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Periodic Table gabe

Periodic Table a table illustrating the periodic system, in which the chemical elements, formerly arranged in the order of their atomic weights and now according to their atomic numbers
Element cannot be separated into simpler substances by chemical means
Element Symbol code for a chemical element
Atomic Number the number of positive charges or protons in the nucleus of an atom of a given element
Atomic Mass the mass of an atomic particle, sub-atomic particle, or molecule
Period a length or portion of time.
Group is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table
Family is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table
Chemical Formula a way of expressing information about the proportions of atoms that constitute a particular chemical compound
Metals good electrical and thermal conductor
Nonmetals element that doesn't have the characteristics of metal including the ability to conduct heat or electricity
Metaloids properties are intermediate between those of metals and solid nonmetals
Noble Gasses any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table
Reactivity the relative capacity of an atom, molecule
Dmitri Mendejeev Russian Chemist that helped develop the periodic law
Trend provide chemists with an invaluable tool to quickly predict an element's properties
Energy level fixed amount of energy
Valence Electrons the electrons in the outer shell of an atom. The valence electrons are the ones involved in forming bonds to adjacent atoms
Chemical property any of a material's properties that becomes evident during, or after, a chemical reaction
PysycalProperty any property that is measurable, whose value describes a state of a physical system
Created by: GabStu2020