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ENERGY (Single Energy Concept (Three Principles (1) Energy can be imagined…

- - - - system due to the arrangement of particles
      - Attractions lead to decrease in Energy
      - Solid has least
        
        Liquid has more
        
        Gas has greatest amount
      - Involved when a phase shift occurs
    - - due to attractions of atoms within molecules
      - directed between specific atoms in the molecule.
    - - Moving particles
      - Ping- Pongs vs. Golf Balls
      - Baseball thrown by coach vs. Pro
  - - - energy transferred between macroscopic objects that exerts force on one another
    - - energy that is transferred by collisions of countless microscopic objects
      - Hotter to colder
      - If they all have the same mass, Hotter one is moving faster than the colder one.
      - Okay to say "I heat an object"
    - - energy is transferred by the absorption or emission of photons
      - light bulb
      - Heat from sun!
- - - - 1) Matter is made of tiny particles that are in constant motion
      - 2) These particles exert long and short range repulsion and attractions
        
        Attraction reduces energy
        
        Repulsion cause increase in energy
      - 3) Hotter sample= faster molecules that colder sample