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Showing revision 2
Part I : Answer the following showing all work and/or in a clear and concise manner.
1. What is the difference between temperature and heat?
2. What is the definition of activation energy (Eac)?
3. Potential energy of the reactant (PEr) is _________ compared to the potential energy of the product (PEp).in an Exothermic rxn.
4. ___________________ is the average kinetic energy of all the particles in a substance.
5. State the two parts to "our" definition of the 2nd Law of Thermodynamics.
6. Absolute zero is the condition where __________________________. The condition of absolute zero is _________________ and _________________.
7. Entropy is the measurement of _______________________________
8. If a system (for example water) has a delta H that is "-", the system (i.e. water) would be releasing or absorbing energy/heat? Circle correct answer.
9. What is a spontaneous reaction in Thermo? What thermodynamic property deals with it (it needs to be negative for the reaction to be spontaneous.)
10. What two "ways" can a reaction stop (i.e. no more product is made)?
11. deltaG, Gibbs Free Energy change is composed of two other Thermodynamic properties. What are these properties.
12.Can spontaneous reactions be endothermic reaction also, yes or no? Explain.
13. How does the concept of Entropy affect or explain one or more of the conditions for absolute zero?
14a. Explain the difference between a Relative temperature scale (i.e. Celsius) and Absolute temperature scale (i.e. Kelvin).
14b. Someone stated that "energy was lost in the chemical reaction". State if you agree or disagree with that statement. Justify your answer using your knowledge of Thermo.
14c. What type of energies compose Enthalpy?