The nurse selects the nursing diagnosis of Risk for Impaired Skin Integrity related to immobility, dry skin, and surgical incision. Which of the following represents a properly stated outcome/goal? Th...
The electrons flow through a wire from the platinum electrode. The wire is connected to an electrical-current meter and to the platinum electrode on the other side. The protons move through the lower portion of the fuel cell and combine with oxygen and the electrons on the other side to for...
All elements are arranged in the periodic table by their atomic number -- the number of protons in their nucleus. Aluminum's lucky number is 13, so an aluminum atom has 13 protons. It also has 13 electrons. The elements located above and below aluminum on the periodic table form a ...
Whatever his thought process, Mendeleev ultimately arranged the elements according to both atomic weight and valence electrons. Not only did he leave space for elements not yet discovered, but he predicted the properties of five of these elements and their compounds. In March 1869, he presented th...
Normal atoms are made up of protons and neutrons in the nucleus (see How Atoms Work), surrounded by a cloud of electrons. In plasma, the electrons separate from the nucleus. Once the energy of heat releases the electrons from the atom, the electrons begin to move around quickly. The ...
Why don't electrons in atoms repel? Why is energy released when bonds are formed? What is the difference between an anion and a proton? Explain. How are alloys produced? Why do covalent compounds not conduct electricity? Why don't molecular compounds conduct electricity, but ionic compounds do...
What is the definition of an alkoxide and how are they formed? How are electrons like baseballs? How are they unlike baseballs? Why is energy released when bonds are formed? How can 4-methyl-3-hexanol be synthesized from 3-pentanone?
Structures containing silicon and magnesium are dominant in the basaltic crust. Therefore it is heavier than the granitic crust; its density varies between 3 and 3.5 gr/cm3. It lies under the granitic layer and on the oceanic base. Therefore the basaltic crust is sometimes called the oceanic...
You start off with an element, such as magnesium, that is made up of a large number of molecules that contain electrons, protons and neutrons. The spark of fire will heat up the electrons and excite them. As they get more excited, they are released from their molecular bonds. This result...
At its most basic, water is a molecule with one oxygen atom and two hydrogen atoms, bonded together by shared electrons. It is a V-shaped polar molecule, which means that it's charged positively near the hydrogen atoms and negatively near the oxygen atom. Water molecules are naturally attrac...