Name:

Principles of Chemical Reactions Fill-in

  1. Atoms combine in _______________ proportions to form chemical ________________.
  2. The _______________ for the atoms in a _______________ are combined with the _______________ of atoms (as a subscript) in that compound to give a chemical _______________. Examples:
     
  3. Atoms with _______________ outer shells are in a _______________ condition.
  4. A filled shell often has 8 _______________ (an _______________), this stable condition is called the ____________ of Eight.
  5. The substances that undergo a chemical reaction are called the _______________. The substances created by the chemical reaction are the _______________ .
  6. The total ___________ of _______________ must equal the total __________ of _______________. This is called the Law of _______________________ of Mass.
  7. The _______ of chemical reactions, how fast they proceed, is _______________ by:
    • _______________ the temperature.
    • increasing the _______________ of reactants.
    • increasing the _______________ area of reactants.
    • adding a _______________. This is essential to life.
  8. Atoms can _______________ e- (_____________ bond) or ____________ e- (_______________ bond) to achieve a _______________ outer shell.
  9. The outer _______________ is also called the _______________ shell and the e- are called the _______________ electrons.
  10. A _____________ diagram is used to show just the ___________ shell electrons. The electrons are shown as dots surrounding the element chemical symbol. Below are the Lewis diagram representations for hydrogen, sodium, nitrogen, oxygen and chlorine.