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...Name atoms and periodic table unit crossword possible answers alcohol amu atom atomic bonding carbon covalent dalton ductile elements group hydrocarbon ionic ionization isotope leptons malleable mass metallic metalloids metals neutron neutrons nonmetals nucleus particles period protein proton quarks rutherford six sponch transition valence across down are considered this if they can be made protons composed of even into sheets smaller called a is vertical column on the to find number subtract from everything in universe mostly hydrogen with oh force carrier these types found middle positively charged dense center an have properties both organic compound consisting entirely particle has no charge two one up quark scientist created theory same electrons but different numbers abbreviation for units type where share process removing many free form ions always electron s outer most shell good conductors heat electricity also luster high horizontal row density used gold foil experiment help ...