Chemical Reactions

20 points

1.    Compare and contrast reactants and products.  (4 points)

2.    State the law of conservation of mass. (2 points)

3.    Concerning the following chemical equation:  (2 points)

        Pb(NO₃)₂ (aq) + 2 KI (aq) --> PbI₂ (cr) + 2KNO₃ (aq)    

        a.    What does "aq" mean?

        b.    Give an example of a coefficient.

4.    Compare and contrast a synthesis reaction and a decomposition reaction. (4 points)

5.    Compare and contrast an endothermic reaction and an exothermic reaction, and give an example of each.  (4 points)

6.    Compare and contrast a catalyst and an inhibitor, and give an example of each. (4 points)