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Reference Sources
The TeleSpec Infrared Spectra DatabaseA continually updated database of IR spectra for compounds containing C, H, O, N, and halogen atoms. Free, although registration is required.Organic chemistry glossaryOrganic Chemistry is full of numerous similar sounding terms. The terms and resources on the list should make organic chemistry a bit less confusing.
Periodic Tables
Web ElementsPeriodic table plus description of each element's chemical and physical properties with supporting tables.The Elements and IsotopesThe Elements and Isotopes is a comprehensive application that will display information from the Periodic Table and the Table of the Isotopes.Periodic TableStandard information is available for each element such as: density, boiling and melting points, covalent and atomic radii, valences, electronegativity, ionization energy, electron configurations...… Periodic Table of the ElementsClick on an element in the periodic table and receive information on that element's history, sources, compounds that it forms, uses, costs, the isotopes it forms. Periodic Table Data baseIncludes about a dozen physical properties such as boiling and melting point,, density, thermal conductivity, and specific heat capacity.MIT Periodic TableGood for investigating periodic properties. A graph of the selected property versus atomic number is available for each element. Los Alamos Periodic TableDescription of history, properties, resources, uses, isotopes, forms... for each element. ChemicoolPeriodic Table of the Elements, with a legend describing each element . Click on an element of interest and get data on its density, boiling point, melting point, heat of fusion, ionization energies, electron configuration, physical and chemical properties, abundance, atomic radius, isotopes…Java Periodic Table of the ElementsClick on a physical property of choice and a graph of that physical property versus atomic weight is displayed. Next, click on an element of choice and the value of the physical property for the selected element is given.Lenntech Periodic TableThis site differs from other periodic table sites in that is carries health and envrionmental effects for the most important elements. The periodic table is presented in 5 languagesPeriodic Table on Answers.comchem.answers.com is an informative guide for both students and educators with specific articles on periodic tables. Periodic Table on Answers.comchem.answers.com is an informative guide for both students and educators with specific articles on periodic tables.
Data Tables and Physical Constants
Vapor Pressure of WaterThe table of vapor pressure data for water is given in kPa. Conversion factors given for conversion of pressure to atm or mm Hg. Tables of Chemical DataTables of fundamental physical constants, thermodynamic properties of pure substances, ionization constants of monoprotic and polyprotic acids, solubility products, stability constants, aqueous standard reduction potentials.... Table of the NuclidesIncluded for each nuclide: atomic mass, binding energy,atomic abundance, half-life, possible parent nuclides...Physical ConstantsTables of physical constants for chemistry and physics.Table of Common IonsNames, formulae, and charges of some common ions. Nuclear ScienceNot the easier site to navigate but filled with reference information including a periodic table of the nuclides, nuclear science and astrophysics glossaries, and descriptions of nine nuclear science experiments. But in particular check out the section: Learn about Nuclear Science. The discussion/explanation and the graphics are excellent. Use the links in the middle of the webpage.Half-Lives of Selected Radioactive IsotopesA table of 41 isotopes with their half-lives plus an explanation of C14 dating.CHEMystery ReferencePhysical constants, solubilities, densities, oxidation states, reduction potentials, discussions of various topics in beginning chemistry.
Calculations and Conversions
Ideal Gas Law CalculatorSolves Ideal Gas Law Equation when three of the variables are known. Ideal Gas CalculatorFor the four variables in the ideal gas law equation: pressure p, volume v, temperature T, or number of moles n, enter data for three of the variables and the program calculates the value of the fourth. Conversion Factor CalculatorConverts between units in chemistry, physics, engineering... Concentration UnitsDescribes parts per million PPM, parts per billion PPB, parts per trillion PPT, and parts per quidrillion PPQ in mathematical AND in understandable terms. Chemical CompositionEnter a chemical formula and the percentages of each of the elements included in the formula is calculated. First step in calculation of empirical formula. ChemfinderEnter the name, chemical formula, or molecular formula of a chemical and get its description plus chemical and physical properties. NIST WebBookDetermine the chemical identity of a sample by entering formula, name, molecular weight, IR data, mass spect data, or by using the on site applet to draw a structure.Molecular Weight CalculatorMolecular mass is calculated and displayed when a chemical formula is entered.
Open
Quizzes and TutorialsA set of 15 test banks with answers covering topics such as: atoms and molecules, chemical equations, thermochemistry, quantum chemistry, molecular geometry, bonding, gaseous state, solutions, rate of reactions, acids and bases, equilibrium, solubility, entropy, and electrochemistry. Each test bank is futher broken down into about 10-15 sub-categories which facilitates concentration on a topic of interest. Very comprehensive.
Chemical Names and Nomenclature
ACD/NameGenerate systematic names from chemical structures, and structures from systematic or common names with the click of a button. Freeware version available for download.Acronym DatabaseSearch for chemical name for common chemicals such as PVC that is formed from the initial letters of the words of a compound term: polyvinyl chloride.Basic Organic NomenclatureIncludes alkanes, aromatics, functional groups...Common NamesA table of synonyms for many common chemicals; for example Borax and sodium tetraborateMolecules with Silly NamesDescription and structure of molecules such as: arsole, bastardane, megaphone, buckminster fullerene, munchnones. Click on MOTM Bristol and scrool to the bottom of the page.
Definitions
Chemistry DefinitionsA "textbook" of chemistry definitions accessible by subject category.Chemistry DictionaryContains definitions of chemical terms.Definitions and terms in Organic ChemistryA dictionary of preferred definitions and terms in Organic Chemistry.What is a Mole?A history of the development of the mole concept. Easy reading.
Textbook
Biochemistry Lecture NotesOutline notes for a introductory level university biochemistry course. The first chapter provides an overview of the topic plus succinct coverages of bonding and aqueous solution chemistry. Later chapters cover proteins, enzymes, metabolism, carbohydrates, amino acid biosythesis and degradation, the Urea Cycle...Friends School Chemistry HomepageA database of links to on-site definitions and short explanations. The text and the accompanying graphics are clear and to the point. The range of topics is limited but the those included are treated thoroughly. Hopefully, this is a work in progress and additional topics will be forthcoming. An excellent site for beginning chemistry students.Intro to Chem IIOn-site links to traditional textbook treatment of second semester topics such as: thermodynamics, electrochemistry, chemical kinetics, transition metal chemistry. Mostly definitions with no illustrations.Introductory Organic ChemistryAlmost exclusively presented in narrative form with almost no graphics or links. A good source for basic topics such as alkanes, alkynes, aromatics, heterocylics,and functional groups but also includes sections on petroleum, pesticides and dyes under fine chemicals, lipids, molecular genetics…
Laboratory Help
GraphingBasic tutorial for graphing experimental data. Includes a plot of data taken from a table, interpretation of resulting graph, calculation of constants…Laboratory PracticesIncludes sections on writing laboratory reports and on laboratory safety.
Specific Databases
ACD/Chromatography Applications DatabaseThe free Public Chromatography Applications Database under ACD/Web Librarian contains 1830 HPLC/GC separations provided by major column vendors. The database can be searched by structure, substructure, and structural similarity, as well as by numerous chromatographic parameters.Abbreviations of Chemical CompoundsType in an abbreviation of the name of a chemical compound and get its full name, chemical name, and structure.Amino Acid DatabaseStructure and basic data given for amino acids.CCD ChemExper Chemical DirectoryA search engine that allows a chemical to be found by submitting its molecular formula, IUPAC name, common name, CAS number, catalog number, substructure or physical characteristics. Really useful for determining the number and identity of all the isomers for a particular molecular formula.ChemDexGeneral index of Links to University chemistry departments world wide, chemical companies worldwide, databases...Smell DatabaseSmell, physical properties, and structure (wire-frame and space) representations. Rotating molecule is available using RasMol software.
Odds and Ends
HydrocabonsMolecular formulas, structural formulas, and names for the first 10 unbranched open-chain alkanes along with their respective boiling, melting points and density are listed. UPAC system for naming alkanes is also included.Nobel Prize Winners in ChemistryListed by year and alphabetically.The scientific methodTwo page discussion of the basic elements of the scientific method as written for a university biology laboratory. Self contained with no links for elaboration of explanations.Washington Penn Plastic Co.We provide compounded polyproylene and polyethylene products, tailored to our customers' application requirements, replacing high-cost engineering resins with lower cost materials by expanding the properties and capabilities of polyolefin compounds. |
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