Which state of matter is characterized by having a definite shape and a definite volume?
gas
liquid only
solid only
both b and c
❌ - a process in which a liquid is boiled to produce a vapor that is condensed into a liquid
❌ - amount of matter an object contains
❌ - composed of two or more substances chemically combined in a fixed proportion
❌ - describes mixture with a uniform composition
❌ - substance that cannot be changed into simpler substances by chemical means
❌ - process in which substances are changed into different substances
❌ - gaseous state of substance that is a liquid or solid at room temperature
❌ - starting substance in a chemical reaction
❌ - a substance formed in a chemical reaction
❌ - a physical blend of two or more components
❌ - part of a sample having uniform composition and properties
❌ - not uniform in composition
What do chemical symbols and formulas represent, respectively?
elements and ions
compounds and mixtures
elements and compounds
atoms and mixtures
Which of the following represents a compound?
H2O
H-3
H
O-16
Which state of matter expands when heated and is easy to compress?
which of the following may have more than one phase?
a pure liquid
a heterogeneous mixture
a pure solid
a homogeneous mixture
The chemical symbol for iron is ___.
fe
Fe
FE
Ir
Which of the following is a homogeneous mixture?
oil in vinegar
pasta in water
muddy water
alcohol in water
In the chemical reaction in which sucrose is heated and decomposes to form carbon dioxide and water, which of the following is a reactant?
sucrose
heat
water
carbon dioxide
An example of an extensive property of matter is
hardness
temperature
mass
pressure
When an iron nail is ground into powder, its mass ___.
stays the same
decreases
increases
cannot be determined
When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place?
both a physical change and a chemical change
a chemical change
neither a physical change nor a chemical change
a physical change
The chemical formula of a compound indicates?
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
Which of the following is a physical change?
rotting of food
corrosion
explosion
evaporation
Which of the following processes involves a change in physical properties?
burning
boiling
fermenting
rusting
Which of the following can be classified as a mixture?
pure gold
pure air
pure water
pure nitrogen
Which of the following is a physical property?
ability to rust
combustible
explosive
melting point
A chemical change occurs when a piece of wood
is painted
decays
is cut
splits
What must occur for a change to be a chemical reaction?
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.
What distinguished a substance from a mixture?
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.
beef stew
sand and water
salt water
soil
A substance that can be separated into two or more substances only by a chemical change is a(n) ___.
mixture
element
solution
compound
Which of the following is a physical property of a substance in the liquid state?
definite shape
definite volume
not easily compressed
indefinite
Which state off matter takes both the shape and volume of its container?
solid
gas only
Which of the following involves a chemical change?
mixing
decomposing
melting
grinding
Separating a solid from a liquid by evaporating the liquid is called ___.
filtration
distillation
condensation
Which of the following is a chemical property?
freezing point
color
ability to react with oxygen
Which state of matter is characterized by having an indefinite shape, but a definite volume?
What is one difference between a mixture and a compound?
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.
