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Chemistry, Matter, Mixtures
Test Description: Review for separating mixtures
Instructions: Answer all questions to get your test result.
1) The scientific method is a
A
series of exact steps
B
strategy for drawing sound conclusions
C
theory
D
lengthy experiment
2) A statement or mathematical equation that describes a fact or relationship found in the universe
A
law
B
hypothesis
C
theory
D
assumption
3) A theory is an accepted explaination of an observed phenomenon until
A
repeated data and observation conflict with the theory
B
an eminent scientist feel that the theory is inadequate
C
scientists disagree about the methods used to gather the data
D
one study conflicts with theory
4) Characteristic properties of a solid are:
A
indefinite shape, indefinite volume
B
definite shape, indefinite volume
C
indefinite shape, definite volume
D
definite shape, definite volume
5) The state of matter that can fill a room or fit in ajar is
A
gas
B
plasma
C
solid
D
liquid
6) An example of a pure substance is
A
salt
B
apple juice
C
tap water
D
chicken noodle soup
7) A chemical change occurs when
A
salt deposits form from evaporated seawater
B
a leaf changes color
C
dissolved minerals solidify to form a crystal
D
ethanol is purified through distallation
8) Which is not a homogenous mixture?
A
cranberry juice
B
corn oil
C
dissolved sugar water
D
salsa
9) The ratio of an object's mass to its volume is its
A
density
B
amount of substance
C
number of atoms
D
molecular weight
10) Two features that characterize matter are
A
weight and volume
B
mass and volume
C
weight and velocity
D
mass and velocity
11) Pure substances can be
A
compounds
B
both elements and compounds
C
mixtures
D
elements
12) The alloy brass is an example of a(n)
A
heterogenous mixture
B
compound
C
homogeneous mixture
D
element
13) Physical means can be used to separate
A
mixtures
B
pure substances
C
elements
D
compounds
14) When used to separate mixtures, which of the following procedures relies on differences in particle size?
A
evaporation
B
distillation
C
atraction to a magnet
D
filtration
15) Which of the following observations does not indicate that a chemical change has occured?
A
change of state
B
release of a gas
C
absorption of energy
D
formation of precipitate
*select an answer for all questions
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