02 Notes - Protons, Neutrons, Electrons

02 Notes - Protons, Neutrons, Electrons - Pluchino Regents...

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Pluchino – Regents Chemistry Atoms, Formuals & Reactions – 02 Protons, Neutrons & Electrons Aim: What components make up an atom? Do Now: Sketch what you think the atom looks like. Structure of the Atom: 3 Subatomic Particles: Particle Charge Location Mass Proton +1 Nucleus 1 amu Neutron 0 Nucleus 1 amu Electron -1 Orbitals 1/1836 amu amu: atomic mass unit 1 amu = 1.673 x 10 -27 kg Atomic Mass (M): mass of the neutrons and protons in an atom of an element. All of the mass is found in the nucleus of the atom. Atomic Number (Z): the total number of protons in an atom of that element. Determines the identity of the element. Electron Configuration: provides information on how electrons are arranged around the nucleus. Neutral atoms will always have equal numbers of protons and electrons.
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How is the number of neutrons in an atom determined? Determining the number of Neutrons: 1. Round the atomic mass to the nearest whole number.
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This note was uploaded on 01/01/2012 for the course CHEM 101 taught by Professor Donahue during the Spring '11 term at Long Island U..

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02 Notes - Protons, Neutrons, Electrons - Pluchino Regents...

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