Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

37 Cards in this Set

  • Front
  • Back
the kintetic molecular theory
based on the idea that partciles of matter are always in motion
ideal gas
a hypothetical gas that perfectly fits all the assumptions of kinetic-molecular theory
elastic collision
a collision in which there is no net loss of total kintetic energy
spontenous mixing of the particles of two susbtances caused by their random motion
a substance that can flow and therefore take the shape of its container
the process by which gas particles pass through a tiny opening
real gas
a gas that does not behave completely according to the assumptions of the kinetic-molecular theory
surface tension
a force that tends to pull adjacent parts of a liquids surface together, thereby decreasing area to the smallest possible size
Capillary action
the attraction of a liquid to the surface of a solid
the process by which a liquid or solid changes to a gas
the process by which particles escape from the surface of a non-boiling liquid and enter the gas state
the physical change of a liquid to a solid by removal of energy as heat
crystalline solids
solids that consist of crystals
a substance in which the particles are arranged in an orderly, geometric, repeating pattern
amorphous solid
a solid in which the particles are arranged randomly
the physical change of a solid to a liquid by the addition of energy as heat
melting point
the temperature at which a solid becomes a liquid
supercooled liquids
substances that retain certain liquid properties even at temperatures at which they appear to be solid
crystal structure
the total three-dimensional arrangement of particles
unit cell
the smallest portion of a crystal lattice
any part of a system that has uniform compositon and properties
the process by which a gas changes to a liquid
a dynamic condition in which two opposing changes occur at equal rates in a closed system
equilibrium vapor pressure
the pressure exerted by a vapor in equilibrium with its corresponding liquid at a given temperature
volitile liquids
liquids that evaporate readily
the conversion of a liquid to a vapor within the liquid as well as at its surface
the boiling point
the temperature at which the equilibrium vapor pressure of the liquid equals the atmospheric pressure
molar enthalpy of vaporization
the amount of energy as heat that is needed to vaporize on mole of liquid at the liquids boiling point at constant pressure
the physical change of a liquid to a solid
freezing point
the temperature at which the solid and liquid are in equilibrium of 1atm
molar enthalpy of fusion
the amount of energy as heat required to melt one mole of solid at the solids melting point
the change of state from a solid directly to a gas
the change of state from a gas directly to a solid
phase diagram
a graph of pressure versus temperature the shows the conditions under which the phases of a substance exist
triple point
indicates the temperature and pressure conditions at which the solid liquid and vapor of a the substance can coexist at equilibrium
critical point
indicates the critical temperature and critical pressure
critical pressure
the lowest pressure at which the substance can exist as a liquid at the critical temperature