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Page 30
... Covalent bonds . A covalent bond forms when two atoms share a pair of valence electrons . ( Molecular formulas are shown at the left , structural formulas at the right . ) ( a ) If two unattached hydrogen atoms meet , they will form a ...
... Covalent bonds . A covalent bond forms when two atoms share a pair of valence electrons . ( Molecular formulas are shown at the left , structural formulas at the right . ) ( a ) If two unattached hydrogen atoms meet , they will form a ...
Page 31
... Covalent Bonds The attraction of an atom for the electrons of a covalent bond is called electronegativity . The more electronegative an atom , the more strongly it pulls shared electrons toward itself . In a covalent bond between two ...
... Covalent Bonds The attraction of an atom for the electrons of a covalent bond is called electronegativity . The more electronegative an atom , the more strongly it pulls shared electrons toward itself . In a covalent bond between two ...
Page 32
... covalent bonding and ionic bonding . A nonpolar covalent bond and an ionic bond are opposite extremes in a range of situa- tions where atoms share electrons . In the middle zone is the polar covalent bond , in which electrons are shared ...
... covalent bonding and ionic bonding . A nonpolar covalent bond and an ionic bond are opposite extremes in a range of situa- tions where atoms share electrons . In the middle zone is the polar covalent bond , in which electrons are shared ...
Contents
Themes in the Study of Life | 1 |
UNIT ONE The Chemistry of Life | 15 |
Atoms Molecules and Chemical Bonds | 20 |
Copyright | |
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active adaptive allele amino acids animals atoms bacteria base become biology body bonds called carbon cause cells cellular Chapter chemical chromosome Class common complex concentration consists containing cycle cytoplasm determine disease diversity division early electron electron transport chain energy environment enzymes eukaryotic evolution evolutionary evolved example fertilization Figure flowers fossil function fungi gametophyte genes genetic glucose grow growth human hydrogen important increase individuals inherited ions known leaves light living located major material mechanism membrane molecular molecules move natural nucleus occurs organic origin oxygen pair parent plants population probably produce prokaryotes protein reaction regions relatively reproduction result ribosomes root seed selection separate sequence sexual reproduction shape single soil solution specialized species step structure sugar surface synthesis tion tissue transfer transport unit University usually walls