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Atoms and P.T.:L1-L4

TermDefinition
Periodic Table An arrangement of the elements in order of their atomic numbers such that elements with similar properties fall in the same column,group.
Nonmetal An element that conducts heat and electricity poorly.
Chemical Symbol A one-, two-, or three-letter abbreviation of the name of an element.
Average Atomic Mass The weighted average of the masses of all naturally occurring isotopes of an element.
Metal An element that is shiny and that conducts heat and electricity well.
Metalliod An element that has properties of both metals and nonmetals.
Group A vertical column of elements in the periodic table; elements in a group share chemical properties.
Period In chemistry, a horizontal row of elements in the periodic table.
Atom The smallest unit of an element that maintains the properties of that element.
Electron A subatomic particle that has a negative charge.
Nucleus In physical science, an atom's central region, which is made up of protons and neutrons.
Proton A subatomic particle that has a positive charge and that is located in the nucleus of an atom.
Neutron A subatomic particle that has no charge and that is located in the nucleus of the atom.
Electron Cloud A region around the nucleus of an atom where electrons are likely to be found.
Atomic Number The number of protons in the nucleus of an atom.
Mass Number The sum of the number of protons and neutrons in the nucleus of an atom.
Chemical Bond An interactions that holds atoms or ions together
Valence Electron An electron that is found in the outermost shell of an atom and that determines the atom's chemical properties
Ion A charged particle that forms when an atom or group of atoms gains or loses one or more electrons
Ionic Bond The attractive force between oppositely charged ions, which form when electrons are transferred from one atom to another
Covalent Bond A bond formed when atoms share one or more pairs of electrons
Molucle A group of atoms that are held together by chemical forces
Metallic Bond A bond formed by the attraction between positively charged metal ions and the electrons around them
Created by: 19warrent0618