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Ch 2 vocab

chemical symbol International symbol for each element consisting of 1 or 2 letters
metal hard, shiny, malleable, ductile, and good conductors of heat and electricity
non-metal gases or brittle solids at room temperature
alkali metals highly reactive, particularly with water and oxygen
alkaline earth metals will burn in air if heated
atomic mass mass of an average atom of an element
atomic number number of protons in the nucleus of each atom of an element
halogens non-metals that are highly reactive
metalloid element that shares some properties with metals and some properties with non-metals
multiple ion charge more than one ion charge
noble gases most stable and unreactive elements in the periodic table
Bohr model diagram that shows the electron arrangement around the nucleus
electron shell region surrounding the nucleus of an atom
valence electron electrons in the outermost electron shell
valence shell outermost electron shell
Created by: s9vocab