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Review for Energy and Labskills and Measurement II
Answer the following equation showing all work
1. In the density lab you measurement 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/cm3? (Remember 1ml = 1 cm3
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 (2.24X10-2) liters and has a density of 0.053g/cm3. What is the mass of this substance in g?
Review for Energy and Labskills and Measurement II Page 2
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. Define temperature and explain how it is not the same as heat.
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.
Review for Energy and Labskills and Measurement II Page 3
5. Explain the Kinetic Molecular Theory and how it applies to temperature and 2nd Law of Thermodynamics.
6. Explain the difference between an exothermic and endothermic reactions including activation energy and the difference between the PER and PEP. (graph a PE diagram and label appropriately.)
Answer: 1) 25.0degC 2) 1.2g 3)25.2m/s