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20 Cards in this Set
- Front
- Back
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Mass Number =
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(Number of Protons) + (Number of Neutrons)
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is a type of code that describes how many electrons are in each energy level of an atom and how the electrons are arranged within each energy level.
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An electron configuration table
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are positively charged particles found within atomic nuclei
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Protons
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are negatively charged particles that surround the atom's nucleus
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Electrons
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are uncharged particles found within atomic nuclei
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Neutrons
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The is the number located in the upper left corner. # of protons.
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atomic number
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is the number located on the bottom.
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atomic weight
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Number of Neutrons =
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Mass Number - Atomic Number
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Number of Electrons =
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Number of Protons = Atomic Number
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ALL THE ATOMS OF AN ____ CONTAIN THE SAME # OF PROTONS (HAVE THE SAME ATOMIC #)
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ELEMENT
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are any of the different types of atoms of the same chemical element, each having a different atomic mass (mass number).____of an element have nuclei with the same number of protons (the same atomic number) but different numbers of neutrons. Therefore, the same element have different mass numbers.
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Isotopes
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The attraction between molecules is an _______.
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intermolecular
force. |
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______ forces are much weaker than________ forces
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Intermolecular
intramolecular |
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What is the strongest of all intermolecular forces?
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Ion-Dipole forces
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_____ forces exist between neutral polar
molecules. |
Dipole-dipole
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The forces holding solids and liquids together are called
________. |
intermolecular forces.
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The covalent bond holding a molecule together is an
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intramolecular force.
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The attraction between molecules is an________.
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intermolecular
force. |
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Breaking intermolecular forces is always
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Endothermic
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Forming intermolecular forces is always
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Exothermic
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