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Periodic Table
Term | Definition |
---|---|
Valence Shell | Outermost shell of an atom |
Atomic Mass | Number of protons plus the number of neutrons |
Conductivity | ability for heat/electricity to flow through |
Neutron | part of an atom with a neutral charge. resides in the nucleus. |
Electron | part of an atom with a negative charge. orbits the nucleus of an atom. |
Malleable | ability to be flattened |
Ductile | ability to be stretched but not break, NOT BRITTLE |
Proton | part of an atom with a positive charge. resides in the nucleus. |
Luster | ability to reflect light |
Reactive | causes a chemical reaction and releases energy |
Group (Family) | Known as groups or families, columns on the table (go up and down); Elements in a group have the same number of electrons in the outer level. |
Period | Rows on the table (side to side); Each row represents the number of energy levels. |