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Difference (from prior major revision)
(author diff)
Added: 1a2
Revised for 2020-2021 Honors Students
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Changed: 32c33
(2020-2021 Honors student DO NOT do rest of questions
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(2020-2021 Honors student DO NOT do rest of questions below)
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Part I: Non-math (multiple choice/fill in blank, short answer) section:
Revised for 2020-2021 Honors Students
1. Define Thermodynamics.
2. What does the 1st Law of Thermodynamic state/mean say about Energy?
3a. What aspect of Energy does 2nd Law of Thermodynamics deal with?
3b. State the 2nd Law of Thermodynamics.
4a. What aspect of Energy does the 3rd Law of Thermodynamics deal with?
4b. What is Absolute zero and what two conditions do you need for this condition.
5. Define Temperature.
6. Temperature and Heat (is a form of energy) are not same. What is the difference between them?
7. State the two most common units of Energy (BTU is not one of them) and the conversion factor between them.
(Hint: Look at the two specific heat capacity of water)
8. What is the difference between a Relative Temperature scale (i.e.°C or °F ) and an Absolute Temperature scale (K). What part of the unit shows this?
(2020-2021 Honors student DO NOT do rest of questions below)
9a. What is happening with the system concerning energy when you:
i. Exothermic process/reaction:
ii. Endothermic process/reaction.
9b. For an Exothermic process/reaction: is Potential Energy of Reactants (Pr) Greater than, Less than or Equal to Potential Energy of Reactants (Pp). Circle correct phrase.
Is the sign for ΔHrxn (called Heat of Reaction) for an Exothermic reaction Negative or Positive? Circle correct phrase.
9c. For an Endothermic process/reaction: is Potential Energy of Reactants (Pr) Greater than, Less than or Equal to Potential Energy of Reactants (Pp). Circle correct phrase.
Is the sign for ΔHrxn (called Heat of Reaction) for an Endothermic reaction Negative or Positive? Circle correct phrase.
10a. On top of back of this page, draw a Potential Energy diagram for an Exothermic reaction. Then on bottom of back of this page, do the same for an Endothermic reaction. (Hint: It will help in drawing diagrams if you answer Q11 below. It is part of diagram)
11a. What do you call the collision when base particles do rearrange (a chemical reaction)?
11b. What are the two requirement for this collision to occur ?
12. When a substance goes thru its phases, from solid through gas, is that an endothermic or exothermic reaction? Explain
13. In the heat/energy equation (when the substance states in one phase, no phase change), define the following (including statin units)
a. First write the mathematical equation here, __________________________
b. ΔHrxn:
c. m:
d. ΔT:
write down its equation here: _______________________
e. c (i.e. cH2O)
Part II : Solve the following problems showing all work as shown in your notes).