I.  Properties of catalysts -- The ANSWERS

       A.  Most tend to affect the rate of only 1 reaction 

                                            (proper catalyst)

        (Ex. Hydrogen peroxide                    water                    +                 oxygen)

                        

1.      Catalysts are therefore said to be  ...    S P E C I F I C    (Not Atlantic!)

      This is a map of this "peaceful" ocean.  Pax is Latin for peace.  They were wrong!

2.      The substance changed in the REACTANT  (also known as   S U B S T R A T E)

        B.  Usually catalysts are NOT changed in the reaction     

            1.   If before a reaction, your catalyst (usually an enzyme) has the shape of the molecule
           pictured on the left, then in the box, sketch the general shape of the catalyst after the
           reaction is over.

                                                                                  Did you redraw the square
                                                                           on the edge of an oval"

                                           BEFORE                                 AFTER (same shape)

            2.   If before a reaction, you have 1 gram of catalyst, after the reaction, you should be able
          to collect how much of this same catalyst?   __ 1 gram again ___

            3.  A catalyst has the same  P R O P  E R T I E S  (including shape) and  same 
          A M O U N T    before and after the reaction.  A good catalyst is neither created nor
          destroyed as it regulates the rate of a chemical reaction.

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