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Atoms & Periodic Tab
Atomic Structure and the Periodic Table
Term | Definition |
---|---|
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 |