EES 1030 Lecture Notes - Lecture 5: Bravais Lattice, Electron Shell, Mass Number
16 Feb 2018
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Document Summary
Mineral: an inorganic, naturally occurring, solid with a characteristic chemical composition and crystalline structure. Two very different things, but made from exactly the same stuff. Naturally occurring: not made by people in a lab lab salt is not a mineral! Crystalline structure: crystal lattice: orderly arrangement of atoms, repeating structure. Atom: smallest recognizable unit of element that still retains. Obsidian is not a mineral: it fulfills all but the crystalline structure, b/c it cools from magma so fast that not all the atoms can arrange in the exact same lattice. Since many minerals form under specific ranges of conditions, we can use them to infer. Stability fields: different structures are stable under specific temperature/pressure conditions temperatures and pressures. Nucleus contains most of the mass: made of protons (+) and neutrons (0) Orbiting in a cloud, energy shell, thing, around the nucleus, is made of electrons (-)
