Please enable JavaScript.

Coggle requires JavaScript to display documents.

Chemistry, Energy - Coggle Diagram

- - - - Lin etc
        Triangles stuff...
      - Lone pair reduces the angle by 2.5
      - Bond length longer >> increase
        (other bonds become closer)
    - - How to decide
        EN difference
    - - Rules
        
        least charges
        
        central atom - least EN
        
        if we need to put a positive ,
        it must be on the less EN
        (and conversely)
      - Some bonds are 1.5
  - - - How many 'things'
        (bond pairs and lone pairs)
        around the center??
  - - - Breaking one mole of bonds requires>>>
- - - - Gaining
    - - Releasing
        
        Types - defined
        
        Bond
        
        Break one mole mole of bonds
        
        IE
        
        Energy change when 1 mole of GASEOUS atoms lose 1 mole of electron to form 1 mole of GASEOUS +1 cations
        
        State Change
        
        fusion
        
        vaporisation
        
        Reaction
        
        Reaction eg. H2 + N2 ->> NH3 (Haber Process)
        
        Combustion
        
        Neutralisation
        
        Formation
        
        EA
        
        Lattice
        
        Hydration
        
        Solution
    - - CHEMICAL SYSTEM
    - - joules per mole
- - - - n=m/Mr
        
        2??
        
        3??
        
        Simple
      - RMM - Ar + Ar
    - - pV=nRT
      - n x 22.7 dm3 mol−1 = V
    - - Concentration / Molarity
        
        c=n/V
        
        Titration
    - - eg How many ions are in 2g of Al2O3
        
        m/RMM=2/102=0.0196moles
        0.02 moles Al2O3 = 0.1 moles ions
        n x Na = numbers of ions
  - - - Making a solution
        
        ???
      - Steps
        
        Error
    - - Units?
        P - Pa not atm
        T - Kelvin
        V - m3 - not cm3 or dm3
        
        joule? Work - F x d
        N x meter
        N = ma
        = kg x m/s2
        P = F / A
        = N / m2 = Pa
- - - - Increase Top Right
    - - p,shells
        attraction between p (nucleus) and
        the outermost electrons (valence electrons)
    - - Decreases top right
        
        p ^ ,
        Ns between the outer electron and the nucleus =
        therefore less attraction between
        the protons in the nucleus and the outer electrons
- - - - IE
    - - Emission Spectra
        
        Hydrogen
        
        Giving Out - Light - Photons
        
        colors -E=hV
- - - - Lattice
    - - R - P
  - - - Sublimation
      - BE
- - - - P - R
    - - R - P