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CMS Periodic Table

15 terms - periodic table

TermDefinition
Atom the basic particle from which all elements are made
Nucleus the central core of the atom made up of protons and neutrons
Neutron a small particle in the nucleus of the atom; it has no electrical charge
Proton a positively charged particle that is part of an atom's nucleus; the number of protons is known as the atomic number
Electron a negatively charged particle found outside the nucleus of an atom
Mass Number the sum of protons and neutrons in the nucleus of an atom
Metal a class of elements characterized by physical properties that include shininess, malleability, ductility, and conductivity; these are found on the left-hand side of the zigzag line on the periodic table
Nonmetal an element that lacks most of the properties of a metal; these are found on the right-hand side of the zigzag line on the periodic table
Metalloid an element that has some characteristics of both metals and nonmetals; these are found hugging the zigzag line on the periodic table
Atomic Mass the average mass of all the isotopes of an element; this is the decimal value found on an element card
Periodic Table a chart of the elements showing the repeating pattern of their properties; arranged by atomic numbers of the elements
Atomic Number the number of protons in the nucleus of an atom; this number identifies an element and its location on the periodic table
Period a horizontal row of elements in the periodic table
Group elements in the same vertical column of the periodic table; also known as a 'family'
Chemical Symbol a one- or two-letter representation of an element on the periodic table
Created by: Rita.Rogers