DonExodus

Dentist in Virgin Islands
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Jul 6, 2006
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1) An alloy is a) a mixture of 2+ elements with metallic properties, or b) 1 element with metallic properties.

I chose A...., book said B......

2) Catalysts speed up chemical rxns by:
a) Decreasing the activation NRG,
b) Increasing the free energy of the system....

I chose A, answer B... thoughts?
 

artmed12

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an alloy is a combination, either in solution or compound, of two or more elements, at least one of which is a metal, and where the resulting material has metallic properties
 

artmed12

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last post was from wikipedia..

i just read about gibbs free energy today in kaplan and there was a sentence that specified that the Rate of a RXN can be sped/slowed by altering Energy of Activation, NOT Gibbs Free Energy
 
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