Chemistry

Chemistry

1. Topic 1 Atoms and elements

   • Modern Periodic Table
     • Increasing atomic number
       • Number of protons
     • Groups
       • Vertical
         • Number of electrons on outer shell
     • Periods
       • Horizonatal
         • Number of shells
   • The Nucleus
     • Protons
       • Relative mass of +1
       • Relative Charge of +1
     • Neutrons
       • Have same mass as proton
       • Has no overall charge
       • Isotopes
         • Different amounts of neutrons
         • Same amount of electrons
           • So isotopes of the same element react the same in a reaction
   • Periodic Table
     • Mendleev
       • Left gaps
       • Used increasing atomic mass and properties to organize data

2. Bonds

   • Ionic Bonds
   • Covelent Bonds

3. Metals and Gases

   • Noble
     • Group 0
       • unreactive (inert)
   • Alkali
     • Group 1
       • More reactive further down
   • Halogens
     • Group 7
       • More Reactive higher up