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Thermochemistry, image, image, image, image, image, image, image, …

- - - - movement of the object
    - - interaction of molecules
- - - - attraction and repulsion of the creation of temporary polar molecules
    - - when two neutral non-polar molecules,
        
        approach each others electronic cloud.
    - - when electrons from one molecule move to the other side
        
        Avoiding repulsion
        
        creating temporary polar molecules
  - - - interaction between polar molecules
      - 2 polar molecules, 1 positive and 1 negative
    - - interaction between an ion and a polar molecule
  - - - like
        
        oxygen, nitrogen or fluorine
- - - - increase in 1° of the temperature of 1g of the substance
- - - - from
        
        the system to the surroundings
        
        the surroundings get hotter
  - - - from
        
        the surroundings
        
        the surroundings get cooler
- - - - can be measure when the system moves from an initial state to some final state
  - - - when the reactant has more energy
        
        and
        
        the products less
      - the ΔH is negative
      - ΔH = H.products - H.reactants
        
        ΔH = reduced energy
    - - The products have higher energy
        
        and
        
        are less stable than the reactants
      - the ΔH is positive
      - ΔH = H.products - H.reactants
        
        ΔH = energy taken in
- - - - to cooler system
      - That are in contact