Chemistry

• Anything occupying space and having mass

  Matter
• A separating process that depends on differences in the volatility of the components

  Distillation
• How readily substances become gases

  Volatility
• Method of separation used when a mixture consists of a solid and a liquid

  Filtration
• Method of separation that employ a system with 2 phases: a mobile phase (liquid or gas) and a stationary phase (solid)


  Chromatography
• Either compounds (combinations of elements) or free elements

  Pure substances
• Substances that cannot be decomposed into simpler substances by chemical or physical means

  Elements
• Points of zero lateral displacement for a given wave

  Nodes
• Energy required to remove an electron from a gaseous atom or ion

  Ionization energy
• Energy change associated with the addition of an electron to a gaseous atom

  Electron affinity
• Energy required to break a bond

  Bond energy
• The ability of an atom in a molecule to attract shared electrons to itself

  Electronegativity