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In which phase of matter are the molecules of a substance farthest apart from each other?
air
contains most of the atom's total mass.
matter
gas
the senses
The gas is carbon dioxide.
an inference
the disolving of a sugar cube in a cup of coffee.
The nucleus is the part of the atom that
air
contains most of the atom's total mass.
matter
gas
the senses
The gas is carbon dioxide.
an inference
the disolving of a sugar cube in a cup of coffee.
All of the following are chemical changes, except
air
contains most of the atom's total mass.
matter
gas
the senses
The gas is carbon dioxide.
an inference
the disolving of a sugar cube in a cup of coffee.
An interpretation based on an observation is called
air
contains most of the atom's total mass.
matter
gas
the senses
The gas is carbon dioxide.
an inference
the disolving of a sugar cube in a cup of coffee.
In order to make observations, an observer must always use
air
contains most of the atom's total mass.
matter
gas
the senses
The gas is carbon dioxide.
an inference
the disolving of a sugar cube in a cup of coffee.
Which material is a mixture?
air
contains most of the atom's total mass.
matter
gas
the senses
The gas is carbon dioxide.
an inference
the disolving of a sugar cube in a cup of coffee.
A student investigated the physical and chemical properties if an unknown gas and then identified the gas. Which statement represents a conclusion rather than an experimental observation?
air
contains most of the atom's total mass.
matter
gas
the senses
The gas is carbon dioxide.
an inference
the disolving of a sugar cube in a cup of coffee.
Any substance that has mass and takes up space is called
air
contains most of the atom's total mass.
matter
gas
the senses
The gas is carbon dioxide.
an inference
the disolving of a sugar cube in a cup of coffee.
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