Assumes that electron pairs are arranged around the central element of a molecule or polyatomic ion so that there is maximum separation (and minimum repulsion) among regions of high electron density.
- 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...
An instrument that measures the charge-to-mass ratio of charged particles.
Study of chemical changes produced by electrical current and the production of electricity by chemical reactions.
Refers to an optically active substance that rotates the plane of plane polarized light clockwise, also called dextro.
A class of silicate and aluminosilicate minerals with sheet-like structures that have enormous surface areas that can absorb large amounts of water.
The percentage of the weak electrolyte that ionizes in a solution of given concentration.
A gas formed by boiling or evaporating a liquid.
A small patch of photographic film worn on clothing to detect and measure accumulated incident ionizing radiation.
Potential difference between two electrodes, a measure of the chemical potential for a redox reaction to occur.
Many representative elements attain at least a share of eight electrons in their valence shells when they form molecular or ionic compounds, there are some limitations.
Law of Conservation of Matter
There is no detectable change in the quantity of matter during an ordinary chemical reaction.
HNO3: A strong acid, it is toxic and can cause severe burns. Transparent colorless or yellowish, fuming, suffocating, caustic and corrosive liquid. Nitric acid boiling point is 83C. A 70 percent solution is used in the S.S.E. laboratory for junction depth measurements. Nitric acid is also present in the metal etch solution used for the Aluminum etch procedure.
A change in which one or more new substances are formed.
A protein that acts as a catalyst in biological systems.
The reaction in which hydrogen adds across a double or triple bond.
A solution that has been titrated against a primary standard. A standard solution is a secondary standard.
Coordination Compound or Complex
A compound containing coordinate covalent bonds.
Molecular orbital resulting from head-on overlap of two atomic orbitals.
Compounds containing predominantly covalent bonds.
Mixing of metal with other substances (usually other metals) to modify its properties.
The relative amounts of reactants and products involved in a reaction, maybe the ratio of moles. millimoles, or masses.