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Notes lab 04 the atom structure

  1. 1. Each element is pure, it has its own unique type of atom, which is identified by its atomic number. (1 – 118) Everything is made up from these elements or combinations thereof
  2. 2. The smallest particle of an element is an atom.  The atom is the basic building block of matter  It usually has no electric charge or has a neutral charge  The atom is actually mostly empty space!
  3. 3. The atom consists of 3 subatomic particles that differ in their location, electrical charge and relative mass. ▪Proton ▪ Neutron ▪Electron
  4. 4. The Proton  Found in the nucleus of the atom. The largest particle, almost equal in mass to the Neutron. It is a positively charged particle (P+ )
  5. 5. The Neutron  Also found in the nucleus. Almost equal in mass to the Proton. It has no charge (N0 ) it is NEUTRAL
  6. 6. The Electron  Found outside the nucleus in the ”Electron Cloud” and also in the outermost energy level “The Valence”  Much smaller than the proton or neutron, having almost no mass.  It is negatively charged (E- )
  7. 7. Show Videos on Atoms
  8. 8.  The outer energy level electrons for each type of atom. Number from 1 – 8.  They create a type of “shell” around the atom that allows for atomic bonding.
  9. 9. Isotopes  Atoms of the same element can have different numbers of neutrons; the different possible versions of the atom of an element are called isotopes  Written as a symbol and a number i.e. C 14 is an isotope of carbon called Carbon 14
  10. 10. Ions ▪Atoms which gain electrons will have a negative (-) charge and become negative ions. ▪Atoms which lose electrons will have a positive (+) charge and become positive ions.

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