CHEM 51 Lehigh

Chem Final Study Guide Avogadro\'s Number = 6.02 x 10^23 (molecules/mole constant) used to find number of molecules Molecular Concentration = Moles/Liter = Molarity. Moles = (Grams)/(Grams per Mole) Density = Mass/Volume (An element weighs X grams/Mo

CHAPTER 8 ELECTRONS IN ATOMS ATOMIC STRUCTURE AND PERIODICITY WHY ARE CHEMICAL PROPERTIES PERIODIC? Isaac Newton and classical mechanics . good for baseballs and planets, not so hot for atoms What we already know . atoms = protons and neutrons in th

Chem. 25: Studio #8 _ _Heat of Neutralization and Hess\'s Law STUDIO:_ NAME:_ HEAT OF NEUTRALIZATION OF ACIDS AND BASES In the main, its not a good thing to run a chemical reaction on your skin. At one time, some people proposed that if you spilled

CHAPTER 2: ATOMS AND THE ATOMIC THEORY How chemists view matter from the ground up . ATOMIC THEORY from ,earth, air, fire and water to hydrogen, helium, lithium. The MOLE . a link from microscopic to bulk properties # particles / mole . # g / mole St

ADDENDUM TO CH 8 MATERIAL from CH 9: (see Section 9-6) How do we know this business about unpaired vs. paired spins? MAGNETIC BEHAVIOR . not refrigerator magnets (ferromagnetism grouping atoms together in the solid state in `domains\' .) Let\'s treat

CHAPTER 15: PRINCIPLES OF CHEMICAL EQUILIBRIUM with additional features from CHAPTER 16: ACIDS AND BASES The issue: When we did stoichiometry, we assumed that reactions go to completion. Many do. Many others do not. Herewith, the story of reactions t

Chem. 25: Studio #10_Lewis Structures and VSEPR NAME: _ STUDIO: _ Lewis Structures and the VSEPR Model The structure of molecules in large part determines their physical and chemical properties. Lewis structures are most useful for providing an init