Chemistry Essays Examples For College & High School Students in PDF

1489 total results

An Examination of the Element, Radon (582 words, 1 pages)

Radon is earths only naturally produced radioactive gas. It comes from the breakdown of uranium in soil, rock, and water. Radon has no odor, no taste, and can not be seen. When it comes indoors it can become a health hazard. Radon can enter your house through cracks and openings ... Read More

A Discussion of the Experiment Related to the Ability of the Adjustment of Cells in the Environment (630 words, 1 pages)

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration. Diffusion results because of the random movement of particles. The diffusion of water into and out of a selectively permeable membrane is called osmosis. Because of the selectively permeable membrane, nothing but ... Read More

An Experiment Demonstrating the Process of Cell Reproduction (1229 words, 2 pages)

Life exists almost every where on this planet and if we are to attempt to comprehend what life is in all of its magnificence we must look at its simplest forms. Even a cell, the smallest form of life known is extremely complex. All life begins as a single cell. ... Read More

A Research on the Element, Mercury (501 words, 1 pages)

Mercury is the only common metal that is a free-flowing liquid at room temperature. It is slightly volatile in room temperature and becomes solid when subjected to a pressure of 7640 atmospheres. The metal dissolves in nitric or concentrated sulfuric acid. The chief ore is cinnabar Spain and Italy produce ... Read More

A Study on the Element, Manganese (242 words, 1 pages)

Hi, I am Manganese. I am an element discovered in 1774 by the Swedish chemist Johan Gottlieb Gahn. My symbol was devised, coincidentally, by taking the first and third letters in the word manganese. My atomic number is 25, my atomic mass is 54.938, and my density is 7.2. I ... Read More

Characteristics of Acids and Acid-base Reactions (800 words, 2 pages)

In the simple formalism proposed independently by Bronsted and Lowry in 1923, an acid was defined as a proton donor and a base was defined as a proton acceptor. In the simple acid-base reaction shown below, H3O is termed a Bronsted Acid, and HO- a Bronsted Base. In writing organic ... Read More

An Argument for NASA’s Building of International Space Station (892 words, 2 pages)

Is A Space Station Finally "the next logical Step"?If America plans to continue its space exploration program, the question that must be asked next is "Where do we go from here?" America has made major strides in space exploration in this century. We have built enormous rockets that can carry ... Read More

An Interview with Jennifer Wong, a Scientist in the Development of Analytic Chemistry (1917 words, 4 pages)

For my interview, I interviewed Jennifer Wong, a scientist in the development of analytic chemistry. In her occupation she purifies and analyzes proteins, as well as characterizes the proteins. She works for Panox located at 10301 Stellink Houston, TX 77025. For this company Dr. Wong analyzes proteins in order for ... Read More

An Experiment on the Use of Calorimeter to Find the Heat of Fusion of Water (379 words, 1 pages)

Objective The objective of this experiment is to find the heat of fusion of water by using a calorimeter. The calorimeter will be used to melt ice in water to find the heat of fusion.Theory Heat of fusion is known to be the amount of heat that it takes to ... Read More

A Lab Experiment to Measure the Frequency Characteristics of the RL, RC and RLC Circuits (385 words, 2 pages)

Unlike the last lab on RL, RC and RLC circuits, we measured the frequency characteristics of these circuits. We observed the steady-state sinusoidal response of an high-pass RL circuit, a low-pass RC circuit and a band-pass RLC circuit.10.4.1 Steady-State Sinusoidal Response of High-Pass RL CircuitThis part of the lab consisted ... Read More

An Argument Against Teaching the Evolution and Creation in Mankind (1056 words, 4 pages)

For a long time school administrators, teachers, parents and even students haveargued for and against the teaching of either creation andor evolution. Evolution hasbeen taught in many public schools for generations because of the scientific methods andsupport it has as a scientific theory of how we as humans came to ... Read More

A Study on the Element, Bromine (279 words, 1 pages)

The element Bromine, is a red liquid which is explosive at room temperature and has ared brown vapour. It has an atomic number of 35 and an atomic mass of 79.909. Themelting point of Bromine is -7 deg.C and the boiling point is 58 degC with a relativeBromine is a ... Read More

A Definition of Element, Atom, Compound, Molecule, and Trace Element (1031 words, 4 pages)

Define element, atom, compound, molecule, and trace element.ELEMENT a substance that cannot be broken down to other substances by chemical reactions. COMPOUND a substance consisting of two or more elements combined in a fixed ratio.MOLECULE two or more atoms held together by covalent bondsTRACE ELEMENTS those required by an organism ... Read More

An Assessment of the Cosmological Models: Big Bang and Steady State (1273 words, 7 pages)

It is always a mystery about how the universe began, whetherif and when it will end. Astronomers construct hypotheses calledcosmological models that try to find the answer. There are twotypes of models Big Bang and Steady State. However, throughmany observational evidences, the Big Bang theory can bestexplain the creation of ... Read More

A Study on Atom, Its Discovery and Development in Science (1231 words, 2 pages)

In ancient Greek the word atom meant the smallest indivisible particle that could be conceived. The atom was thought of as indestructible in fact, the Greek word for atom means "not divisible." Knowledge about the size and make up of the atom grew very slowly as scientific theory progressed. What ... Read More

An Analysis of the Reaction Time Measurement Experiment (1344 words, 3 pages)

The reaction time of ten subjects was measured. The subjects were asked to catch a ruler ten times under five different conditions. The first condition measured the subject's simple reaction time. Each further condition added an additional stimulus and the reaction times were measured. There was a clear increase in ... Read More

An Overview of Fundamental Principals of Physics in Golf (5034 words, 7 pages)

As anyone who has played a round of golf will attest to, the sport is based around many fundamental principals of physics. These basic laws are involved with every aspect of the game from how a player swings the club to how the ball moves through the air on its ... Read More

The Phenomenon of Superfluidity (1460 words, 3 pages)

"As we shall see, it is generally believed that the phenomenon of superfluidity is directly connected with the fact that the atoms of helium-4 obey Bose statistics, and that the lambda-transition is due to the onset of the peculiar phenomenon called Bose condensation." (Leggett, 1989)This is the phenomenon wherein the ... Read More

The Nuclear Energy and Its Impact on the Environment and Economic Growth (1039 words, 5 pages)

In our society, nuclear energy has become one of the most criticized formsof energy by the environmentalists. Thus, a look at nuclear energy and theenvironment and its impact on economic growth. Lewis Munford, an analyst, once wrote, "Too much energy is as fatal as toolittle, hence the regulation of energy ... Read More

A Report on the Resistance of a Putty (1096 words, 3 pages)

resistance Of a piece of resistance puttyThis investigation is designed to look into the resistance of different materials, in this case, resistance putty in the form of wires, and their conducting capability in different shapes. We must bear in mind though that different thickness and length of the putty used ... Read More

An Analysis of the Aspect of an Experiment (312 words, 1 pages)

An experiment allows the researcher to control the situation being studied. Instead of being a passive recorder of what is going on, the researcher actively does something that he or she thinks will affect the subjects behavior and then observes what happens. These procedures allow the experimenter to draw conclusions ... Read More

Reality According to Hugh Elliot’s Argument Modern Science and MAterialism (1920 words, 3 pages)

What is real? This question has puzzled many what is really real or what is reality. Reality as I shall explain is one that is according to materialism and proven by science. Materialism is defined, as the metaphysical view holding that matter alone is real. This is what Hugh Elliot ... Read More

The Most Notable Accomplishment of Anaxamander of Miletus (726 words, 2 pages)

With his discoveries, Anaxamander of Miletus attempted to bring the realm of the unreal to the world where common man could conceive it. As successor and pupil of Thales of Miletus, Anaxamander worked on the fields of geometry, natural science, and astrology. The culmination of his life attempted to define ... Read More

The Difference Between the Thought Process of Men and Women (1112 words, 2 pages)

Misunderstanding Men and Women Since the beginning of biological time, males and females have had noticeable and unnoticeable differences. These differences have caused conflicts, which have endured time and are still a part of our modern everyday lives. However, the discord has become more defined than what is characterized as ... Read More

An Experiment to Determine the Effects of Temperature on Aerobic Respiration of Germinated Pea Seeds (5358 words, 18 pages)

The first experiment involved examining the effect of temperature on aerobicrespiration of germinated pea seeds. The students testing the effect of temperature, willbe divided into two groups. The first group is Student Pair A. They will test the effect of10C, 20C and 30C temperatures on pea respiration rate. The second ... Read More

The Properties of the Space Phenomenon Called the Black Hole (3076 words, 4 pages)

Every day we look out upon the night sky, wondering and dreaming of what lies beyond our planet. The universe that we live in is so diverse and unique, and it interests us to learn about all the variance that lies beyond our grasp. Within this marvel of wonders, our ... Read More

An Experiment With Multiple Regression and Correlation (745 words, 2 pages)

Multiple regressions and multiple correlations deals with the relationship of one variable compared with a number of other variables. It is similar to the bivariate correlation because it describes the degree of linear relationship between two variables. Though the multiple correlation assigns one variable to be the criterion or dependent ... Read More

A Study on the Element, Lawrencium (512 words, 1 pages)

There are 109 known elements, and of those, 19 of them are artificially produced or synthetic. A synthetic element is made by bombarding atomic nuclei with neutrons or other particles. The element Lawrencium has been made in this manner. While scientists continue to work to create more elements, it should ... Read More

An Analysis of the Experimentation in Glutamate of the Spinal Cord (646 words, 3 pages)

This theory is based on the fact that glutamate, an amino acid present in proteins, can cause neuronal cell death when present in high concentration. The specific evidence for the excitotoxic theory comes from the demonstration of decreased levels of glutamate in ALS spinal cord, with the assumption that glutamate ... Read More

An Overview of an Experiment Related to the Bicycle Crank and Aircraft Drill (331 words, 1 pages)

Parts, Pieces and RemnantsThe two pieces that have been chosen are the bicycle crank and aircraft drill. Reason of chosenshapecolorLife span materialOther useBicycle Crank Color, light weightSmooth rectangularSilver Long, dependableAluminum-------------Aircraft Drill Interesting shapeHelical Silver Life timeSteel Drilling other objectsHaving a knowledge about materials that have been used in an object ... Read More

Chemistry Essay Examples