7333353
Descripción
Test por Cecilia Bui, actualizado hace más de 1 año
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Creado por Cecilia Bui
hace más de 7 años
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Pregunta 1
Pregunta
Which state of matter is characterized by having a definite shape and a definite volume?
Respuesta
-
gas
-
liquid only
-
solid only
-
both b and c
Pregunta 2
Pregunta
[blank_start]distillation[blank_end] - a process in which a liquid is boiled to produce a vapor that is condensed into a liquid
Respuesta
-
distillation
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mass
-
chemical reaction
-
compound
-
element
-
homogeneous
Pregunta 3
Pregunta
[blank_start]mass[blank_end] - amount of matter an object contains
Respuesta
-
mass
-
chemical reaction
-
compound
-
distillation
-
element
-
homogeneous
Pregunta 4
Pregunta
[blank_start]compound[blank_end] - composed of two or more substances chemically combined in a fixed proportion
Respuesta
-
compound
-
mass
-
chemical reaction
-
element
-
homogeneous
-
distillation
Pregunta 5
Pregunta
[blank_start]homogeneous[blank_end] - describes mixture with a uniform composition
Respuesta
-
homogeneous
-
element
-
compound
-
distillation
-
mass
-
chemical reaction
Pregunta 6
Pregunta
[blank_start]element[blank_end] - substance that cannot be changed into simpler substances by chemical means
Respuesta
-
element
-
compound
-
homogeneous
-
distillation
-
mass
Pregunta 7
Pregunta
[blank_start]chemical reaction[blank_end] - process in which substances are changed into different substances
Respuesta
-
chemical reaction
-
mass
-
compound
-
element
-
homogeneous
Pregunta 8
Pregunta
[blank_start]vapor[blank_end] - gaseous state of substance that is a liquid or solid at room temperature
Respuesta
-
vapor
-
product
-
phase
-
reactant
-
heterogeneous mixture
Pregunta 9
Pregunta
[blank_start]reactant[blank_end] - starting substance in a chemical reaction
Respuesta
-
reactant
-
product
-
phase
-
vapor
-
mixture
Pregunta 10
Pregunta
[blank_start]product[blank_end] - a substance formed in a chemical reaction
Respuesta
-
product
-
mixture
-
vapor
-
reactant
-
heterogeneous mixture
Pregunta 11
Pregunta
[blank_start]mixture[blank_end] - a physical blend of two or more components
Respuesta
-
mixture
-
vapor
-
heterogeneous mixture
-
product
-
reactant
-
phase
Pregunta 12
Pregunta
[blank_start]phase[blank_end] - part of a sample having uniform composition and properties
Respuesta
-
phase
-
mixture
-
reactant
-
product
-
vapor
Pregunta 13
Pregunta
[blank_start]heterogeneous mixture[blank_end] - not uniform in composition
Respuesta
-
heterogeneous mixture
-
mixture
-
product
-
phase
-
vapor
Pregunta 14
Pregunta
What do chemical symbols and formulas represent, respectively?
Respuesta
-
elements and ions
-
compounds and mixtures
-
elements and compounds
-
atoms and mixtures
Pregunta 15
Pregunta
Which of the following represents a compound?
Respuesta
-
H2O
-
H-3
-
H
-
O-16
Pregunta 16
Pregunta
Which state of matter expands when heated and is easy to compress?
Respuesta
-
gas
-
liquid only
-
solid only
-
both b and c
Pregunta 17
Pregunta
which of the following may have more than one phase?
Respuesta
-
a pure liquid
-
a heterogeneous mixture
-
a pure solid
-
a homogeneous mixture
Pregunta 18
Pregunta
The chemical symbol for iron is ___.
Respuesta
-
fe
-
Fe
-
FE
-
Ir
Pregunta 19
Pregunta
Which of the following is a homogeneous mixture?
Respuesta
-
oil in vinegar
-
pasta in water
-
muddy water
-
alcohol in water
Pregunta 20
Pregunta
In the chemical reaction in which sucrose is heated and decomposes to form carbon dioxide and water, which of the following is a reactant?
Respuesta
-
sucrose
-
heat
-
water
-
carbon dioxide
Pregunta 21
Pregunta
An example of an extensive property of matter is
Respuesta
-
hardness
-
temperature
-
mass
-
pressure
Pregunta 22
Pregunta
When an iron nail is ground into powder, its mass ___.
Respuesta
-
stays the same
-
decreases
-
increases
-
cannot be determined
Pregunta 23
Pregunta
When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place?
Respuesta
-
both a physical change and a chemical change
-
a chemical change
-
neither a physical change nor a chemical change
-
a physical change
Pregunta 24
Pregunta
The chemical formula of a compound indicates?
Respuesta
-
the source of the elements in the compound
-
the alchemy symbols for the elements in the compound
-
how elements are joined in the compound to form crystal
-
the relative proportions of the elements in the compound
Pregunta 25
Pregunta
Which of the following is a physical change?
Respuesta
-
rotting of food
-
corrosion
-
explosion
-
evaporation
Pregunta 26
Pregunta
Which of the following processes involves a change in physical properties?
Respuesta
-
burning
-
boiling
-
fermenting
-
rusting
Pregunta 27
Pregunta
Which of the following can be classified as a mixture?
Respuesta
-
pure gold
-
pure air
-
pure water
-
pure nitrogen
Pregunta 28
Pregunta
Which of the following is a physical property?
Respuesta
-
ability to rust
-
combustible
-
explosive
-
melting point
Pregunta 29
Pregunta
A chemical change occurs when a piece of wood
Respuesta
-
is painted
-
decays
-
is cut
-
splits
Pregunta 30
Pregunta
What must occur for a change to be a chemical reaction?
Respuesta
-
There must be a change in physical properties.
-
The change must involve a change in mass.
-
There must be a change in composition which changes the chemical properties.
-
The change must involve a change in volume.
Pregunta 31
Pregunta
What distinguished a substance from a mixture?
Respuesta
-
Samples of the same substances can have different intensive properties.
-
Substances are compounds, and mixtures are not.
-
Mixtures are groupings of elements, and compounds are not.
-
The composition of substances cannot vary, while the composition of mixtures can.
Pregunta 32
Pregunta
Which of the following is a homogeneous mixture?
Respuesta
-
beef stew
-
sand and water
-
salt water
-
soil
Pregunta 33
Pregunta
A substance that can be separated into two or more substances only by a chemical change is a(n) ___.
Respuesta
-
mixture
-
element
-
solution
-
compound
Pregunta 34
Pregunta
Which of the following is a physical property of a substance in the liquid state?
Respuesta
-
definite shape
-
definite volume
-
not easily compressed
-
indefinite
Pregunta 35
Pregunta
Which state off matter takes both the shape and volume of its container?
Respuesta
-
solid
-
liquid only
-
gas only
-
both b and c
Pregunta 36
Pregunta
Which of the following involves a chemical change?
Respuesta
-
mixing
-
decomposing
-
melting
-
grinding
Pregunta 37
Pregunta
Separating a solid from a liquid by evaporating the liquid is called ___.
Respuesta
-
filtration
-
distillation
-
condensation
-
solution
Pregunta 38
Pregunta
Which of the following is a chemical property?
Respuesta
-
freezing point
-
hardness
-
color
-
ability to react with oxygen
Pregunta 39
Pregunta
Which state of matter is characterized by having an indefinite shape, but a definite volume?
Respuesta
-
gas
-
liquid only
-
solid only
-
both b and c
Pregunta 40
Pregunta
What is one difference between a mixture and a compound?
Respuesta
-
A mixture must be uniform in composition.
-
A mixture can only be separated into its components by chemical means.
-
A compound consists of more than one phase.
-
A compound can only be separated into its components by chemical means.
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