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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
an eminent scientist feel that the theory is inadequate
B
repeated data and observation conflict with the theory
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
definite shape, definite volume
B
definite shape, indefinite volume
C
indefinite shape, indefinite volume
D
indefinite shape, definite volume
5) The state of matter that can fill a room or fit in ajar is
A
plasma
B
solid
C
gas
D
liquid
6) An example of a pure substance is
A
tap water
B
salt
C
apple juice
D
chicken noodle soup
7) A chemical change occurs when
A
salt deposits form from evaporated seawater
B
ethanol is purified through distallation
C
dissolved minerals solidify to form a crystal
D
a leaf changes color
8) Which is not a homogenous mixture?
A
dissolved sugar water
B
cranberry juice
C
salsa
D
corn oil
9) The ratio of an object's mass to its volume is its
A
density
B
molecular weight
C
amount of substance
D
number of atoms
10) Two features that characterize matter are
A
weight and velocity
B
weight and volume
C
mass and volume
D
mass and velocity
11) Pure substances can be
A
elements
B
mixtures
C
compounds
D
both elements and compounds
12) The alloy brass is an example of a(n)
A
element
B
compound
C
homogeneous mixture
D
heterogenous mixture
13) Physical means can be used to separate
A
elements
B
compounds
C
pure substances
D
mixtures
14) When used to separate mixtures, which of the following procedures relies on differences in particle size?
A
evaporation
B
filtration
C
distillation
D
atraction to a magnet
15) Which of the following observations does not indicate that a chemical change has occured?
A
change of state
B
absorption of energy
C
formation of precipitate
D
release of a gas
*select an answer for all questions
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