the atoms

the atoms

1. atomic models

   • dalton (1803)
   • thomson (1904)
   • rutherford (1911)
   • bohr (1913)
   • erwin (1926)

2. the nucleus of the atom

   • prontons
   • neutrons

3. the atoms cortex

   • electrons

4. union of atoms

   • molecules
     • atoms join together to from molecules. through bonds they are able to receive, donate, or share electrons. the mechanism to form bonds depends on the atom.
   • mixtures
     • elements and compounds can form mixtures. a mixture is the union of two or more substances in variable amounts.
   • there are two types of mixtures
     • homogeneous mixtures
       • their components are distributed uniformly, and they cant be told apart
     • heterogeneous mixtures
       • their components retain their properties and can  separate