These are examples of calculations for determining the simplest formula of a compound from its percent composition, with links to other worked chemistry problems and homework help.
03/11/03 - Nomenclature for Ionic Compounds
This is a summary of the past and present naming conventions for ionic compounds.
03/08/03 - Top Picks - Science Fair Project Books
This is a collection of top-rated science fair project resources for students, parents, and educators. There are books that describe experiments, a CD-ROM packed with thousands of pages of ideas, and reference materials for making posters, giving presentations, and understanding the judging process.
03/05/03 - Sample Chemistry Problems - Mass Percent Composition
These are examples of mass percent composition calculations, with links to other worked chemistry problems and homework help.
03/03/03 - Timeline of Element Discovery
Use this table to look up the date an element was discovered. Links to additional element facts are provided, too.
03/01/03 - Element Symbol Quiz
Can you match the chemical symbol to its element? Here's a ten-question quiz to test your knowledge.
02/25/03 - Sample Chemistry Problems - Mole - Gram Conversions
These are examples of mole-to-gram and gram-to-mole conversions, with links to other worked chemistry problems and homework help.
02/23/03 - Lanthanides & Actinides - The Rare Earth Metals
Learn about the properties of the rare earth metals. This 3-part article includes an overview of the rare earths and separate sections for the lanthanide series and actinide series.
02/19/03 - Metric Conversion Quiz
Test your ability to make metric-to-metric conversions with this quick quiz.
02/17/03 - Periodic Table Quiz
Test your knowledge of the elements with this fun, quick quiz!
02/16/03 - Applying to Medical School - What to Do if your Application is Rejected
Most applicants to medical school don't get accepted! Make plans for this possibility. Here is advice on what to do if your application is rejected, with concrete steps to take to improve your application for the next year.
02/15/03 - Sample Chemistry Problems - Avogadro's Number
These are examples of calculations involving Avogradro's number, with links to other worked chemistry problems and homework help.
02/14/03 - Sample Chemistry Problems - Molecular Mass Calculations
These are examples of molecular mass calculations, with links to other worked chemistry problems and homework help.
02/11/03 - Sample Chemistry Problems - Atomic Mass & Isotopic Abundance
These are examples of atomic mass and isotopic abundance calculations, with links to other worked chemistry problems and homework help.
02/10/03 - How to Build a Bomb - Feinstein Amendment 419
Can you learn how to build a bomb from About Chemistry? Probably, but you won't find any explicit instructions. Learn about Feinstein Amendment 419 and find out why bomb-making instructions are verboten.
02/06/03 - How to Prepare Gases
Here are simple instructions for preparing common gases from ordinary chemicals. The gases include carbon dioxide, oxygen, nitrogen, methane, nitrous oxide, and several others.
02/05/03 - Sample Chemistry Problems - Protons & Electrons in Ions
These are examples of calculations used to determine the number of protons and electrons in ions, with links to other worked chemistry problems and homework help.
02/03/03 - Spiders in Space
Columbia's STS-107 carried Australia's first animals into space. Learn about the Columbia spider experiment and the Skylab 3 experiment and visit links to ground-based research and space exploration.
02/01/03 - Sample Chemistry Problems - Isotopes and Nuclear Symbols
These are examples of isotope and nuclear symbol problems, with links to other worked chemistry problems and homework help.
01/31/03 - Electronic Configuration of Elements
Here's a useful table for your chemistry homework or general use! This is a compilation of the electron configurations of the elements up through number 104. I've included some tips for writing out stable configurations and for shorthand notation.
01/29/03 - Sample Chemistry Problems - Law of Multiple Proportions
Here's an example of a Law of Multiple Proportion problem, with links to other worked chemistry problems and homework help.
01/28/03 - How to Make Red Cabbage pH Indicator
Make your own pH indicator solution! Red cabbage juice indicator is easy to make, exhibits a wide range of colors, and can be used to make your own pH paper strips.
01/21/03 - Sample Chemistry Problems - Unit Conversions
These are examples of unit conversion problems, with links to other worked chemistry problems and homework help.
01/18/03 - Rock Tumbler Instructions
Here are instructions for tumbling rocks using a rotary tumbler and a vibratory tumbler, as well as instructions for polishing jewelry in a rock tumbler.
01/15/03 - Sample Chemistry Problems - Significant Figures
These are examples of significant figure, accuracy, and precision problems, with links to other worked chemistry problems and homework help.
01/14/03 - Sample Chemistry Problems - Temperature Conversions
These are examples of temperature conversion problems, with links to other worked chemistry problems and homework help.
01/09/03 - Working from Home - Chemistry & Other Sciences
Are you looking for a way to work at home in the sciences? Here is a list of employment options, with notes on what to expect when you make the transition to home and ideas for staying up-to-date in your field.
01/06/03 - Chemistry of Smoke Machines
Have you ever wondered how smoke machines work or wanted to make your own smoke or fog? Here's your chance to find out how it works. There are separate sections for each type of non-toxic smoke generator, together with important safety tips.
01/01/03 - Element Types - Chemistry of Groups
Learn the locations of element types on the periodic table and get summaries of the defining characteristics of element groups, such as alkaline earths, noble gases, halogens, etc.
