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Periodic table Table of elements
element identity of an atom
element symbol letters that represent the type of atom it is
atomic mass weight of atom
atomic # the #of protons and electrons is in the atom
Period horizontal row if elements
Group vertical row of atoms
Family when a group of atom share the same traits
Chemical formula Equasion of atoms an
Metals any of a class of elementary substances, as gold, silver, or copper, all of which are crystalline when solid and many of which are characterized by opacity, ductility, conductivity, and a unique luster when freshly fractured.
nonmetals an element not having the character of a metal, as carbon or nitrogen.
metalloids a nonmetal that in combination with a metal forms an alloy. an element that has both metallic and nonmetallic properties, as arsenic, silicon, or boron.
noble gasses any of the chemically inert gaseous elements of group or of the periodic table: helium, neon, argon, krypton, xenon, and radon.
Reactivity the relative capacity of an atom, molecule, or radical to undergo a chemical reaction with another atom, molecule, or compound.
Dimitri mendeleev russian that created the first periodic table
trend when a family has the same traits on a periodic table
energy level the amount of reactivity an d propertys an atom has
valance electrons electrons that bond with eachother
chemical property a property or characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed:
physical property when the identity is not changed but is changed by physical means
Created by: NatHug2020