Chemistry Essays Examples For College & High School Students in PDF

1489 total results

A Description of Respiration on the Movement of Gases To Provide and Eliminate Waste Products (1004 words, 4 pages)

Respiration The movt of gases to provide E (O2) eliminate waste products (CO2).1. Ventilation movt of O2 in CO2 out of the alveoli.2.Ex of gases across the alv cap membrane (O2 to pul cap CO2 t o alv).3. Transport of gases in the blood.4.Ex of gases at the tissue level.Alv ... Read More

An Argument against India’s Nuclear Testing (821 words, 2 pages)

India Vs. PakistanGlobal Warfare Indias Nuclear TestingWithin the last decade, India and Pakistans ongoing struggle with Kashmir has peaked due to nuclear warfare testing. The testing not only aggravated the situation in Southern Asia, but has also worsened the global condition. Tension with Pakistan, lack of support from the United ... Read More

An Analysis of the Experiment on Bean Growth (880 words, 2 pages)

For this experiment, I needed to plant some beans. I did this using plastic planting cups, potting soil, and beans provided by my professor. I also would need to set up my experiment, which I did by building saran wrap tee-pees. I used dowel rods to construct the basic frame ... Read More

Using Water Pressure in Hydroforming the Futuristic Creation of Steel Framing (1459 words, 4 pages)

Hydroforming the futuristic creation of steel framing using water pressureSince the beginning of the horse drawn carriage people have relied on some sort of vehicle to help transport them from one place to another. Although people may have taken these carriages for granted there was a definite science to the ... Read More

A Report on Lucy, a Member of the Australopithecus Afarensis Species (313 words, 2 pages)

Lucy was found by Donald C. Johanson Ph.D. and Tom Gray on November 30th 1974, inthe Hadar Region in Ethiopia and was named after the song Lucy in the Sky WithDiamonds. She is special because she lived just less than 3.18 million years and becauseabout 40 of her skeleton was ... Read More

The Role of Enzymes in Chemical Reactions Occurring in Cells (1186 words, 3 pages)

Every minute there are thousands of chemical reactions occurring in cells that are controlled by enzymes. (Vodopich) Enzymes are biological catalysts that speed up chemical reactions. As catalysts, enzymes lower the amount of energy needed to trigger a reaction. Enzymes are proteins with their own shapes determined by amino acid ... Read More

The Phenomenon of Ferromagnetism (1235 words, 4 pages)

1.1 PRELUDEThe phenomenon of ferromagnetism is associated only with the solid state of matter like iron, nickel, cobalt and some rare earth metals and their alloys. Thus, up to now, there is no intrinsic homogeneous fluid having ferromagnetic properties although, theories admit the possibility of ferromagnetism in the liquid state, ... Read More

A Report on the Process of Making Silk (736 words, 1 pages)

Do you know the process that goes into making silk? Many people over look this fine, luxurious garment. When I first heard that we had to do an I-search, I was overwhelmed by the choices. I made many changes before finally settling on this topic. When I first though of ... Read More

A Report on a Project to Determine the Approximate Value of I for Red Light Using a Diffraction Kit (428 words, 1 pages)

Aim To determine the approximate value of l for red light using a diffraction kit.Theory Diffraction of light is one explanation of the wave theory of light. Francesco Grimaldi first observed this type of behvaiour from light. However, Thomas Young was the scientist that was able to derive a mathematical ... Read More

A Report on Chemical Reactions: The Heart of Chemistry (2099 words, 4 pages)

Chemical reactions are the heart of chemistry. People have always known that they exist. The Ancient Greeks were the firsts to speculate on the composition of matter. They thought that it was possible that individual particles made up matter. Later, in the Seventeenth Century, a German chemist named Georg Ernst ... Read More

An Introduction to the Carbohydrates and the Sugar Experiment (1312 words, 3 pages)

IntroductionCarbohydrates are molecules that contain Carbon, Hydrogen, and Oxygen. The most basic sugar- carbohydrate is the monosaccharide. Carbohydrate molecules are categorized by the number of carbons present in the molecule. Glucose, the most common monosaccharide has six carbons per molecule, which is called a hexose. Carbohydrates also have a 21 ... Read More

An Analysis of a Controversial Experiment with Shock Treatments by Milgram (469 words, 2 pages)

The most famous experiment Milgram conducted was also his most controversial. The issue dealt with the people's right to know on what heshe is being studied. On the surface, the experiment looked legit and totally scientific. Two people were brought in at a time and each would draw from a ... Read More

A Description of Silicon and Oxygen as the Two Most Common Chemical Elements in the Earth’s Crust (546 words, 1 pages)

Silicon and oxygen, the two most common chemical elements in the Earth's crust, combine as silicon dioxide to form the mineral quartz. SEDIMENTARY ROCKS, are Rocks that are formed by the compaction of sediments or by the crystallization of the dissolved minerals. Quartz is the most abundant mineral in the ... Read More

An Overview of the Experiment of Reactants in Chemistry (1285 words, 6 pages)

THE ACTUAL WEIGHING OF REACTANTS OFTEN PROVES IMPRACTICAL OR INCONVENIENT. THIS IS ESPECIALLY TRUE IF REACTANTS ARE GASES, LIQUIDS, OR VERY REACTIVE.HOW CAN WE DELIVER KNOWN WEIGHTS OF REACTANTS WITHOUT WEIGHING THEM FIRST?CONSIDER HNO3 NaOH NaNO3 H2ONEITHER NITRIC ACID, NOR SODIUM HYDROXIDE CAN BE WEIGHED EASILY. WHY?HOWEVER, SOLUTIONS OF KNOWN ... Read More

An Argument for Hydro Power as an Alternative Power Source (290 words, 1 pages)

My alternative power source is Hydro power. It comes from water. The oldest and simplest form was the water wheel first used in ancient Greece for grinding grain. The water wheel design was changed by Jean Victor Poncelet in the 18th century. He made the blades curved which raised the ... Read More

A Description of the Premenstrual Syndrome or PMS (1487 words, 2 pages)

For three weeks out of every month youre energetic, happy, upbeat and even- tempered, then it happens. A week before your period begins the change into a mad women happens. Your mood swings form frustration to irritability, to downright anger, even depression. Your breasts become tender to the touch, and ... Read More

A Description of Oxygen as One of the 92 Known Elements (2136 words, 4 pages)

Oxygen is one of the 92 known elements. An element is a substance that cannot be decomposed into a simpler substance by any simple means. Each of the 92 naturally occurring elements are therefore one of the fundamental materials from which everything in the Universe is made.On August 1,1774, Joseph ... Read More

A Description of Chemical Reactions as the Heart of Chemistry (420 words, 2 pages)

Chemical reactions are the heart of chemistry. People have always known that they exist. The Ancient Greeks were the first to speculate on the composition of matter. They thought that it was possible that individual particles made up matter. Later, in the Seventeenth Century, a German chemist named George Ernst ... Read More

A Look at the Forces That Play in Balancing Water Contents Between Cells (621 words, 3 pages)

Search For Papers By Keyword Paper Store1. a) Bulk movement is the overall movement of a fluid. The molecules allmove in the same direction. Diffusion however is the random movement ofmolecules which usually results in a fairly even distribution. In otherwords the movement is not guaranteed to move in one ... Read More

An Experiment on the Recovery Rate of Male and Female Bodies (601 words, 2 pages)

THE RECOVERY RATE OF THE MALE IS SIGNIFICANTLY FASTER THAN THAT OF THE FEMALE. This experiment is designed to test whether or not gender is a major contributing factor to the recovery heart rate in humans. Most would assume that the male heart rate would be considerably faster in recovery ... Read More

Understanding the Natural Phenomenon of Super Conductivity (521 words, 1 pages)

Super conductivity is a natural phenomenon in which certain materials such as metals, alloys, and ceramics, can conduct electricity without resistance. These materials are what we call superconductors. In a superconductor, once the flow of electrons begins, it essentially goes on forever, making it an important material to humans. Superconductivity ... Read More

An Overview of the Element Calcium (Ca) (217 words, 1 pages)

Calcium Element symbol...CA Atomic weight...40.08Element number...20 Number of protons...20Density at...68? F Boiling point...2,264?FCalcium was discovered by Sir Humphrey Davis in 1808. Calcium is a mineral found in abundance in the Earths outer crust. It is the fifth most abundant mineral in the Earth crust. Calcium is considered a major mineral ... Read More

A Brief Look at Transition Elements (404 words, 1 pages)

Transition Elements, series of chemical elements that share similar electron orbital structures and hence similar chemical properties. The transition elements are commonly defined as the 30 elements with atomic numbers 21 to 30, 39 to 48, and 71 to 80.The transition elements exhibit multiple valences or oxidation states typically ranging ... Read More

A Chemistry Independent Study of Gas Laws (2377 words, 5 pages)

Chemistry Independent Study Gas Laws Since the days of Aristotle, all substances have been classified into one of three physical states. A substance having a fixed volume and shape is a solid. A substance, which has a fixed volume but not a fixed shape, is a liquid liquids assume the ... Read More

A Description of the Science of Organic Chemistry on Our Physical Environment (1484 words, 5 pages)

Chemistry has been called the science of what things are. Its intent is the exploration of the nature of the materials that fabricate our physical environment, why they hold the different properties that depict them, how their atomic structure may be fathomed, and how they may be manipulated and changed.Although ... Read More

Haber’s Development of a Method for Synthesizing Ammonia Using Atmospheric Nitrogen (1183 words, 3 pages)

During the first decade of the twentieth century the world-wide demand for ammonia for use in fertilisers (in the form of nitrates) and in the production of explosives for use in mining and warfare could only be satisfied on a large scale from deposits of guano in Chile (2). Though ... Read More

The Chemical Equation of the Development of Film in Photography (929 words, 3 pages)

Photography is a very complex form of art, which uses standard chemicals and scientific equations. It is a chemical reaction, which occurs when light hits a film or paper emulsion. An emulsion is part of the film or paper, which is very sensitive to light. This is also the part ... Read More

An Overview of the Measurement of pH in a Substance (512 words, 1 pages)

pH is the measure of H (a proton) a concentration of a solution. In order to understand pH, a scale has been designed, this scale ranges from 0 to 14. Anything from 0 to 6.99 is acidic, a substance that increases hydrogen ions concentration in a solution, such as lemon ... Read More

An Experiment to See How Fast Organisms and Materials Decay Under Certain Conditions (328 words, 1 pages)

Purpose To see how fast organisms and materials decay under certain conditions.Procedure We gathered 4 2-liter plastic pop bottles and cut them to assemble the drawing below. Near the bottom we placed a siv to let juices drain through into the bottom 2-liter. Then we stacked materials and organisms on ... Read More

A Brief Look at the Element Radon (572 words, 2 pages)

Radon is an element that is on the periodic table of elements. It is a member of the family called the noble gases, which is group number 18. Radon is a gas. It is a gas at 298 k. it is the heaviest known mononuclear gas at that temperature. Radon ... Read More

Chemistry Essay Examples