Ch3 Covalent Substances

What is VSEPR theory?

that negatively charged electron groups repel each other, so they are arranged as far away from each other as possible

Define Polar

bonds with an uneven distribution of charge

Define Non-polar

bonds with an even distribution of charge

Define Dipole

the separation of positive and negative charges in a molecule

Define Covalent Bond

the bond formed when electrons are shared between two nuclei

Define Intramolecular force

a force that holds the atoms together within a molecule

Define Intermolecular force

electrostatic force between molecules

Define Dispersion Force

forces that exist between all molecules and are caused by temporary dipoles

Define Dipole-dipole attraction

intermolecular forces that occur between polar molecules where the positively charged end of a molecule is attracted to the negatively charged end of another molecule

Define Hydrogen Bonding

a type of dipole dipole force where a hydrogen atom is covalently bonded to a highly electronegative atom such as oxygen, nitrogen or fluorine