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Atoms & Periodic Tab

Atomic Structure and the Periodic Table

Atom The basic unit of matter
Nucleus Center of atom containing protons and neutrons
Electron Cloud Surrounds the Nucleus - contains electrons
Protons Positively charged, found in the nucleus, contributes to mass and determines an elements identity.
Neutron No charge, found in the nucleus, contributes to mass
Electron Negative charge, orbits nucleus in electron cloud, Does Not Contribute to Mass
Atomic Mass Protons + Neutrons
Atomic Number The number of protons in the nucleus
CORES all names for electron Energy levels, Cloud, Orbitals, Rings, Energy Levels, Shells
Valence Electrons Outermost electrons found on the furthest orbital - determine reactivity - 2) 8) 8)
APE Atomic Number = Proton Number = Electron Number
MAN Mass Number - Atomic Number ----------------------- Neutron Number
amu Atomic Mass Unit
Reactivity How likely an atom is to bond
Periodic Table Arrangement of elements according to atomic number
Group Vertical alignment on the periodic table
Period Horizontal alignment on the periodic table
Element Pure substance made up of the same atoms
Compound More than one element bonded
Element A pure substance
Created by: tgon