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11 Cards in this Set
- Front
- Back
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Atoms
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The building blocks of matter.
Made up of protons, electrons, and neutrons |
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Element
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A pure substance - all the atoms have the same atomic number, or number of protons
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Nucleus
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The center of an atom, it contains the protons and neutrons
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Proton
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Particles that have a positive (+) charge
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Neutron
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Particles that do not have a charge and are neutral
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Electron
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Particles that have a negative (-) charge
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Strong Force
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This holds the nucleus together, keeping the protons and neutrons together
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Atomic Number
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The number of protons and electrons found in an element
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Atomic Mass
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The mass of an atom
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Shells
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Energy levels where the electrons are found
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Valence Electron
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The electrons in the outer most shell, determines bonding
He with 2 valence electrons |
