Earth Sciences 1023A/B Lecture Notes - Lecture 3: Hydrotherapy, Ductility, Atomic Number
16 Apr 2018
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Minerals are the building blocks of rocks foundation of our planet. Provide raw materials for items used on a daily basis (if it can"t be grown, it"s gotta be mined come from the ground) Iron, zinc, etc. essential to living things ultimately come from minerals) Chemical element: pure chemical substance that can"t be broken down to other substances by normal chemical means. H2, o2, n2, s, fe, zn, pb, etc. Smallest particle of matter that retains characteristics of an element is an atom. Around nucleus = electrons that from cloud-like shells, each w defining energy level. # of neutrons = atomic weight - atomic number (number of protons) remaining amount of atomic weight is weight of electrons. Ex. common carbon has 6+, must have 6- to balance overall charge of atom in order to be stable (6(+) + 6(-) = 0 overall charge) Have half-full sort of attitude; atoms w/o full electron want to fill their outer shell.
