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In order to make observations, an observer must always use
the senses
matter
air
contains most of the atom's total mass.
the disolving of a sugar cube in a cup of coffee.
number of protons
The gas is carbon dioxide.
an inference
The nucleus is the part of the atom that
the senses
matter
air
contains most of the atom's total mass.
the disolving of a sugar cube in a cup of coffee.
number of protons
The gas is carbon dioxide.
an inference
All of the following are chemical changes, except
the senses
matter
air
contains most of the atom's total mass.
the disolving of a sugar cube in a cup of coffee.
number of protons
The gas is carbon dioxide.
an inference
Which material is a mixture?
the senses
matter
air
contains most of the atom's total mass.
the disolving of a sugar cube in a cup of coffee.
number of protons
The gas is carbon dioxide.
an inference
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?
the senses
matter
air
contains most of the atom's total mass.
the disolving of a sugar cube in a cup of coffee.
number of protons
The gas is carbon dioxide.
an inference
Any substance that has mass and takes up space is called
the senses
matter
air
contains most of the atom's total mass.
the disolving of a sugar cube in a cup of coffee.
number of protons
The gas is carbon dioxide.
an inference
An interpretation based on an observation is called
the senses
matter
air
contains most of the atom's total mass.
the disolving of a sugar cube in a cup of coffee.
number of protons
The gas is carbon dioxide.
an inference
The elements on the Periodic Table are arranged in the horizontal rows according to each successive element's greater
the senses
matter
air
contains most of the atom's total mass.
the disolving of a sugar cube in a cup of coffee.
number of protons
The gas is carbon dioxide.
an inference
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