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GSU - BIOL 2107 - biology, week 2 - Class Notes

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GSU - BIOL 2107 - biology, week 2 - Class Notes

School: Georgia Southern University
Department: Engineering
Course: Principles of Biology I
Professor: Lace Svec
Term: Summer 2016
Tags:
Name: biology, week 2
Description: goes over the specifics of a atom and the impact of electrons
Uploaded: 08/23/2016
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background image PRINCIPLES OF BIOLOGY I
WEEK 2
Vocabulary: 1. Electronegativity: the ability of an atom to pull electrons to it’s nucleus.
2. Covalent bond: when two atoms share one or more valence electrons; often two 
nonmetals. 3. Polar covalent bond: a covalent bond (above) between atoms that differ in  electronegativity (above); the shared electrons have higher attraction to the atom with the 
higher electronegativity, causing partial charges to occur.
4. Nonpolar covalent bond: a covalent bond where electrons are shared equally between two atoms of similar electronegativity; allows the atoms to acquire a neutral charge. 5. Ionic bond: the attraction between two oppositely charged atoms; often a metal and  nonmetal. 6. Hydrogen bond: weak bond;  + hydrogen atom of a polar bond is attracted to  ­ atom of  a polar covalent bond. 7. Ion: when an atom(s) gains or loses on or more electrons, acquiring a charge.
8. Hydrophilic: liking water; being attracted to water.
9. Hydrophobic: fearing water; being repelled from water.
10. Functional group: a specific configuration of atoms commonly attached the the carbon 
skeletons of organic molecules that are involved in chemical reactions. Notes:  Almost all life consists of: o Carbohydrates o Nucleic acid o Lipids o Protein Hydrogen atom:                            _
 
                                               _    Electrons float around a  predetermined shape Oppositely charged  objects attract; like  Nucleu s (p+, n ) ++  Electron cloud (-)

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School: Georgia Southern University
Department: Engineering
Course: Principles of Biology I
Professor: Lace Svec
Term: Summer 2016
Tags:
Name: biology, week 2
Description: goes over the specifics of a atom and the impact of electrons
Uploaded: 08/23/2016
2 Pages 7 Views 5 Unlocks
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