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The top documents tagged [periodic tablemass number]
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Atoms and the periodic table
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Ions An atom that carries an electrical charge is called an ion If the atom loses electrons, the atom becomes positively charged (because the number of
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Atoms: The Building Blocks of Matter
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R The Periodic Table. D’Mitri Mendeleev 1860’s First to publish Placed similar elements in same vertical column Left open spaces for elements he predicted
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Structure of the Atom Refer to: Science Probe 10 - Chapter 8
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Atoms: The Building Blocks of Matter
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A Guided Tour of the Periodic Table
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