ATOMIC STRUCTURE THE NUCLEUS: 1) THE PROTON:

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Presentation transcript:

ATOMIC STRUCTURE THE NUCLEUS: 1) THE PROTON: A) WEIGH 1 AMU ( 1/12 THE MASS OF COLD CARBON, 12C ). B) CONTRIBUTES MASS TO THE ATOM. C) THE NUMBER OF PROTONS IS INDICATED BY THE ATOMIC MASS NUMBER a) THE PROTON HAS A POSITIVE CHARGE b) INDICATES NUCLEAR CHARGE. c) INDICATES NUMBER OF ELECTRONS IN A NEUTRAL ATOM. d) INDICATES WHAT ELEMENT THE PARTICLE IS. e) SPECIFIC ELEMENTS HAVE SPECIFIC ATOMIC NUMBERS( EX CARBON HAS AN ATOMIC NUMBER OF 6, 6 PROTONS, ONY CARBON HAS SIX PROTONS). 2) THE NEUTRON: A) WEIGH 1 AMU. B) CONTRIBUTES THE BALANCE OF MASS TO THE ATOM (THE REST IS PROTONS). C) REDUCES PROTON REPULSION. D) HAS NO CHARGE. E) THE NUMBER OF NEUTRONS CAN CHANGE BETWEEN ATOMS. F) IF TWO PARTICLES DIFFER IN THE NUMBER OF NEUTRONS RTHEY ARE CALLED ISOTOPES.