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Java Games: Flashcards, matching, concentration, and word search. |
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families of elements and periodic table history
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| A | B |
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| alkali metals | sodium and potassium |
| alkaline earth metals | magnesium and calcium |
| transition elements | iron and zinc |
| "boron family" | indium and aluminum |
| "carbon family" | silicon and germanium |
| "nitrogen family" | phosphorus and antimony |
| chalcogen family | sulfur and selenium |
| halogen family | iodine and bromine |
| noble gases | krypton and argon |
| inner transition elements | uranium and nobelium |
| family | a column of the periodic table, elements with similar chemical and physical properties |
| period | a horizontal group of elements on the periodic table |
| Dmitri Mendeleev | Arrange elements by increasing atomic mass and properties will repeat themselves in an orderly fashion |
| John Newlands | Arrange elements by atomic mass and properties will repeat every 8th element |
| Johann Dobereiner | Triads |
| Henry Moseley | Arrange elements by number of protons and properties will repeat in an orderly fashion |
| valence electrons | electrons in the highest energy level |
| electron configuration | a listing of the sublevels and energy levels in the order which they fill the electron cloud |
| sublevels | s, p, and d |
| energy levels | 1,2,3,4,5,6,7,.... |
| orbitals | part of a sublevel which holds two electrons |
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