Knowing the bonds
Help!
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| Compound | When 1 or more atoms are bonded together
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| Molecule | A compound that has covalent bonds
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| Formula Unit | A compound that has ionic bonds
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| Ionic Bonds | -There is a transfer of electrons
-Metal + Nonmetal (ex: NaCl)
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| Covalent Bonds | -Atoms share electrons
-Two NONmetals (H20)
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| Chemical Formula | Notation using symbols and numbers to represent the composition of a substance.
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| Molecular Formula | Shows the number and kinds of atoms actually present
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| Empirical Formula | Gives the simplest ratio between atoms.
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| Coefficients | Used to show the presence of multiple compounds
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| Formula Unit | Ionic, always REDUCE to empirical
ex: Na2Cl2 --> NaCl
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| Diatomic Molecules | elements that always exist as a molecule
(the magic 7)
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| Size/Radius | Atomic radius increases as you move from right to left through a period.
-Nuclear charge increases which draws in the outer electrons
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| Shielding | inner electrons block the nuclear charge toward the outer shell electrons.
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| Electronegativity | The atoms's ability to pull an electron towards itself when bonded.
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| Ionization Energy | The amount of energy required to pull an electron off.
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| Mono | 1
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| Di | 2
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| Tri | 3
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| Tetra | 4
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| Penta | 5
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| Hexa | 6
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| Hepta | 7
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| Octa | 8
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| Nona | 9
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| Deca | 10
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Created by:
annsonic
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