1. Catalyst Briefly describe potential energy. What is its formula? Briefly describe kinetic energy. What is its formula? Briefly describe conservation of energy. What is an example where you would see it happening?

2. At which point in energy transformation will the system run out of energy? (Will there be enough energy after “said” events?)

3. Entropy is 1.The measure of disorder in a system 2.The amount of non-usable energy in a system Write the following (Cornell notes style) into your INB

4. What is a system? A system is any object or set of objects going through a reaction

5. Law of Entropy states that the entropy (disorder) in a system will always increase

6. Entropy = the measure of disorder in a system Low Entropy = Organized High Entropy = Disorder, Disorganized

7. Entropy = the measure of disorder in a system Low Entropy = Organized High Entropy = Disorder, Disorganized

8. Entropy = the measure of disorder in a system Low Entropy = Organized High Entropy = Disorder, Disorganized On your left-side (processing) page, draw the example (the two boxes) and write notes/captions

9. What does the Law of Entropy state? Law of entropy: in any reaction, _______________________ What does that mean?

10. What does the Law of Entropy state? Law of entropy: in any reaction, entropy will always increase What does that mean? Some energy will always transform into a non-usable form

11. What’s happening to the energy? Potential Energy Kinetic Energy

12. What’s happening to the energy? Energy is being transformed between PE and KE. However, becoming less with each bounce. Where is the energy going: what other forms of energy are part of this system? Potential Energy Kinetic Energy

13. What’s happening to the energy? The “lost” PE was transformed to non-usable energies: sound and thermal. Potential Energy Kinetic Energy Sound Energy Thermal Energy

14. What does the Law of Entropy state? Law of entropy: in any reaction, entropy will always increase What does that mean? Some energy will always transform into a non-usable form

15. Re-usable energy: forms of potential and kinetic energy that can be re-used and transformed Non-usable energy: energy that is lost to the universe

16. Law of entropy: in any reaction, entropy will always increase, meaning some energy will always transform into a non-usable form Potential Energy ▫Chemical energy ▫Gas for motor, batteries ▫Food ▫Nuclear ▫Gravitational potential energy ▫Elastic potential energy Kinetic Energy ▫Mechanical energy ▫Electromagnetic (solar, light, radiant) ▫Electrical energy ▫Sound ▫Thermal (heat) Thermal energy (movement of molecules) = KE ▫ Forms of Energy

17. Energy spontaneously disperses from being localized to becoming spread out if it is not hindered from doing so. Example: Air in a high-pressure tire shoots out from even a small hole in its side to the lower pressure atmosphere. A hot pan contains lots of thermal energy. Apply the Law of Entropy and explain how it cools down. http://entropysite.oxy.edu/students_approach.html

18. Examples of Entropy (copy the following to practice being able to draw the flow of energy) Energy Bomb Exploding Energy InputOutput UsableNon-usable chemical Kinetic Thermal (heat) Sound (explosion) Electro- magnetic (light)

19. Examples of Entropy Energy Watching TV Energy InputOutput UsableNon-usable Electrical (from the outlet) Electromagnetic (light) Sound Thermal (heat)

20. Examples of Entropy Energy Car Driving Energy InputOutput UsableNon-usable Chemical (from the gas & battery) Kinetic Thermal (heat from friction: tires, engine) Sound (tires, engine) Electromag. (head lights)

21. REVIEW: SSP ½ sheet 1.The law of entropy states that energy tends to become _______. (useable? or unusable?) 2.In a system, is useable energy the input or the output? 3.Create a diagram showing the flow of energy for an electric fan. art.bradley.edu Chemical energy from the food we eat

22. Independent Practice ws art.bradley.edu