CHEM 210 Chapter Notes - Chapter 1: Electronegativity, Boiling Point, Weak Interaction
Document Summary
Structure of a compound determines reactivity: by u(cid:374)dersta(cid:374)di(cid:374)g that, you"ll (cid:271)e a(cid:271)le to predi(cid:272)t phe(cid:374)o(cid:373)e(cid:374)a (cid:271)ased o(cid:374) stru(cid:272)ture, drawing is an indispensable tool. Precision in drawing leads to precision in thinking. Correct representation will help guide you through a problem. In detail and in writing: no matter how trivial they seem. Ionic: composed of ions bearing non-neutrally charged ions, usually crystalline solids with high melting points, soluble in water. Covalent: neutral compounds, may be gases, liquids or solids, non-polar covalent compounds. Caused by electrostatic forces: act between charged particles. Particles of opposite charge attract each other. Crystal lattice: 3-dimensional arrangement of ions arranged in an alternating. Bonding fashion: electrostatic attractions between ions. Ions bear even distribution of charge: the high melting point and boiling point are indicators of strength of the bonds. Lewis structures: covalence is the sharing of a pair of electrons, stable molecules have 4 pair of electrons in valence shell.
