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unit 4 vocabulary

Atomic mass Averge mass of one atom of an element
Periodic table A chart of elements showing the repeating patturn of their produce.
Chemical Symbol A one-or-two representation of an element
Period Chemistry: a row of elements in the periodic table arranged by atomic number.
Group Elements in the same berticl column of the periodic table; also called family.
Matter Anything that has mass and occupies space
Element A substance that cannot be broken down into other substance
Compound A substance in which two or more elements are chemically joined.
Atom Smallest particle into which an element can be divided and still have the properties
Electron Negativley charged particle found outside the nucleus of an atom
Nucleus Biology: structure in the center of a cell that contains the cell's DNA
Proton Positivey charged particle located in the nucleus of an atom
Neutron In an atom, particle with a neutral charge; located in teh nucleus.
Energy level The amount of energy carried by an electron in an atom, determine, the electron's average distance from the nucleus.
Isotope An atom with the same number of protons and a diffrent number of neutrons from other atoms of the element.
Mass number The sum of protons in the nucleus of an atom
Atomic number The number of protons in the nucleus of an atom.
Metal A class of elements characterized by physical properties that include shininess, malleable, ductilde cd.
Created by: isaiahhill