Two or more forms of atoms of the same element with different masses, atoms containing the same number of protons but different numbers of neutrons.
- 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...
- Protein Design: Automated protein discovery and synthesis
In this paper I describe (theoretically) the method(s) of automated protein discovery and synthesis.
- What's In Your Beverage? How to Ensure Quality Control with CO2 Analytical Support
Calibration standards, performance audits, and the FDA's never-ending safety, labeling, and inspection requirements are just the tip of the iceberg when it comes to dealing with the increasingly stringent quality control standards of the beverage industry. As these quality standards become...
- 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?
Energy that matter processes by virtue of its motion.
The elements in a horizontal row of the periodic table.
At constant temperature the volume occupied by a definite mass of a gas is inversely proportional to the applied pressure.
A ternary compound containing H, O, and another element, often a nonmetal.
Spectrum that contains all wave-lengths in a specified region of the electromagnetic spectrum.
A substance added to react with the charge, or a product of its reduction, in metallurgy, usually added to lower a melting point.
Study of chemical changes produced by electrical current and the production of electricity by chemical reactions.
Trapping of heat at the surface of the earth by carbon dioxide and water vapour in the atmosphere.
Electrolytic cell for the commercial electrolysis of molten sodium chloride. For further information see Electrochemistry or Fuel Cells.
One faraday of electricity corresponds to the charge on 6.022 x 1023 electrons, or 96,487.301 coulombs.
A vertical column in the periodic table, also called a family.
The amount of matter that would be converted into energy if an atom were formed from constituent particles.
All the forces of attraction among particles of a liquid.
The degree of polymerization, the average number of monomer units per polymer unit.
The buildup of a product of oxidation or a reduction of an electrode, preventing further reaction.
Conjugated Double Bonds
Double bonds that are separated from each other by one single bond -C=C-C=C-.
Any of a number of lines corresponding to definite wavelengths of an atomic emission or absorption spectrum, represents the energy difference between two energy levels.
Alpha (a) Particle
Helium ion with 2+ charge, an assembly of two protons and two neutrons.
Refers to an optically active substance that rotates the plane of plane polarized light counterclockwise, also called levo.
Potential difference between two electrodes, a measure of the chemical potential for a redox reaction to occur.