Chemistry Essays Examples For College & High School Students in PDF

1489 total results

An Experiment on a Hydrate Using Epsom Salt and Cement (274 words, 2 pages)

TheoryA hydrate is something made with water. Epsom salt () and Cement. Epsom salt is made up of magnesium and sulfate. They stack up together and water is trapped between the structure. Cement is made up of portland cement, sand, water and gravel. If something is made with water it ... Read More

A Reflection on an Observation of the Toney Lab (3307 words, 11 pages)

Ethnography of the Toney Lab First stepping into the Toney lab, I had some small idea of what toexpect. I knew, first of all, that one of the projects the lab was workingon was known as the ANSWER project- "Ameyloids for Nanoparticle Synthesis,Wiring, Energy, and Remediation". I had some vague ... Read More

Ethnography of the Toney Lab (1188 words, 3 pages)

3-page Ethnography of the Toney Lab During my time at the Toney lab I learned many things about the workof a scientist, but at the end I was left with as many new questions as Ihad received answers, and regret that I do not have more time with which toexplore ... Read More

A Lab Report on the Purpose of Machines in the Toney Lab (882 words, 3 pages)

Report Instrument, Machines, Methods of Detection Even those outside of laboratories and not involved in Science andTechnogy Studies likely have at least some idea just how prevalent moderntechnology is in the modern scientific laboratory- it is reasonably assumedthat scientists use computers and machines in their line of work. However,to what ... Read More

Lab Field Notes: Observation of the Toney Lab (934 words, 2 pages)

Lab Observation Field Notes Lab Organization The lab I'm observing is known as the Toney Lab (as it is headed byMichael Toney), and is the chemistry wing of the ANSWER project. Theorganization of the entire ANSWER project was somewhat explained to me ingeneral, the Toney Lab did the original Protein ... Read More

An Experiment Conducted to Determine How a Basic or Acidic Environment Affects the Amount of Oxygen Produced by a Catalase (773 words, 5 pages)

Purpose How does a basic or acidic environment affect the amount of oxygen produced by a catalase?Hypothesis If the catalase has a higher acidic environment, then the amount of oxygen produced will decrease because high pH levels cause the hydrogen to decrease therefore the enzyme will denature.Scientific InformationIndependent variable pH ... Read More

The Elements of the Periodic Table (475 words, 2 pages)

The periodic table of elements was first invented by a russian chemist by the name of Dmitri Mendeleev. He put the elements in vertical columns and ordered them in the recurrence of their physical and chemical properties. Although, in his periodic table there were many blank spaces. Later, with the ... Read More

The Graph Theory: History, Overview and Use in Chemistry (2498 words, 10 pages)

Mathematics is truly the epitome of defining a versatile subject in academia. To define its properties would be limiting its potential, however to investigate its presence in different fields of study would be to emphasize mathematics applicability and pertinence in both what can be simply by the naked eye and ... Read More

An Overview of Graphene and Its Importance (1053 words, 4 pages)

Graphene is a word that is so new that it has not been officially entered into popular browser dictionaries like Chrome, Firefox, and Safari. For the past couple of months I have gained an interest in the word and have drawn interest in this quote said by James Hone, a ... Read More

A Science Final Paper on Aluminium (408 words, 2 pages)

Science Final AluminumBackground Information Aluminum, with the chemical formula and common name of Al, showed up in our test tube as a rather big bar of metal. We knew that it was metal because it had a metallic luster. Our first idea was zinc or iron because of its color. ... Read More

The Basic Properties of Water (466 words, 2 pages)

Water is a very unique molecule, with many important properties, of theseproperties, some of the more important ones include Its polarity, itsability to form hydrogen bonds, and its ability to act as a solvent andmedium of reaction for many chemicals. Water is a very polar molecule,meaning that its electrons aren't ... Read More

Carbon Cycle, the Cycle of a Component of Life (474 words, 2 pages)

Carbon cycle speech, the cycle of a component of life.Carbon is a very important element for living things. Carbon-based molecules are the basic building blocks of humans, animals, plants, trees, soil, and some greenhouse gases. Carbon is very important and must be used and processed in multiple places at once, ... Read More

Solubility Product Constants (2132 words, 10 pages)

1.) IntroductionQualitative analysis is the identification of the chemical compositions of samples based on their unique combinations of properties. If, for instance, a cation reacts with a set of anions, to litmus tests, and to flame tests in ways that no other cation likely does, then a solution that reacts ... Read More

A Laboratory Procedure of Deducing the Value of Avogadro’s Number From the Interactions of Water With Stearic Acid (1482 words, 6 pages)

1.) IntroductionAvogadros number is the bridge between the macroscopic measurement of substances, in terms of grams, and the infinitesimal scale of the atomic mass unit. Though its generalized (and most applicable) definition is the number of particles of a substance in its gram molecular weight, this constant has a history ... Read More

A Study of The Effects of Substrate Concentration on Enzyme Activity (3377 words, 16 pages)

Purpose Personal EngagementSubstrate concentration is an important factor which affects the activity of enzymes. I became interested in the effect of substrate concentration on enzymes during our classroom examinations of heat and pH on enzyme activity. Substrate concentration was one of factors that I had explored and researched the least, ... Read More

The Thermodynamic Properties of Cobalt Complex Dissolution Limited by Deviation of the Beer’s Law in the Spectrophotometric Data (1797 words, 11 pages)

1.) IntroductionBeers law quantifies the relationship between the concentration of a certain substance in solution, and the amount of light this substance absorbs at a given length traveled by the incident light. In its general form, this law equates the product of incident light path length, concentration of the substance, ... Read More

A Lab Experiment to Determine Which Solutions are Isotonic to Eggs (855 words, 5 pages)

Biology Osmosis LabHypothesis(Egg Placed in Water)If the egg is placed in distilled water, then the mass of the egg will increase because the concentration of water inside the egg is lower than the concentration of water in the distilled water and due to this difference in concentration, the water outside ... Read More

An Experiment Testing the Different Inheritance Patterns in the Drosophila Fruit (2064 words, 9 pages)

IntroductionGregor Mendel, with his extensive experimenting of pea plants and the ways in which they inherited traits, established two laws of inheritance, which are now the guidelines of modern day genetics and inheritance patterns that are widely known and used today in studies of genetics. According to the in-class lectures ... Read More

An Experiment to Recover Purified Benzoic Acid Using Extraction and Recrystallization (687 words, 4 pages)

Results and CalculationsTable 1-Shows the recorded masses of the Benzoic Acid etc. from part one of the experimentInitial Mass of Benzoic Acid (mg)500Mass of Filter Paper (mg)180Mass of Filter Paper Crystals (mg)545Mass of Recovered Benzoic Acid (mg)365Table 2-Shows the recorded masses of the Benzoic Acid etc. from part two of ... Read More

An Experiment to Determine the Geometry of Nickel Complexes by Measure of Magnetic Susceptibility (1207 words, 7 pages)

Procedure-Preparation of Ni(NCS)2(PPh3)2A 0.656 gram (2.26 mmol) sample of Ni(NO3)26H2O and 0.798 grams (8.21 mmol) of KSCN were combined in a 100-mL round-bottomed flask. 30 mL of n-butanol was added and the mixture was heated under reflux for an hour. The mixture was then air-cooled and then gravity filtered. The ... Read More

An Experiment on the Model System for Vitamin B12 (824 words, 5 pages)

IntroductionVitamin B12 is a vitamin with many uses in the human body. It is unique as it in the only organometallic complex found in nature. Because Vitamin B12 is an organometallic complex, most of the reactions occur by the cleavage of the cobalt-carbon bond. By cleaving this bond, a methyl ... Read More

An Experiment Analyzing the Reaction of Crystal Violet with Sodium Hydroxide (724 words, 7 pages)

Chemistry 102L Data SummaryEXPT.Chemical Kinetics Reaction of Crystal Violet with Sodium Hydroxide14Figure 1. This graph shows a linear relationship between Absorbance and various concentrations of Crystal Violet solution. There is a strong positive linear correlation between the two variables. The R2 value is .9857 which shows this is a very ... Read More

Visualizing Carrier Motion in Individual Nanostructures Using Femtosecond Pump-Probe Microscopy (313 words, 2 pages)

Visualizing Carrier Motion in Individual Nanostructures Using Femtosecond Pump-Probe MicroscopyDr. John Papanikolas is a Professor at The University of North Carolina at Chapel Hill. He went to Bowdoin College for undergrad and received his Ph. D. from The University of Colorado at Boulder. He later became a Postdoctoral associate at ... Read More

An Examination of the Vanadium Complexes (1127 words, 6 pages)

ResultsIn this experiment two different 5 coordinate vanadium complexes were synthesized using a redox method. The oxidation state of Vanadium was reduced to 5 to 4 in both complexes. The first synthesized was VO(acac)2 (1.354 grams, 77 yield). Initially, this solution was an orange, progressing to a dark orange and ... Read More

An Experiment on the Molecule Ferrocene Through the Use of NMR and FTIR (775 words, 5 pages)

AbstractThis experiment synthesized and characterized the molecule ferrocene by use of NMR and FTIR. In the NMR spectrum, a singlet at 4.11 ppm is found indicating that all hydrogens are chemically equivalent. This corresponds with the structure of ferrocene as the 5-coordination of the cyclopentadienyl ligands would correspond with all ... Read More

An Experiment Analyzing Three Standard Ethanol Solutions (1558 words, 13 pages)

Experimental Procedures-Part IPreparation of Standard Ethanol SolutionsFor this experiment, three solutions of ethanol are prepared. The solutions of ethanol are 2, 4 and 6 ethanol in pentanol solutions. To prepare the 6 ethanol in pentanol solution a 1.0 mL pipet and a pipet bulb were used. Ethanol was drawn up ... Read More

An Experiment to Determine Plant Pigments Using Reverse Phase Liquid Chromatography (1068 words, 7 pages)

Results and CalculationsThe experiment began by taking 10 mL of spinach extract and separating it in a separatory funnel by using acetone. Before the acetone was added, 10mL of NaCl was added begin the separation. After the addition of NaCl a total of 5 separations with acetone were performed, adding ... Read More

An Experiment on Finding the Molecular Weight of a Myoglobin Molecule (1764 words, 8 pages)

IntroductionThe goal of this experiment is to determine the molecular weight of a Myoglobin molecule. A Gel Permeation Chromatography setup will be used to determine the molecular weight. The GPC column we will be using has G-75 as a stationary phase. This is a good stationary phase as it has ... Read More

An Experiment on Para-Methoxycinnamic Acid Using a Wittig Reaction (513 words, 3 pages)

Purpose to prepare para-Methoxycinnamic Acid by using a Wittig reaction. Procedure 2.3 mL of 1.2 M NaOCH3 was placed into a dry round-bottomed flask with a stir bar, making sure to cap it to minimize exposure to moisture. The solution was then stirred. 0.50 mL (2.5 mmol) of triethylphosphonoacetate was ... Read More

An Experiment to Determine the Reaction of Crystal Violet with Sodium Hydroxide (1103 words, 7 pages)

AbstractThe purpose of this experiment was to determine individual reaction order by graphing data according to different integrated rate law formats. It was also to observe the slow decomposition visually thereby gaining first hand evidence of reaction rate. The results were a decrease in the concentration of crystal violet as ... Read More

Chemistry Essay Examples