atomic number - The periodic table is organized in order of increasing ____ _____., Mendeleev - Father of the periodic table., groups - Columns on the periodic table are called , periods - Rows on the periodic table are called , metals - Large group of elements on the periodic table that have luster, are malleable & ductile, conduct electricity, and are mostly solid., nonmetals - Large group of elements on the periodic table that are dull, are brittle, are insulators, and are mostly liquid or gas., metalloids - Large group of elements that sit on the "stair steps" that share properties with metals and nonmetals (starts with m), valence electrons - groups numbers 1, 2, and 13-18 tell us the number of ______ ______, energy levels - Period numbers tell us the number of ______ ________, Alkali Metals - Elements in the 1st group are called _____ _______, Alkaline Earth - Elements in the 2nd group are called _____ ______ metals., Halogens - Group 17 elements are called ______., Noble Gases - Group 18 elements are called _____ _______., Electron Cloud - Currently accepted model of the atom, E_____ C_____., Which part of the atom contains the most mass? - Nucleus, Which part of the atom contains the most volume? - Electron Cloud, What does the nucleus the atom contain? - Protons and Neutrons, What does the Electron Cloud of the atom contains? - electrons, What is the charge of the nucleus? - Positive, What is the charge of protons? - Positive +, What is the charge of neutrons? - Neutral or no charge, What is the charge of the energy levels? - Negative --, What is the charge of electrons? - Negative, If the protons and electrons are equal in an atom, what is the charge of the atom? - Neutral,

Periodic Table and Atomic Structure

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