Atoms and Isotopes (68)

Atoms and Isotopes (68) - The Atom Atomic Number and Mass...

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LecturePLUS Timberlake1 The Atom Atomic Number and Mass Number Isotopes
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LecturePLUS Timberlake2 Atomic Theory Atoms are building blocks of elements Similar atoms in each element Different from atoms of other elements Two or more different atoms bond in simple ratios to form compounds
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LecturePLUS Timberlake3 Subatomic Particles Particle Symbol Charge Relative Mass Electron e - 1- 0 Proton p + + 1 Neutron n 0 1
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LecturePLUS Timberlake4 Location of Subatomic Particles 10 -13 cm electrons protons neutrons 10 -8 cm nucleus
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LecturePLUS Timberlake5 Atomic Number Counts the number of protons in an atom
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LecturePLUS Timberlake6 Periodic Table Represents physical and chemical behavior of elements Arranges elements by increasing atomic number Repeats similar properties in columns known as chemical families or groups
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LecturePLUS Timberlake7 Periodic Table 1 2 3 4 5 6 7 8 11 Na
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LecturePLUS Timberlake8 Atomic Number on the Periodic Table 11 Na Atomic Number Symbol
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LecturePLUS Timberlake9 All atoms of an element have the same number of protons 11 Na 11 protons Sodium
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LecturePLUS Timberlake10 Learning Check AT 1 State the number of protons for atoms of each of the following: A. Nitrogen 1) 5 protons 2) 7 protons 3) 14 protons B. Sulfur 1) 32 protons 2) 16 protons 3) 6 protons C. Barium 1) 137 protons 2) 81 protons 3) 56 protons
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LecturePLUS Timberlake11 Solution AT 1 State the number of protons for atoms of each of the following: A. Nitrogen 2) 7 protons B. Sulfur 2) 16 protons C. Barium 3) 56 protons
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LecturePLUS Timberlake12 Number of Electrons An atom is neutral The net charge is zero Number of protons = Number of electrons Atomic number = Number of electrons
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LecturePLUS Timberlake13 Mass Number Counts the number of protons and neutrons in an atom
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This note was uploaded on 11/09/2011 for the course CHEM 100 taught by Professor Sdfsdf during the Winter '08 term at BYU.

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Atoms and Isotopes (68) - The Atom Atomic Number and Mass...

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