A&P Chapter 2 - Chemical Level
Terms
undefined, object
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- Molecule
- when 2 or more atoms share electrons
- Compound
- a substance that contains 2 or more different elements
- Ionic Bonds
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when opposite charges ions are attached to each other
ex: NaCl - Ions
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an atom that has gained or lost electrons & becomes (+) or (-) charged
ex: Na+, Cl- - Cations
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a + charged ion
ex: na+ - Anions
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a - charged ion
ex: cl- - Covalent Bonds
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when 2 or more atoms share electrons, much stronger that ionis bonds
ex: H2O - Nonpolar Covalent Bonds
- 2 atoms share electrons equally
- Polar Covalent Bonds
- 1 atom attracts the shared electron more, causes partial (+)& (-) ends
- Hydrogen Bonds
- surface tension, water forms polar bonds, H is attracted to neighboring atoms