The law stating that a pure substance will always have the same percent by weight. Different samples of a pure compound always contain the same elements in the same proportions by mass.
- Features of the Scanning Tunneling Microscope
The scanning tunneling microscope (STM) invented by Heinrich Rohrer and Gerd Binnig in the 1980s still manages to do a great job today and competes with more advanced microscope types. The scanning tunneling microscope is used for studying the surface atoms that are found on various materials. The...
- Diamonds Are Forever
Diamonds are still a girl's best friend, right? We love the shiny gems. They are the most popular rocks sold today. But what exactly are they, anyway? Where do they come from? What else are they used for?
- Protein Design: Automated protein discovery and synthesis
In this paper I describe (theoretically) the method(s) of automated protein discovery and synthesis.
- Harmful Chemicals Found In Food
It's getting close to New Years and many people are starting to think about how to lose those extra pounds they managed to gain over the holidays. There are many sorts of diets and fads that have developed over the years from cutting carbs to cutting protein. Everyone has their own opinion as to...
- What are Compound Microscopes?
Most of the microscopes used today are compound. A compound microscope features two or more lenses. A hollow cylinder called the tube connects the two lenses. The top lens, the one people look through, is called the eyepiece. The bottom lens is known as the objective lens. Below the two lenses is...
For acid-base titrations, organic compounds that exhibit different colors in solutions of different acidities, used to determine the point at which reaction between two solutes is complete.
Chemical Hygiene Officer (CHO)
A person or employee who is qualified by training or experience to provide technical guidance in the development and implementations of the provisions of a Chemical Hygiene Plan (CHP)
Any species that can make available a share in an electron pair.
Compound containing both an amino and a carboxylic acid group.The --NH2 group.
Hydrocarbons that contain only single bonds. They are also called alkanes or paraffin hydrocarbons.
The ability of a substance to be broken down into simpler substances by bacteria.
Process of reducing the concentration of a solute in solution, usually simply by mixing with more solvent.
A spherically symmetrical atomic orbital, one per energy level.
A favourable interaction of two electrons with opposite m , values in the same orbital.
Energy required to pair two electrons in the same orbital.
Amount of a specified pure product actually obtained from a given reaction. Compare with Theoretical Yield.
Refers to an optically active substance that rotates the plane of plane polarized light clockwise, also called dextro.
A compound that contains more than one double bond per molecule.
Weak Field Ligand
A Ligand that exerts a weak crystal or ligand field and ge- nerally forms high spin complexes with metals.
Regular periodic variations of properties of elements with atomic number (and position in the periodic table).
The substance that oxidizes another substance and is reduced.
A substance capable of causing or producing cancer in mammals.
Absolute Entropy (of a substance)
The increase in the entropy of a substance as it goes from a perfectly ordered crystalline form at 0 °K (where its entropy is zero) to the temperature in question.
Entropy is a measure of the “dilution” of thermal energy.
A substance added to react with the charge, or a product of its reduction, in metallurgy, usually added to lower a melting point.
Compound in which an oxygen atom is bonded to two alkyl or two aryl groups, or one alkyl and one aryl group.