Blancing and Word Equations

*Phase symbols are subscripts that indicate the phase of the chemical.
ex. Al(s), H2O(l), H2(g), AgNO3(aq)

• (s) -----> Solid

• (l) ------> Liquid

• (g)-----> Gas

• (aq)----> Aqueous 

*in chem 11 a solution means something is dissolved in water therefore it is aqueous

*Diatomic Molecules

• H2   Hydrogen                                 *Polyatomic Molecules*
• O2   Oxygen                                           - P4 Phosphorus
• F2    Fluorine                                          - S8 Sulphur
• Br2  Bromine
• I2      Iodine
• N2    Nitrogen
• Cl2   Chlorine

Example of a Word Equation to a Balanced Equation

Word Equation : "a solution of barium phosphate is mixed with aqueous sodium sulphate to yield solid barium sulphate and aqueous sodium phosphate"


Balanced Equation: Ba3(PO4)2(aq) + 3Na2SO4(aq) ---> 3BaSO4(s) + 2Na3PO4(aq)

-JanCarlo Paysan