Genchem2

Temperature

Heating and cooling can change the kinetic energy of the particles in a substance, altering their phases significantly.

Pressure

Increasing the pressure on a substance forces the molecules closer together, powering the strength of the intermolecular forces.

Intermolecular forces

Attractive forces between partcles.

Are distinctly different from the bonds that occur within the particles.

Dipole-Dipole Forces (COVALENT BOND)

Occuring between the oppositely charged poles of polar molecules

Ion-Dipole forces

Occuring between an ion and a polar molecule

London dispersion forces (Polar Covalent Bonds)

Proposed by Fritz london, A weak intermolecular forces comes from the interactive forces of instantaneous forces.

Van Der Waals Forces

Named after Johaness Diderik Van Der waals, Occurs between two non polar substances and are collectively known for being weaker than chemical bonds.

Hydrogen Bonds

Strongest intermolecular forces, Contains oxygen, nitrogen, or fluorine that are covalently bonded to hydrogen atom

Surface tension

Cohesive forces between liquid molecules are responsible for the phenomenon known _____

Cohesion

Water is attracted to it self

Adhesion

Watwr is attracted to other things

Viscosity

Describes a fluid resistance to flow

Capillarity

Rise or depression of a liquid to a small passage.

Vapor Pressure

Pressure exerted by a Vapor in thermodynamic equilibrium with its condensed phases at a given temperature in a closed system.

Normal Boiling Point

Also known as atmospheric pressure boiling point.

A temperature at which the vapor pressures equal the surrounding atmospheric pressure

Molar heat of Vaporization

Energy required to transform a given quantity of substance from a liquid into a gas at a given pressure.