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