The smallest part of an element or chemical compound which can exist independently with all the properties of the element or compound. It is made up of one or more atoms bonded together in a fixed whole number ratio. Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagr...
It may consist of atoms of a single chemical element, as with oxygen (O2), or of different elements, as with water (H2O). As components of matter, molecules are common in organic substances (and therefore biochemistry) and are what allow for life-giving elements, like liquid water and bre...
Distinguish between an element and a compound and give an example of each. What is the periodic table of elements? Define atoms, molecules, and ions and give an example of each. Different kinds of atoms of the same element are referred to as? Compare the similarities and differen...
Homonuclear molecules are formed from only one element. That is why known as homonuclear. These molecules can consist of various numbers of elements which depends on the properties of the element. Some of the elements form molecules of more than one size. Nobel gases have only one atom...
I’ve written about water before and in particular, if you’ve been paying very close attention, you might remember that November 12th marks the anniversary of the day, in 1783, that Antoine Lavoisier formally declared water to be a compound rather than an element. Which means that November ...
While carbon is so very useful for creating new molecules, especially those related to the origins of life, the exploration ofinterstellar moleculesexcluding this element has other benefits for driving new areas ofastrochemistry. The first is to grow our understanding of fundamental chemical processes...
the building blocks of complete models. A molecule is an element of substructure that serves a particular purpose. The analogy with chemistry is not exact, but the name does convey much of the same spirit. One of the simplest molecules, and one that probably appears in most models, is the...
This rule is well obeyed in practice; I’ve never heard of an exception. It turns out that there is a classic argument why this should be so. This property of dye molecules is closely analogous to a well-known property of individual atoms, namely Hund’s Rule #1, also known as Hund’...
Liquid crystal device liquid crystal element, and liquid crystalline functional materials PROBLEM TO BE SOLVED: To obtain a liquid crystal functional material suited in liquid crystal elements, optical modulation elements, and display elements which have reduced consumption of electric power, high luminance...
We present a convenient way to obtain an optical power limiting behavior in a quantum dot molecule system, induced by an interdot tunneling. Also, the effect of system parameters on the limiting performance is investigated; interestingly, the tunneling rate can affect the limiting performance of th...