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