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level: Intermolecular forces

Questions and Answers List

level questions: Intermolecular forces

QuestionAnswer
IMF definitionweak interactions between dipoles of a different molecules
types of IMFInduced dipole-dipole (LONDON) permanent dipole-dipole Hydrogen bonding
What are IMF responsible formelting and boiling ptts and density
London forces...... Electrons move causing uneven distribution ... a tempory instantaneous dipole is set up in one molecule... induces a temp dipole in adjacent molecule hence the attraction
Permanent dipole-dipole interactions-asymmetrical -polar -forever
Simple Molecular substance issmall units containing a definte number of atoms
Properties of simple MS-low melting and boiling point due to weak intermolecular forces -covalent bonds do not break -soluble in non polar soluvents - hexane -non conductors of electricity - fixed p and no charged carriers
Why don't Simple MS dissolve in waterlittle interaction between the molecules in the lattice and the polar solvent molecules
Hydrogen bondingThe lone pair on the electronegative atom on one molecule and the electron deficient hydrogen on an adjacent molecule
Hydrogen bonding has the strongest imf ?yes