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Chapter 17: section 1 & 2 pre-reading

Short Answer
 

 1. 

A reaction that is releasing energy to the surroundings is considered _________
 

 2. 

What is a calorimeter?
 

 3. 

If a hot block is placed in cool water _______ will transfer from the block to the water until __________________?
 

 4. 

If you add a specific amount of energy to water and it raises 2 degrees but if that same amount of energy is added to ice it raises 4 degrees.  Why is it that the same amount of energy will raise ice up 4 degrees but liquid water only 2 degrees.
 

 5. 

A paper bowl holding water is being heated with a Bunsen burner.  The energy of the water only reaches _______ and the paper does not burn.  Where does the energy go and what is this process called?
 

 6. 

A thermochemical reaction is very similar to a normal balanced equation.  Except?
 

 7. 

2H2(g) + O2(g)  => 2H2O  +483.6 kJ

a.  Is the reaction given endothermic or exothermic?
b.  If 4 moles of hydrogen gas is consumed how many kJ of energy are consumed/released?
 

 8. 

If a reaction proceeds vigorously to products with out hesitation, what can you say about the products?
 

 9. 

When burning an organic compound the products are always?
 

 10. 

What is Hess’s law and what can you do with it?
 

 11. 

What is one naturally occurring endothermic process?
 

 12. 

What is entropy?
 

 13. 

What is Free Energy?
 

 14. 

If a reaction is creating order what sign and symbol of the entropy?
 

 15. 

Explain how one might calculate the temperature a reaction become spontaneous.
 



 
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