Chemistry Essays Examples For College & High School Students in PDF

1489 total results

Salty Water Influences the Quantity and Quality of Plants (603 words, 2 pages)

Abstract Salt solutions in water, and fed to plants, will stunt the growth of the plants. This was tested by feeding different concentrations of salt water to several Brassica rapa plants. The more salt in the solutions, the less the plants grew, and if there is enough salt in the ... Read More

An Introduction and an Analysis of the Soil Compaction (931 words, 2 pages)

Introduction The ability of soil to sustain a plant's growth is attributed to a number of different factors such as level of compaction, nutrient storage as well as air and water penetration. Each of these factors affect the overall health and growth rate of the plant with soil compaction limiting ... Read More

A History and Role of the Doppler Radar (478 words, 1 pages)

Doppler Radar is used by scientists to monitor the weather around the country. There are 160 radar sites that make it possible to warn people about upcoming sever weather systems. Currently Doppler Radar can provide an eleven minute warning for an upcoming tornado. This technology is a tool that can ... Read More

The Influence of Industrial Revolution on the Development of Vaccines (675 words, 1 pages)

The Industrial Revolution of the eighteenth and nineteenth centuries saw the advent of gross urbanization of factory towns and cities. Due to advancements in areas such as textiles and machinery, many people flocked from the countrysides of Europe (particularly Britain) to cities where they sought work was factory operators and ... Read More

A Report of an Experiment to Determine Absolute Zero Using Charles Law (775 words, 3 pages)

Using Charles Law To Determine Absolute Zero Tuesday 7th of December Introduction One of the variables that affects the volume of a gas is the temperature of the gas and its surroundings. This volume-temperature relationship is quantified in Charless law. The law states that as the temperature of a gas ... Read More

The Element Carbon (1056 words, 2 pages)

Carbon, an element discovered before history itself, is one of the most abundant elements in the universe. It can be found in the sun, the stars, comets, and the atmospheres of most planets. There are close to ten million known carbon compounds, many thousands of which are vital to the ... Read More

An Experiment to Calculate the Coefficient of Linear Expression of a Metal (751 words, 5 pages)

Introduction Most solid materials expand upon heating and contract when cooled because it undergoes a change in the energy state of its molecules or atoms. According to the atomic perspective, the average vibrational amplitude of an atom increases as the temperature rises. Each material has a property called coefficient of ... Read More

Bubble Lab (347 words, 2 pages)

Bubble Lab -Observations- The bubble reflects the light from the ceiling lights. The bubble is transparent. If you shake the bubble wand then the bubble also shakes. All around the bubble there is a swirling oil like substance. It smells like soap. The bubble is very sensitive to any kind ... Read More

An Analysis of the Chemistry Experiment (656 words, 2 pages)

Background Information A simple pendulum, such as a rock hanging from a piece of string or the inside of a grandfather clock, consists of a mass (the rock) and a support (the piece of string). When the mass is moved a small distance away from its equilibrium point (the bottom ... Read More

Acids and Bases (739 words, 1 pages)

Jennifer KingPeriod 3April 28, 2001 Acids and Bases Modern understanding of acids and bases began with the discovery in 1834 by the English physicist Michael Faraday that acids, bases, and salts are electrolytes. That is, when they are dissolved in water, they produce a solution that contains charged particles, or ... Read More

The Hypothesis That Sonar Testing Has Detrimental Effects on Marine Life (501 words, 1 pages)

Scientific Hypothesis Experiement Sonar testing has detrimental effects on marine life "Surveillance Towed Array Sensor System (SURTASS) Low Frequency Active (LFA) sonar is the U.S. Navy's newest must-have defense technology." The Navy claims that LFA sonar will be able to detect today's "quieter" submarines so reliably that it plans to ... Read More

Cellular Metabolism and Fermentation Through Glycolysis (948 words, 2 pages)

CELLULAR METABOLISM AND FERMENTATION Glycolysis, the Universal Process Anaerobic Pathways Aerobic Respiration Glycolysis, the Universal Process Nine reactions, each catalyzed by a specific enzyme, makeup the process we call glycolysis. ALL organisms have glycolysis occurring in their cytoplasm. At steps 1 and 3 ATP is converted into ADP, inputting energy ... Read More

The History of the Atom (332 words, 1 pages)

THE HISTORY OF THE ATOM I am doing my project on the history of the atom. The atom was not just thought up overnight it took thousands of years of research and experimenting, but was finally finalized bty Dalton. Dalton was curious about many things but most of all he ... Read More

An Analysis of the Effect of Temperature on Air Pressure (1271 words, 3 pages)

THE EFFECT OF TEMPERTURE ON AIR PRESSURE My project consists of a series experiments to determine the effect of air pressure in a given environment at various temperatures. The experiments I chose to conduct are 1) Heat an ordinary pop can on a hot plate and then putting the can ... Read More

A Lab Report on the Proces of Osmosis and the Differences in the Speed of Its Effects Based on the Gradient (784 words, 2 pages)

Introduction Osmosis is the diffusion of water across a selectively permeable membrane in living organisms from a hypotonic to a hypertonic solution. (Raven Johnson, 2000) The speed of which one substance diffuses from one area to another is based upon the free-energy gradient between the two areas. For example, if ... Read More

The History of Eyeglasses (1275 words, 5 pages)

Invention of Eyeglasses Many inventions have changed the way that people all over the world live. One invention that has helped people with bad eyesight is eyeglasses. The eyeglasses help people who are farsighted and nearsighted. Originally, eyeglasses were invented for one person, but grew to helping millions of people ... Read More

An Arguments in Favor and Against Human Cloning (776 words, 2 pages)

Human cloning is the ability to take a cell from a human donor, take out the nucleus and place it in a unfertilized human egg. Finally the egg is placed into a female body in which the egg delelvops into a younger duplicate of the nucleus donor (sex depending on ... Read More

The Different Ways of Capturing Energy in Water (1037 words, 2 pages)

Hydro Dams in Washington There are many different ways to harness the energy in water. The most common way of capturing this energy is hydroelectric power, which is just electricity created by falling water. The reason we are now searching for the new ways of energy particularly the way of ... Read More

A Experiment of Determination of Creatinine Concentration in 24 Hour Urine Samples (1084 words, 3 pages)

Experiment showing the determination of Creatinine concentration in 24-hour urine samples. Aim The aim of the practical is to test the following hypothesis The amount of creatinine found in a persons 24-hour urine sample bears a direct relationship to the body mass of that person. METHOD Materials 1)5 urine samples ... Read More

A Report of Brain Cell (979 words, 4 pages)

Brain cell research offers hope for Alzheimer's NEW YORK, Feb 28 (Reuters Health) -- Taking cells from a region of the brain known as the hippocampus, an international team of researchers have grown functional brain cells in lab cultures. The findings may have profound implications for restoring damaged or degenerative ... Read More

A Description of the Science Report on Volcanoes (900 words, 2 pages)

Science Report on volcanoes Would you want to live within ten miles from a volcano? Not knowing when its going to erupt. I just called in the radio station and I was caller number ten. I got to choose one of three places to live, the options were next to ... Read More

An Argument Against Human Cloning (484 words, 1 pages)

Two of a Kind Within the past few decades, the world has experienced an incredible boom in technology, leading to such things as space travel, the internet, and wireless phones among others. The field of medicine has been no exception. With vaccines that have almost completely wiped out tuberculosis and ... Read More

An Argument Against Today’s Idea of ‘Playing God’ (1696 words, 3 pages)

It is the year 2010. As you pick up your daily issue of The New York Times, you begin to read some of the articles on the front page. The top story of the paper reads, "Germany Wins All Gold Medals at the Olympic Games Is Cloning in Competitive Events ... Read More

An Analysis of the Manhattan Project in History (2811 words, 4 pages)

The Manhattan Project was one of the most ambitious scientific efforts in the history. It out shadowed anything previously undertaken a crew of over 100 000 37 installations in 13 states (some, like Hanford complex, the size of a small tows) more than a dozen of university laboratories from New ... Read More

A Look at a Blind Spot Experiment on My Eyes (340 words, 1 pages)

On figure one of the blind spot experiment, when the black dot fell into my blind spot, it was replaced by white space. The reason behind this I believe is because my eyes are receiving overwhelming evidence that whatever is in my blind spot is probably white space because the ... Read More

The Life and Accomplishments of Robert Wilhelm Bunsen (328 words, 1 pages)

Robert Wilhelm Bunsens name was famous for a a few discoveries in the field of chemistry. For example you might recognize Bunsen from the lab device, the Bunsen Burner. He also helped invent the spectroscope and discovered spectrum analysis. And at the beginning of his career, he discovered that iron ... Read More

AN Introduction to the Hormon Replacement Theory (2367 words, 3 pages)

Think of a thoroughbred, what comes to mind? A fast and graceful racehorse right? Now imagine the thoroughbred with knees the size of watermelons dripping blood and puss because she is mistreated at a PMU farm. An ex-PMU producer tells the fate of this mare (one he was partial to) ... Read More

An Experiment on Investigating Onion Cells with a Microscope (314 words, 1 pages)

Aim To investigate onion cells and to practise using the microscope. Materials Equipment - Glass slide - Cover slip - Onion layer (1 cell thick) - Iodine stain - Microscope - Water syringe Method 1) If necessary, carefully clean the cover slip and glass slide (always hold the glass by ... Read More

An Overview of the Concept of Elements (1514 words, 3 pages)

At first glance, nature appears to consist of countless numbers of very different materials. The world thus appears to be an extremely complex mixture of many different materials. But philosophers and scientists have long held another view of the world. They have found it difficult to believe that nature is ... Read More

An Argument in Favor of the Benefits of Cloning (1211 words, 2 pages)

To Clone, Or Not To Clone? Did you ever imagine having a child that is the exact replica of you? Did you ever imagine of having the cure for heart disease or cancer? Well, these fantasies are not far from reach. The way we could reach these fantasies is through ... Read More

Chemistry Essay Examples