CHEM 124 Study Guide - Midterm Guide: Scientific Notation, Significant Figures, Dimensional Analysis
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2: density, (cid:1830)(cid:1857)(cid:1866)(cid:1871)(cid:1872)(cid:1877)=(cid:1865)(cid:1853)(cid:1871)(cid:1871)/(cid:1874)(cid:1867)(cid:1864)(cid:1873)(cid:1865)(cid:1857, g/cm3, atomic structure, electron negatively charged particle (outside nucleus, proton positively charged particle (inside nucleus, neutron neutral (inside nucleus, nuclear/isotope symbols. 6: valence electrons outermost shell, core electrons electrons in lower orbitals. Ex: ti 1s22s22p63s23p64s23d2: isoelectronic elements that have the same # of electrons, solids types and cubic packing structures, amorphous atoms in random pattern, crystalline arranged in regular, repeating pattern, ionic compounds/metals. Simple cubic cell (scc: 1 atom @ each corner, 1 atom per cell, 6 coordination number, (cid:1853)=(cid:884)(cid:1870) Body centered cubic cell (bcc: 1 atom @ each corner & center, 2 atoms per cell, 8 coordination number. Face centered cubic cell (fcc: cubic close packing , 1 atom @ each corner & @ center of each face, 4 atoms per cell, 12 coordination number, (cid:1853)=(cid:886)(cid:1870)/ (cid:885, (cid:1853)= (cid:890)(cid:1870, v=a3. 7: coordination # - number of atoms each atom is adj. to.
