Noble Gases

Representative Gases Properties of Gases
Representative Gases Properties of Gases
Representative Gases & Properties of Gases Review 1. State the five assumptions of the Kinetic-Molecular Theory of gases. a) Gases consist of large numbers of tiny particles. These particles, usually molecules or atoms, typically occupy a volume about 1000 times larger than occupied by the same number of particles in the liquid or solid state. Thus molecules of gases are much further apart than those of liquids or solids. Most of the volume occupied by a gas is empty space. This accounts for the
Helium symbol He inert colorless odorless gaseous element In group 18
Helium symbol He inert colorless odorless gaseous element In group 18
Helium, symbol He, inert, colorless, odorless gaseous element. In group 18 (or VIIIa) of the periodic table, helium is one of the noble gases. The atomic number of helium is 2. The French astronomer Pierre Janssen discovered helium in the spectrum of the corona of the sun during an eclipse in 1868. Helium is the lightest of all gases except hydrogen. Helium solidifies at -272.2° C (-457.9° F) at pressures above 19,000 torr (25 atmospheres); helium boils at -268.9° C (-452.0° F) and has a densit
The transition metals as a whole are a rather non-reactive group This
The transition metals as a whole are a rather non-reactive group This
The transition metals as a whole are a rather non-reactive group. This group includes some of the most widely used and most precious elements in the world. It includes the elements gold, silver, copper, iron, aluminum, nickel and many others. These elements can be helpful to mankind in many ways. Iron, no doubt, is one of history and today’s most useful substances. Copper has been money, water pipes, jewelry, and has some useful alloys. Gold, history’s most known symbol for money and value has
Argon
Argon
Argon Argon is an inert gaseous element. It is the third most prevalent noble gas in the earth’s atmosphere. It is present to the extent of .94% by volume. It’s symbol is Ar. The name Argon came from the Greek word argos meaning inactive. Argon is colorless and odorless. It is in group 18 on the periodic table. It’s atomic number is 18 and it’s atomic weight is 39,948 U. Argon melts at -189.3 degrees Celsius and boils at -185.86 degrees Celsius. Argon is the third lowest in weight of the Nob
The Metallurgy of Copper Wire
The Metallurgy of Copper Wire
The Metallurgy of Copper Wire Introduction Copper is the preferred and predominant choice in the electrical industry because of its high conductivity, both electrical and thermal. In order to obtain the required properties, unalloyed high purity copper is almost always used. This article discusses the rationale for this choice, and pays particular attention to the underlying metallurgical principles. It is intended to serve as a technical discussion of pertinent developments spanning the past se
Asimov On Chemistry by Isaac Asimov
Asimov On Chemistry by Isaac Asimov
Asimov On Chemistry by Isaac Asimov The Book Asimov on Chemistry by Isaac Asimov is a collection of seventeen essays that he wrote for The Magazine of Fantasy and Science Fiction. This book is one of ten that were published by Doubleday & Company, Inc. Not all of the books centered on chemistry and like science. Most just covered anything Isaac Asimov wondered about. These Essays date back quite aways with a range from January 1959 to April 1966. INORGANIC CHEMISTRY The Weighting Game This i fou
Historical Development of Atomic Structure
Historical Development of Atomic Structure
Historical Development of Atomic Structure Yazan Fahmawi Sept. 30, 1995 T3 IBS Chemistry Ms. Redman The idea behind the atom goes back to the Ancient Greek society, where scientists believed that all matter was made of smaller, more fundamental particles called elements. They called these particles atoms, meaning not divisible. Then came the chemists and physicists of the 16th and 17th centuries who discovered various formulae of various salts and water, hence discovering the idea of a molec
The Noble Gases
The Noble Gases
The Noble Gases The Noble Gases are the far right elements on the periodic table. On the earth they are scarce so we donąt see much of them. They are do not react well with anything. In fact until around the 50ąs they hadnąt found anything that they would react with any of the gases. But then someone found out that Fluorine one the of most reactive elements could form compounds with Xenon. Later they found that it could react with most of the other nobles. Helium is one of the more scarce nobles
Oxygen
Oxygen
Oxygen Oxygen, symbol O, colorless, odorless, tasteless, slightly magnetic gaseous element. On earth, oxygen is more abundant than any other element. Oxygen was discovered in 1774 by the British chemist Joseph Priestley and, independently, by the Swedish chemist Carl Wilhelm Scheele; it was shown to be an elemental gas by the French chemist Antoine Laurent Lavoisier in his classic experiments on combustion. Large amounts of oxygen are used in high-temperature welding torches, in which a mixture
Xenon
Xenon
Xenon Xenon is element number 54 on the periodic table of the elements. It has a mass of roughly 131 atomic mass units. There are 77 neutrons and 54 protons in the nucleus of the atom. The symbol for xenon is Xe and it belongs to the family of elements called the noble gases. It is called a noble gas because the valance shell of one atom contains a full shell. Xenon is one of the most stable elements on the table. The 54 electrons are arranged, so that there are 2 in the 1st shell, 8 in the 2nd,
KRYPTON
KRYPTON
KRYPTON I am the chemical element known as Krypton. I can also be referred as Kr. I will be telling you about my history, my properties, my family and my occurrence. I will also be telling you about my uses and ores, also the analytical methods based on me. I received the name krypton from the Greek word hidden because I was hiding for so long, undetected. I am from a rare group of gases called noble gases. The other noble gases are helium, xenon, neon, argon and radon. I was discovered in Engla