The rates of effusion of gases are inversely proportional to the square roots of their molecular weights or densities.
- 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...
The arrangement of atoms (not lone pairs of electrons) around a central atom of a molecule or polyatomic ion.
The capacity to do work or transfer heat.
D -Transition elements (metals)
B Group elements except IIB in the periodic table, sometimes called simply transition elements EX. Fe, Ni, Cu, Ti .
For further information see Metals.
Collision between molecules resulting in a reaction, one in which the molecules collide with proper relative orientations and sufficient energy to react.
The time required for half of a reactant to be converted into product(s). The time required for half of a given sample to undergo radioactive decay.
Combination of symbols that indicates the chemical composition of a substance.
A nuclear reactor that produces more fissionable nuclear fuel than it consumes.
Hydrocarbon derivative containing an [OH] group bound to an aromatic raing.
Valence Bond Theory
Assumes that covalent bonds are formed when atomic orbitals on different atoms overlap and the electrons are shared.
A substance added to react with the charge, or a product of its reduction, in metallurgy, usually added to lower a melting point.
Density is the ratio b/w Mass and Volume: D=M/V
It is the force in dynes acting along the surface of the liquid 1cm in length and perpendicular to it.
Molecular orbital resulting from head-on overlap of two atomic orbitals.
The mass percent of each element in a compound.
A commercial term used to describe ethanol that has been rendered unfit for human consumption because of the addition of harmful ingredients to make it sales tax-expempt.
Refers to the overall processes by which metals are extracted from ores.
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.
The direct solidification of a vapor by cooling, the reverse of sublimation.
Covalent bond in which there is an unsymmetrical distribution of electron density.
The geometric arrangement of orbitals containing the shared and unshared electron pairs surrounding the central atom of a molecule or polyatomic ion.