Chemical potential energy

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Presentation transcript:

Chemical potential energy Day 2 3-22-11 Topic: Energy Types and Transformations Objective: Analyze examples of energy changing from one form to another within or between systems. Science Starter: The Burning Dorito Station: Sketch the object Action Result Energy Transformation Burning Dorito A dorito is exposed to a flame With PF 6.1 exercise Chemical potential energy To Heat energy The dorito smolders

Agenda Starter Brief Notes Practice Identifying Systems & Energy Transfer -shoulder partner -whole class

Energy Vocabulary: Potential Energy stored energy due to position or condition. Types of Potential Energy Gravitational Potential Energy- GPE or (Eg). Picture Elastic Potential Energy- EPE or (Eel). Chemical Potential Energy- CPE or (Ec). y A slinky / spring is stretched… and released… MORE Eg y LESS Eg

B. Kinetic Energy KE or (Ek) is energy of motion. C. Thermal Energy (Etherm) is energy stored in the motion of the molecules. D. Mechanical Energy ME or (Em) energy due to its motion (KE) and its stored energy of position (PE). Temperature Change Friction Friction Causes the ball to slow & stop

Analyzing a System’s ENERGY Define the SYSTEM (Object of Interest) Define the ENVIRONMENT Everything outside of the system Define the Process Process: the change in the system, from an initial state to some final state. A slinky / spring is stretched… And Released…

PF 6.1

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