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17 Cards in this Set
- Front
- Back
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What are the four most common elements in living things?
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Hydrogen, Oxygen, Carbon and Nitrogen
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Define atom
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Smallest functional unit of matter that forms all chemical substances and organisms
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Define atomic mass
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Protons + Neutrons
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Define atomic number
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Number of protons
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Define isotopes
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Same number of protons, different number of neutrons
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Name of shell that contains 2 electrons
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K-shell
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Name of shell that contains 8 electrons
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L-shell
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Define covalent bonds
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Sharing electrons to fill valence shell
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Define electronegative
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Measure of an atoms ability to attract electrons in a bond with another atom
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What's the difference between a covalent bond and a electronegative bond?
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Electronegative covalent bonds are covalent bonds where one atom has a greater pull on the shared electrons
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What's the strongest bond in water?
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Covalent
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What's the weakest bond in water?
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Hydrogen
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Define Ionic bond
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Cation bonded to an anion
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Define ion
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gaining or losing an electron
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Define anion
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Ions with a negative charge (gain an electron)
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Define cation
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Ions with a positive charge (lose an electron)
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Define hydrogen bond
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Hydrogen atom bonds to electronegative atom
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