nova chemicals essay

discovery of such an element as gallium does not come as just any accidental discovery. Gallium or Ga, atomic number 31 was in a long research process for fifteen years by Lecoq de Boisbaudran. He had been meticulously studying the spectra of several chemical elements, Lecoq knew that each and every element produces its very own and distinct pattern of lines when heated, or spectra. As Lecoq de Boisbaudran continued his drive to learn more of the distinct element spectra, he distinguished that the element

Maxwell’s Demon is a thought experiment created by a mathematician James Clerk Maxwell to contradict the second law of thermodynamics. For example, you have a box filled with a gas (a mixture of hot and cold molecules) at the same temperature. This means that the temperature can have an affect on an average speed of the molecules. Some of the molecules will move slower than average, and some will move faster than the average. Suppose that a divider is placed in the middle of the box separating the

384 – 322 Aristotle – no voids! Opposed Democritus’ theory - 4 elements earth, fire, air water with dry, hot, moist and cold 500 – 1600 A.D. – age of alchemy Late 1700’s – law of conservation of mass – mass doesn’t change during a chemical reaction 1799 – Proust – law of constant

medium fluidized bed (ADMFB) [17–19]. Because of the advantages of high gas–solid contact efficiency, the fluidized bed has been widely investigated in catalytic cracking [20], drying [21], combustion [22], and other chemical industries, which have a significant effect on the chemical, environmental, and metallurgical industry around the world. As the novel application of the fluidized bed in the mineral field, ADMFB would significantly enrich the theory and application of the fluidized bed. At present

Noble gases are the most stable elements of the periodic table. They have many qualities that make them unique to other elemental groups. Noble Gases have many important differences that should be noted when studying the periodic table; such as the number of valence electrons and location, their state of matter, and their reactivity. When studying noble gases you should be aware of what mainly sets them apart from the other elements of the periodic table; their valence electrons. They are unique

I have encountered many chemistry moments in my life in this past year and even before that. So, I enjoy baking and that means that I get to see many chemical reactions when I bake. Like when I bake cookies or brownies there is a reaction when the ingredients heat up. They cook and mix together. They start at a more liquidy or mushy consistency and turn into a solid, even if it is a softer solid. And to make sure that my cookies or brownies stay fresh I like to cover them in plastic wrap of place

by the U.S. Chemical Warfare Service. The tests occurred starting in 1942 and ended in 1945, with the majority of the most severe tests held at the Naval Research Laboratory in Anacostia in Washington D.C. and Edgewood Arsenal in Maryland. The goal of the experiment was to determine whether different ointments, gas masks, and other protective clothes were effective in preventing mustard gas exposure. The scientists hypothesized that the Germans or Japanese would use chemical warfare in

energy. The enzyme or catalyst is not consumed in the reaction; therefore, the enzyme can be reused (Areda, 2017). Activation energy is the energy needed to start a chemical reaction (Reece, 2017). In other words, the activation energy is kind of like a barrier, in which enzymes help decrease the amount of energy needed to start the chemical reactions. Enzymes have unique shapes and one part of the enzyme that has a specific shape is the active site. The active site is where the substrate (reactant)

creating technology, and day-to-day items without the use of these metals, as it would be much more greener(9), and prevent further over-exploitation of the resource. Despite the fact, the yttrium is a great “greener” alternative for other elements/chemicals such as replacing lead in automobiles, or even replacing elements in medical needles (5,9)

Magnesium Magnesium is an element on the periodic table with an atomic number of 12 and an atomic mass of 24.305. Its complete electron configuration is 1s2, 2s2 2p6, 3s2. The most common ion formed from magnesium is Mg+2. Magnesium can be extracted from the minerals dolomite (CaCo3 MgCO3), carnallite (KCL MgCl2 5H2O), magnetite, olivine, and serpentine. It is most often obtained from seawater, in which each cubic kilometer contains about 1.3 billion kilograms of magnesium. It is also the third