molecule - (physics and chemistry) the simplest structural unit of an element or compound free radical, radical - an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule that has lost an electron and will stabilize itself by stealing an ...
(physics and chemistry) the simplest structural unit of an element or compound Atom (philosophy) In logical atomism, a fundamental fact that cannot be further broken down. Molecule (nontechnical usage) a tiny piece of anything Atom (historical) The smallest medieval unit of time, equal to fiftee...
When an atom loses or gains electrons, it becomes... An electrolyte A bond A compound An ion Atoms, Elements And Compounds Quiz Atoms, elements and compounds quiz Welcome everyone, to another wonderful quiz from the world of science. Today, we’ll be turning our collective attention to the...
Examples of substances that are not atoms include water (H2O),table salt(NaCl), and ozone (O3). Basically, any material with a composition that includes more than one element symbol or that has a subscript following anelement symbolis a molecule or compound rather than an atom....
Answer to: Define atom, element, molecule, and compound. Give an example of each. By signing up, you'll get thousands of step-by-step solutions to...
In chemical reactions, atoms are not made, destroyed, or changed—no new paper clips appear, no paper clips get lost and no paper clips change from one size/color to another. In any compound, the numbers and kinds of atoms remain the same—the total number and types of paper clips that...
15. Relating to the replacement of one of several atoms or radicals in a compound by another atom or radical. 原子序,原子构造限定在如链条上的连结环的空间构型里的一组原子 16. The most stable adsorption site for both oxygen and iodine atom on the silver surface is four-fold hollow site. ...
admin tools messaging getting the plexus backend and frontend log files adding javascript files for custom functionality writing javascript files for custom functionality integration with chemaxon's compound registration system shared data sources in plexus connect configuration files edit views simple table ...
Each molecule of an element as a rule is composed of two atoms. Elements combine to form compound substances of various numbers of atoms in the molecule. Water is an example of a compound substance, or chemical compound. Its molecule contains three atoms; two atoms of hydrogen, and one ...
Bell and Owen [18] reported that the lattice expands by about 5% when one interstitial C or N atom exists in the fcc unit cell. Also, in the Fe-N system, there is a compound, Fe4N, which has the exactly same crystal structure as the cluster model shown in Fig. 4-12. Its lattice...