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Unit 4 vocabulary

Atomic Mass average mass of one atom of an element
Periodic Table a chart where elements are organized into periods and groups according to their properties
Chemical Symbol one-or-two-letter code that stands or an element; Many symbols are abbreviations are the element's name
Period a row of elements in the periodic table arranged by atomic number
Group column of elements in the periodic table, in which elements have certain properties in common
Matter the material that all objects and substances are made of
Element substances that are the building blocks of all matter
Compound matter made of 2 or more elements
Atom smallest particle into which an element can be divided and still have the properties of that element
Electron negatively charged particle found outside the nucleus of an atom
Nucleus center of an atom, made up of protons and neutrons
Proton positively charged particle located in the nucleus of an atom
Neutron in an atom, particle with a neutral charge; located in the nucleus
Energy Level the amount of energy carried by an electron in an atom
Isotope atoms of the same element with different numbers of neutrons in the nucleus, and thus different atomic masses
Mass Number the integer nearest in value to the atomic weight of an atom and equal to the number nucleons in the nucleus of an atom
Atomic Number the number of positive charges or protons in the nucleus of an atom of a given element, and therefore also the number of electrons normally surrounding the nucleus
Metal such a substance in its pure state, as distinguished from alloys
Malleable capable of being extended or shaped by hammering or by pressuring from rollers
Ductile capable of being hammered out thin, as certain metals
Conductivity the property or power of conducting heat, electricity, or sound
Reactivity the relative capacity of an atom, molecule, or radical to go to undergo a chemical reaction with another atom, molecule or compound
Corrosion way in which acids react with some metals so as to eat away the metal
Alkali Metal any of the group univalent metals including potassium, sodium, lithium, rubidium, cedium, and francium, whose hydroxides are alkalis
Alkaline Metal any of the group of bevalent metals including barium, radium, strontium, calcium, and, usually, magnesium, the hydroxides of which are alkalis but less soluble than those of the alkali metals
Transition Metal any element in any of the series of elements with atomic numbers 21-29, 39-47, 57-79, and 89-107, that in a given inner ortibal has less than a full quota of electrons
Alloy a substance composed of two or more metals, or of a metal or metals with a nonmetal, intimately mixed, as by fusion or electrodeposition
Nonmetal an element not having the characteristic of metal, as carbon or nitrogen
Diatomic Molecule made of two or more atoms
Created by: frenchfry13