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    Science: Chemistry Quiz
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The curved upper surface of a column of liquid is the ____. adhesion
A group of atoms held together by covalent bonds is a ____. atomic mass
The molecular attraction between dissimilar molecules is ____. atomic number
An ____ is a negatively charged subatomic particle. electron
One atom of the C-12 isotope has an ____ of 12.000 amu. mass number
An element's ____ is the number of its protons. meniscus
An element's ____ is the number of its protons plus neutrons. molecule
A ____ is a positively charged subatomic particle. proton

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