Week 1– Chemical Bonds Flashcards
Bond length
Point of minimal energy
Covalent bond
Shared electrons
Electronegativity
Ability of atom to attract shared electrons
Polarity
Separation of charges
Life’s most abundant atoms
Hydrogen Carbon Nitrogen Oxygen
Of covalent bonds hydrogen
1
Of covalent bonds oxygen
2
Of covalent bonds oxygen
2
Of covalent bonds nitrogen
3
Of covalent bonds carbon
4
Low electronegativity atoms
H, C
High electronegativity atoms
N, O
Hydrogen “bond”
Partially positive hydrogen is attracted to partially charged negative atom (O or N)
Polarity of hydrophilic molecules?
Polar
Polarity of hydrophobic molecules?
Nonpolar
Intermolecular interactions in water from highest to lowest strength
Covalent bond, ionic bond, hydrogen bond, Van Der Waals forces