Chemistry Essays Examples For College & High School Students in PDF

1489 total results

Franks J. Horgan Filtration Plant That Provide Safe Drinking Water to Taps by Filtering the Water (1122 words, 5 pages)

Frank J. Horgan Filtration PlantIntroduction The Frank J. Horgan Filtration Plant is located Southeast of Toronto onthe shores of Lake Ontario (See map). Its purpose is to provide safe drinkingwater to our taps by filtering the water. The water is gathered from LakeOntario. This plant has a production capacity of ... Read More

An Analysis on Enthalphy Change as the Name Given to the Amount of Heat Absorbed in a Reaction Carried out at Constant Pressure (653 words, 4 pages)

Evaluating An Enthalpy Change That Cannot Be Measured Directly.Dr. Watson.Introduction.We were told that sodium hydrogencarbonate decomposes on heating to give sodiumcarbonate, water and carbon dioxide as shown in the equation below-2NaHCO3(s) Na2CO3 (s) H2O (l) CO2 (g) DeltaH1This was given as deltaH1 and we had to calculate as part of ... Read More

A Comparison on the Effect of the Cleaning Chemicals Before and After They Have Been Frozen (434 words, 3 pages)

Do Cleaning Chemicals Clean As Well After They Have Been FrozenProblemThe researcher is trying to determine whether or not cleaning materialswill clean as well if they have been frozen solid and subsequently thawed outuntil they have returned to a liquid state of matter.The researcher will use Dial Antibacterial Kitchen Cleaner, ... Read More

The Element of Copper and Its Industrial Uses (669 words, 3 pages)

CopperBlake AdamsPeriod 3 Grade 82597 Copper is a mineral. it is not a plant or a animal. Copperis a metallic metal. It can never be broken down into differnet substances bynormal chemical means. Copper was one of the first metals known to humans.People liked it because in its native condition, ... Read More

The Element of Chlorine and Its Industrial Uses (506 words, 3 pages)

ChlorineChlorine is (at room temperature) a greenish-yellow gas that can bereadily liquefied at 5170 Tarr or 6.8 atmospheres, at 20 C (68 F), and has avery disagreeable odor. Its Element Symbol is Cl, atomic number is 17, andatomic mass is 35.453. Chlorines melting point is -101 C or 149.8 F. ... Read More

An Introduction to the History of Chloroflourocarbons (1180 words, 6 pages)

Chloroflourocarbons Chloroflourocarbons were discovered in the 1920's by Thomas Midgley, anorganic chemist at General Motors Corporation. He was looking for inert, non-toxic, non-flammable compounds with low boiling points that could be used asrefrigerants. He found what he was looking for in the form of two compoundsdichlorodifluoromethane (CFC-12) and trichloromonoflouromethane (CFC-11). ... Read More

Simple Explanation About What the Atoms Are (276 words, 2 pages)

Atom BookHey kids! Today I'm going to introduce you to the world of atoms. Atoms arelittle things that you or anybody else have ever seen. Make up things like trees,cars, paper, even you. So let's shrink down to size and see what it's like.We're going to into the Helium atom ... Read More

Asymmetric Epoxidation of Dihydronaphthalene with a Synthesized Jacobsen’s Catalyst (2171 words, 12 pages)

Asymmetric Epoxidation of Dihydronaphthalene with a Synthesized Jacobsen'sCatalystJustin Lindsey120896Chem 250 GGProfessorTim HoytTA Andrea EgansAbstract. 1,2 diaminocyclohexane was reacted with L-()-tartaric acid to yield(R,R)-1,2-diaminocyclohexane mono-()-tartrate salt. The tartrate salt was thenreacted with potassium carbonate and 3,5-di-tert-butylsalicylaldehyde to yield(R,R)-N,N'-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamine, which wasthen reacted with Mn(OAc)24H2O and LiCl to form Jacobsen's catalyst. Thesynthesized Jacobsen's ... Read More

The History of Helium Production in the United States (1146 words, 5 pages)

"How Is Helium Produced?"Production Although Helium is one of the most common elements in the universeit is a rare gas on earth. It exists in the atmosphere in such small quantities(less than five parts per million) that recovering it from the air isuneconomical. Helium is produced as a by-product of ... Read More

An Analysis of the Role of Chemical Engineers (525 words, 3 pages)

Chemical EngineerThe chemical engineer is an invaluable link between scientificprinciples and manufacturing realities. It involves the use of chemical,physical, and engineering principles.The scientist in a laboratory does basic research to develop newcompounds and processes. When the scientist discovers a product that may beuseful, the chemical engineer takes over. They adapt ... Read More

A Study of Phosphates (866 words, 4 pages)

Phosphates Phosphates may be created by substituting some or all of the hydrogen of aphosphoric acid by metals. Depending on the number of hydrogen atoms that arereplaced, the resulting compound is described as a primary, secondary ortertiary phosphate. Primary and secondary phosphates contain hydrogen and areacid salts. Secondary and tertiary ... Read More

A Discussion of Nuclear Legacy (1111 words, 5 pages)

Nuclear Legacy "There is 10 thousand tons of nuclear waste on Earth." Many scientist arein search for new and efficient ways to dispose of these lethal by-productswhich can destroy life itself. Radioactive products can be either beneficial ordevastating. It all depends on how we use them. In the field of ... Read More

The Lab Protocols (478 words, 3 pages)

Lab Protocols Through trial and error my class and I have learned that screwing aroundand misbehaveing in lab not only results in multiple page papers, but can alsobe harmful, dangerous, and costly to our teacher and school.There are many rules or "protocols" that should be followed in a labenviroment. In ... Read More

The Role and Importance of Catalysts in Chemical Reactions and the Industry (1039 words, 5 pages)

The Role Catalysts In Chemical Reactions, Their Importance In Industry, Problemsand New DevelopmentsOXFORD AND CAMBRIDGE SCHOOLS EXAMINATION BOARD. General Certificate Examination- Advanced Level Chemistry (Salters') - Paper 3 mock.ROBERT TAYLOR U6JW.A Catalyst is a substance that alters the rate of a reaction. The catalystremains unchanged at the end of the ... Read More

Plutonium is a Radioactive Metallic Element That Is Occasionally Found in Nature (847 words, 4 pages)

PlutoniumPlutonium is a radioactive metallic element. Although it is occasionallyfound in nature, mostly all of our plutonium is produced artificially in a lab.The official chemical symbol for plutonium is Pu, coming from its first andthird letters. Its atomic number is ninety-four. Plutonium is able to maintainits solid state until very ... Read More

The Key Role of Oxygen and Its Compounds in the Processes of Life and Industry (2591 words, 12 pages)

OxygenOxygen and its compounds play a key role in many of the important processes oflife and industry. Oxygen in the biosphere is essential in the processes ofrespiration and metabolism, the means by which animals derive the energy neededto sustain life. Furthermore, oxygen is the most abundant element at the surfaceof ... Read More

Characteristics of Nuclear Fusion (2386 words, 10 pages)

Nuclear FusionFor a fusion reaction to take place, the nuclei, which are positively charged,must have enough kinetic energy to overcome their electrostatic force ofrepulsion. This can occur either when one nucleus is accelerated to highenergies by an accelerating device, or when the energies of both nuclei areraised by the application ... Read More

A Biography of Linus Carl Pauling a Chemist and Physicist (273 words, 2 pages)

Linus Carl PaulingLinus Carl Pauling was born in 1901 and died in 1994. He was an Americanchemist and physicist, whose investigations into the structure of molecules ledto discoveries of how chemicals bond.Pauling was born in Portland, Oregon, on February 28, 1901, and educatedat Oregon State College and the California Institute ... Read More

An Argument on Storing or Disposing Radioactive Wastes (1806 words, 8 pages)

Radioactive Wastes Radioactive wastes, must for the protection of mankind be stored ordisposed in such a manner that isolation from the biosphere is assured untilthey have decayed to innocuous levels. If this is not done, the world could facesevere physical problems to living species living on this planet. Some atoms ... Read More

A Personal Recount on What It Takes to Become a Chemist (470 words, 2 pages)

A Chemist Becoming a chemist takes a lot of hard work and discipline. One veryimportan aspect of being a chemist is English, Comunication is of the utter mostimportance (Murphy). As well as having good communication skills, you also needa lot of patience. However, there are many other qualities you will ... Read More

A Description and Function of Catalytic Converters (601 words, 3 pages)

Catalytic ConvertersNotice when a vehicle drives by nowadays, that it is so much quieterthan those loud oldies that pour out the blue smoke. Ever wonder just what isunderneath a vehicle that makes the new ones so much cleaner. It is called acatalytic converter. The main function of a catalytic converter ... Read More

An Analysis of the Book Asimov on Chemistry by Isaac Asimov (1076 words, 6 pages)

Asimov On Chemistry by Isaac AsimovThe Book Asimov on Chemistry by Isaac Asimov is a collection ofseventeen 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. Notall of the books centered on chemistry and like ... Read More

The Study of Alkali Metal Contamination in the Road Side Soil (1212 words, 7 pages)

The Study of Akali Metal Contamination in Road Side SoilIL 3 Experiment 1October 31, 1996AbstractSix soil samples were taken from a roadside that was expected to exhibitcharacteristic of road salt contamination. This contamination is characterizedby the presence of magnesium, calcium and sodium. The relationship between akalimetal concentration and distance from ... Read More

An Overview of the Chlorine Debate in the United States (1456 words, 7 pages)

The Chlorine Debate How White Do You Want It?Chlorine is one of the world's most widely used chemicals, the buildingelement vital to almost every United States industry. We use chlorine andchlorine-based products whenever we drink a glass of water, buy food wrapped inplastic, purchase produce in the supermarket, pour bleach ... Read More

The Historical Development of the Atomic Structure (1224 words, 6 pages)

Historical Development of Atomic StructureYazan FahmawiSept. 30, 1995T3 IBS ChemistryMs. RedmanThe idea behind the "atom" goes back to the Ancient Greek society, wherescientists believed that all matter was made of smaller, more fundamentalparticles called elements. They called these particles atoms, meaning "notdivisible." Then came the chemists and physicists of the ... Read More

An Introduction to the Rutherford’s Gold Foil Experiment (789 words, 4 pages)

Rutherford's Gold Foil Experiment Rutherford started his scientific career with much success in local schoolsleading to a scholarship to Nelson College. After achieving more academichonors at Nelson College, Rutherford moved on to Cambridge University'sCavendish laboratory. There he was lead by his mentor J.J. Thomson convincedhim to study radiation. By 1889 ... Read More

A Lab Experiment: Acetylation of Ferrocene (1615 words, 8 pages)

Acetylation of Ferrocene17. October 1996Experiment 7IntroductionIn this lab we will be utilizing the Friedel Crafts process ofacetylation of ferrocene. Ferrocene is an atom of iron bounded by two aromaticrings. We will use some reagents that will cause the ferrocene to add eitherone acetyl group to an aromatic ring or add ... Read More

An Introduction to the Analysis of Thallium (469 words, 2 pages)

Thallium My element was Thallium. It is atomic number 81. It has 81 protons andelectrons and 123 neutrons. Thallium has a mass of 204.3833 atomic mass units.Its symbol is Tl. It resides in Group IIIA of the periodic table. That is thealuminum family. Thallium has a bluish color after exposure ... Read More

History, Properties, and Uses Technetium (416 words, 3 pages)

TechnetiumNalin BalanNUCL 200Paper due 020797 Atomic Number 43 Atomic Symbol Tc Atomic Weight (97) Electron Configuration -18-13-2History, Properties and Uses (Gr. technetos, artificial) Element 43 was predicted on the basis of theperiodi c table, and was erroneously reported as having been discovered in 1925,at which time it was named masurium. ... Read More

An Experiment: The Sequence of Chemical Reactions (604 words, 3 pages)

The Sequence of Chemical ReactionsDrew SelfridgeDave Allen, Lab partnerInstructorYang February 11, 1997INTRODUCTION This experiment was to recover the most amount of copper after itis subjected to a sequence of reactions. The copper is originally in solidform, but the reactions will turn it into free Cu2 ions floating in solution.The ions ... Read More

Chemistry Essay Examples