Subatomic ParticlesAn atom is composed of three subatomic particles.Proton:Positive chargeLocated within the nucleus of the atomElectron:Negative chargeLocated circling around the nucleus in probable pathsNeutron:No chargeLocated within the nucleus of the atom beside the protonsParticle mass is measured in unified atomic mass units, their symbol is defined by au.
IonsAn ion is an atom with a chargeCharge is changed by neutron amountSubtract protons from isotopes to find number of neutrons
OrbitalTypesValence Electron DaltonAtomic OrbitalMolecular OrbitalSpinorbitals Theory Niels Bohr 1)Everything is a solid atom 2)Everything is made from atoms Energy Level Proposed that different energy levels existed in an atoms electron shell
Element ChartAtomic symbol Li Cu S Na Fe Element Lithium Copper Sulfur Sodium Iron Mass 7 64 32 23 56Atomic Number 3 29 16 11 26 (Protons) Electrons 3 29 16 11 26 Neutrons 4 35 16 12 30
Electron Energy FieldAn Electron is contained within an energy field.Each energy field has a specific number of electrons that can be contained within it.Atoms gain or lose electrons to create a more stable valence shellMax holdShell 1- 2 electronsShell 2- 8 electronsShell 3- 8 electrons