combination of two or more substances.
A
mixture
B
element
C
impurity
D
compound
12) he two key aspects of mixtures are (1) that they are only physically combined, not chemically, and (2) that the proportion of substances within the mixture is ________.
A
unchanging
B
variable
C
fixed
D
definite
13) A __________ mixture does not have a uniform appearance since the substances are unevenly distributed.
A
molecular
B
chemical
C
heterogeneous
D
homogeneous
14) A chocolate chip cookie is a ______ mixture because the chocolate is not _______ distributed throughout the cookie.
A
homogeneous, perfectly
B
homogeneous, evenly
C
heterogeneous, evenly
D
homogeneous, found
15) When different substances are mixed so that they have a uniform appearance throughout, a ________ mixture results.
A
homogeneous
B
rare
C
heterogeneous
D
pure
16) Another term for homogeneous mixture is ___________.
A
colloid
B
solution
C
molecule
D
suspension
17) _________ is a homogeneous mixture.
A
cereal and milk
B
Tea
C
Salad
D
salsa
18) The four most common states of matter are solid, liquid, gas (or vapor), and _______.
A
sublimation
B
deposition
C
bose condensate
D
plasma
19) Scientists will often refer to the different states as _______.
A
parts
B
matter
C
phases
D
particles
20) The _________ model states that all matter consists of tiny particles in constant random _______.
A
wave, motion
B
scientific, vibration
C
particle, activity
D
particle, motion
*select an answer for all questions
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