Editing 2008-2009 Review For Energy And Measurement II Test

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<center>Review for Energy and Labskills and Measurement II</center> 
 
Answer the following equation showing all work 
 
1. In the density lab you measured the volume of an irregular shaped object by water displacement. If the initial volume of the water was 24.5ml and the final volume was 38.1ml, what is the volume of the object? If the mass of this object was 2.32E-2mg, what is the density in g/L? 
 
To show work here, you must show addition calculation in step 2 (what I know step) before set-up main calculation.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2. A substance occupies 2.243E-2 (2.243X10-2) liters and has a density of 0.053g/cm3. What is the mass of this substance in g? 
 
 
 
 
 
 
 
 
 
 
 
<center>Review for Energy and Labskills and Measurement II Page 2</center> 
 
3. Principal Steven was seen running on the high school track. If he ran 56.4mi/hr, how fast is he in m/s? As he finished, he said his "school spirit" made him do it. 
 
 
 
 
 
 
 
 
 
 
 
 
Answer the following question in a clear and concise manner using proper English. 
 
1. Explain the three different modes of heat flowing including examples from your house. 
 
 
 
 
 
2. In space below, define temperature and explain how it is not the same as heat. The two units of energy are __________ and ________. 
The conversion factor is __________________________. 
 
 
 
 
 
3. What is the difference between the absolute and relative temperature scale. Give an example of each (look in book). 
 
 
 
 
 
4. Explain what the three laws of Thermodynamic mean. 
 
 
 
 
 
 
 
 
 
 
<center>Review for Energy and Labskills and Measurement II Page 3</center> 
 
 
5. Explain the Kinetic Molecular Theory and how it applies to temperature and 2nd Law of Thermodynamics (what happens to particles as energy moves). 
 
 
 
 
 
 
 
 
 
 
6. Explain the difference between an exothermic and endothermic reactions including activation energy and the difference between the <nowiki>PE</nowiki>R and <nowiki>PE</nowiki>P. (draw the two PE diagram and label appropriately.) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
7. Density is the mathematical relationship between ___________________ and ______________________ . As stated by Mr. <nowiki>McLeod</nowiki>, it really shows you what ______________________________ about the particles. 
 
 
If you heat water up, its density will _______________, which is caused by a ___________________________________ with respect to the particles. 
 
 
<center>Review for Energy and Labskills and Measurement II Page 4</center> 
 
 
For a substance to "float" in water, what must the density be ___________________________________ (give a math answer & actual density of water)?
 
Why is water and ice an exception to the rules of how densities of most solids and their liquid compare. Please example to the depth of particles. 
 
 
 
 
If I have freshwater and saltwater (an aqueous solution of sodium chloride), explain the difference in the two densities and why this is (again to the depth of particles). 
 
 
 
 
 
8. For Coloumbic force (CF), write the equation and state variables, and state the two part of this law.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Answer: 1) 1.71E-3 g/L 2) 1.2g 3)25.2m/s

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