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CHM115_SCB_Lecture3

# CHM115_SCB_Lecture3 - For next lectures In your textbook...

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For next lectures… In your textbook, read: Sections 23.1- 23.9, pp. 1108-1137 focusing on nuclear chemistry Lecture 4: Section 23.1-23.3 Lecture 5: Section 23.4-23.6 Lecture 6: Sections 23.7-23.9 Be prepared to answer questions about this reading.

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This Week OWL Homework – due TODAY at 6 pm Reading Assignment Lab: Check in, Safety, Course Review Dress Appropriately ChemX Survey now available Safety Quiz – do before lab
A Note About Learning Objectives Use them! Posted on Blackboard well before lectures These are what I want you to get from each lecture Test questions come from these

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Lecture 3: The “Power” Lecture or High School Review
Question #1 Which is a unit of temperature? a. ampere (A) b. gram (g) c. joule (J) d. kelvin (K) e. mole (mol) f. second (s)

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Units of Measure The joule is not a fundamental unit. Joule is the energy unit. 1 J = 1 (kg*m 2) /s 2
Question #2 Which is the largest unit of energy? a. J b. kJ c. mJ d. MJ e. nJ f. pJ

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Common Decimal Prefixes Used with SI Units
Potential and Kinetic Energy Energy is stored in molecules. As stored energy it is potential energy. Some molecules store more than others. When a fuel is burned, potential energy is converted to kinetic energy. The amount of kinetic energy you can get out depends on the amount of potential energy available Energy is neither created nor destroyed, it is only converted between forms – Law of Conservation of Energy

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Gummy Bear Demo Gummy bears have a lot of calories!

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Which has the greater kinetic energy? KE = ½ m v
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CHM115_SCB_Lecture3 - For next lectures In your textbook...

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