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B4 U3 L1+2

TermDefinition
atom the smallest particle into which an element can be divided and still be the same element
electron negatively charged particles within an atom
nucleus the small, dense center of an atom that is positively charged that is surrounded by electrons
proton the positively charged particles in the nucleus
nuetron uncharged particles in the nucleus
electron cloud the area that electrons move around the nucleus
atomic number the number of protons in the nucleus of an atom
mass number the total number of neutrons and protons in the nucleus of an atom
periodic table Mendeleev's arrangement of elements
chemical symbol abbreviation of element's name
avg. atomic mass the weighed avg of the masses of all isotopes of that element
metal conduct heat and electricity and are shiny
nonmetal dull, poor conductors of heat and electricity
metalloid some metal and some nonmetal properties
group vertical column of elements on periodic table
period row of elements on periodic table
Created by: 18hoffmannk0805