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Matter & Its Home

Atomic Structure and Periodic Table

The smallest unit of matter. Atom
Positively charged subatomic particle that is found in the nucleus of an atom. Proton
The neutral or no charge subatomic particle that is found in the nucleus of an atom. Neutron
The negatively charged particle found in a cloud around the nucleus of an atom. Electron
The center of the atom, where the protons and neutrons are located. Nucleus
Antother name for the location of electrons on the Bohr model: orbitals,energy levels, rings and ___? shells
The name for the electrons found on the outermost shell or electron ring of an atom. valence electrons
The name of the number on an element key that tells you the number of protons for that element. atomic number
The name of the number on a periodic table element key that shows the number of protons plus neutrons. atomic mass
This is used to describe atoms that have the same number of protons and electrons. electrically neutral
Letters on the periodic table that are shorthand for the name chemical symbol
Protons, neutrons and electrons; parts of an atom subatomic particles
A pure substance, made only of one kind of atom element
Model of an atom showing the placement and numbers of protons, neutrons and electrons Bohr Model
Anything that has mass and volume matter
Horizontal rows on the periodic table; elements in the same row have the same number of electron rings. period
Elements arranged in columns; elements in the same column share similar chemical characteristics since they have the same number of valence electrons. group
Elements found to the left of the zig-zag (metalloid) line; they have luster, are malleable, are good conductors and are solids. metal
Elements found to the right of the zig-zag (metalloid) line; they are gases or are brittle solids at room temperature; they have characteristics opposite of metals. nonmetal
Group of elements that rest on the zig-zag line that show characteristics of both metals and nonmetals. metalloids
Group number 18 on the Periodic Table which are inert due to the fact that their valence electron ring is full. Noble Gases
Unreactive; will not react with other elements. Inert
Created by: lauriemerrick