Chemistry | 5.112 Principles of Chemical Science, Fall 2005 | Video Lectures | Lecture 26: Molecular Orbital Theory PubMed home AP Chemistry Review Activities AP Chemistry Interactive Review Activities In keeping with the new framework for AP Chemistry beginning in 2013 - 2014, I am indicating here if the topic to which a review activity relates has been dropped from the curriculum. It will be identified as excluded (Excluded) to indicate that the College Board has specifically excluded it. I will leave the reviews here, however, in case some of you find them useful. These are not graded assignments. Each time you reload the activity, the problems will be in a different order, and the answers will be reshuffled!
[IUPAC]IUPAC.org chemistry - dawnwelch7 Introductory Activity Rubric Matter and Its Changes Separating Mixtures Lab Information Packet Results: Sugar Crystals Paper Chromatography Tiny Salt Crystals in Crucible States of Matter Atoms, Ions, Isotopes, and Radioactive Decay Electromagnetic Spectrum Quiz Game The Periodic Table Ionic, Covalent & Metallic Bonds and Compounds Discovery Video "Water's Structure" Video (get login and password from Mrs. Naming CompoundsGame Naming Common Polyatomic Ions Game Chemical Reactions Redox Reactions Motion & Forces Energy Transformations Interdependence Developing Abilities for Scientific Inquiry
Stereoisomers Stereoisomers As defined in an earlier introductory section, isomers are different compounds that have the same molecular formula. When the group of atoms that make up the molecules of different isomers are bonded together in fundamentally different ways, we refer to such compounds as constitutional isomers. For example, in the case of the C4H8 hydrocarbons, most of the isomers are constitutional. Shorthand structures for four of these isomers are shown below with their IUPAC names. Note that the twelve atoms that make up these isomers are connected or bonded in very different ways. The bonding patterns of the atoms in these two isomers are essentially equivalent, the only difference being the relative orientation or configuration of the two methyl groups (and the two associated hydrogen atoms) about the double bond. Configurational Stereoisomers of Alkenes Some examples of this configurational stereoisomerism (sometimes called geometric isomerism) are shown below. Ethane Conformations
Chemistry Now The National Science Foundation (NSF) has joined forces with NBC Learn and the National Science Teachers Association (NSTA) to celebrate the International Year of Chemistry by creating "Chemistry Now"--a weekly, online video series that uncovers and explains the science of common, physical objects in our world and the changes they undergo every day. The series also looks at the lives and work of scientists on the frontiers of the 21st century... More. This video explains and illustrates the molecular structure of sodium chloride (NaCl) crystals; the structure and symmetry of crystal lattices; and why one crystalline solid, salt, melts another, ice. WebElements Periodic Table of the Elements