Atomic+Structure+Facts

[|Can objects or people really touch?]

http://www.ted.com/talks/brian_cox_on_cern_s_supercollider http://www.ted.com/talks/garrett_lisi_on_his_theory_of_everything __ Atomic Structure Facts __ Atomic number – how many protons Atomic number – determines the kind of atom Atomic mass = Protons + Neutrons (Average) Atomic mass – Protons = Neutrons Atomic mass – Neutrons = Protons Isotopes – Element with different numbers of neutrons

1. Protons, neutrons, and electrons are the three subatomic particles that make up atoms. 2. Protons and neutrons are found in the nucleus of an atom.
 * [[image:Atom.png width="228" height="192"]] ||  || [[image:12-atom-per-bit.jpg width="268" height="200"]]12 atoms used to hold a bit of informtion. ||



3. Electrons are found in a cloud around the nucleus. (Thousands of times bigger than the nucleus) 4. The number of protons in an atom's nucleus determines the kind of atom. 5. Nuclei are tiny, but contains almost all the mass of an atom. 6. 1,836 electrons equal the mass of one proton or neutron. 7. Protons (+), neutrons (0), electrons (-) Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. 8. Usually atoms have a neutral charge, because each proton will attract an electron to the atom. 9. The atomic number of an atom is the number of protons in its nucleus. 10a. Atomic mass is the average mass of an element’s atoms. (Isotopes included) 10b. Atomic mass = protons and neutrons together 11a. Subtracting an element's Atomic Number from its Atomic Mass will give the number of neutrons in the element's atoms. 11b. Atomic Mass minus Atomic Number equals the number of neutrons. 12. Atoms of the same kind with different numbers of neutrons are called isotopes.
 * [[image:AtomsNeutral.png width="320" height="162"]] ||  || [[image:ChargedAtoms.png width="309" height="152"]] ||

http://physicalsciencecottrell.wikispaces.com/Atom+Facts What do neutrons do in the nucleus. http://www.fnal.gov/pub/today/archive/archive_2013/today13-04-12.html Neutrons are Invisible, but what does this mean? http://www.fnal.gov/pub/today/archive/archive_2014/today14-08-29.html How do like charges attract? http://www.fnal.gov/pub/today/archive/archive_2013/today13-03-29.html How do opposite charges repell? http://www.fnal.gov/pub/today/archive/archive_2013/today13-03-15_NutshellReadMore.html [|DIY Cloud Chamber]