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Molecular Forces Intramolecular Forces Intermolecular Forces Ionic Bonds Covalent Bonds Dispersion Forces Dipole Forces Hydrogen Bonds
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Molecular Forces Intramolecular Forces Intermolecular Forces Ionic Bonds Covalent Bonds Dispersion Forces Hydrogen Bonds Dipole Forces
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Intermolecular Forces
Involve attractions between molecules Are weaker than intramolecular bonds Determine phase of matter at a given temperature; i.e. solid, liquid or gas Mixability
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Types of Intermolecular Forces
Dispersion Forces - weakest Dipole Interactions – so-so Hydrogen Bonds - strongest
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Dispersion Weakest intermolecular force
Caused by the motion of electrons More electrons per molecule, more attraction between molecules; i.e. halogens
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Intermolecular Forces - Dispersion
e.g. bromine is a liquid, iodine is a solid at STP
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Intermolecular Forces – Dipole Interactions
caused by attraction between polar molecules defines the behavior of many biological compounds “sticky” or “slippery”
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Intermolecular Forces – Dipole Interactions
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Dipole Interactions
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Intermolecular Forces – Hydrogen Bonds
Strongest of the intermolecular forces Only molecules with hydrogen in them BIG role in living organisms!!!
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Hydrogen Bonds
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Amazing Water Properties
Surface Tension Capillary Action Density Differences Solubility
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Water Properties – Surface Tension
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Water Properties- Capillary Action
425 ft Paper Towels and Redwood Trees
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Water Properties - Density
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Water Properties - Solubility
Life’s necessity
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Molecular Forces Intramolecular Forces Intermolecular Forces Ionic Bonds Covalent Bonds Dispersion Forces Dipole Forces Hydrogen Bonds
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