ERS120H5 Lecture Notes - Lecture 4: Ionic Bonding, Talc, Chemical Formula
Document Summary
A material consisting entirely of one kind of atom; elements cannot be subdivided or changed by chemical reactions: describe the difference between covalent, ionic and van der waals bonds. Covalent bonds: the attachment of one atom to another that develops when the atoms share electrons. Ionic bonds: the attachment of one atom to another that happens when one atoms transfers electrons to another. Van de waals bonds: the relatively weak attachment of two elements or molecules due to their polarity and not due to covalent or ionic bonding. These are listed from strongest to weakest: define and be able to recognize the fundamental properties of a mineral (naturally occurring, orderly internal arrangement/crystal structure, definable chemical composition, inorganic). Naturally occurring: formed in nature not in factories. Orderly internal arrangement/crystal structure: atoms are fixed in a specific orderly pattern. Definable chemical composition: it is possible to write a chemical formula for the mineral. Inorganic: organic bonds are molecules containing some carbon-hydrogen bonds.
