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A scientist knows that a pure substance has six protons in the nucleus of each of its atoms. Which of the following can the scientist conclude?
volume
gas above boiling water
changes into another substance.
twenty kilograms of cement
electrons and a lot of empty space
substance can be identified as a specific element.
The air mass will be hot and dry.
liquid
When a substances particles are moderately spread apart and can slide past each other, what state of matter is the substance.
volume
gas above boiling water
changes into another substance.
twenty kilograms of cement
electrons and a lot of empty space
substance can be identified as a specific element.
The air mass will be hot and dry.
liquid
In the electron cloud model of the atom, what does the electron cloud contain?
volume
gas above boiling water
changes into another substance.
twenty kilograms of cement
electrons and a lot of empty space
substance can be identified as a specific element.
The air mass will be hot and dry.
liquid
The amount of space an object takes up is its
volume
gas above boiling water
changes into another substance.
twenty kilograms of cement
electrons and a lot of empty space
substance can be identified as a specific element.
The air mass will be hot and dry.
liquid
If an air mass forms over a desert in the southern United States, what will its temperature and moisture be like?
volume
gas above boiling water
changes into another substance.
twenty kilograms of cement
electrons and a lot of empty space
substance can be identified as a specific element.
The air mass will be hot and dry.
liquid
A chemical change differs from a physical change because in a chemical change a substance
volume
gas above boiling water
changes into another substance.
twenty kilograms of cement
electrons and a lot of empty space
substance can be identified as a specific element.
The air mass will be hot and dry.
liquid
Which object has the greatest density?
volume
gas above boiling water
changes into another substance.
twenty kilograms of cement
electrons and a lot of empty space
substance can be identified as a specific element.
The air mass will be hot and dry.
liquid
Which choice below best describes water vapor?
volume
gas above boiling water
changes into another substance.
twenty kilograms of cement
electrons and a lot of empty space
substance can be identified as a specific element.
The air mass will be hot and dry.
liquid
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