Chemistry Essay Examples and Topics. Page 2

322 samples

The Chemical Reaction of Methane and Oxygen Gases

The chemical compositions of the reacting elements or compounds dictate the nature of the reaction. The chemical reaction entails the combustion of methane gas in the presence of oxygen gas, which are the reactants.
  • Pages: 1
  • Words: 318

Determination of M2+ Ions in Mineral Water

Titrometry is one of the techniques that chemical analysts use to determine the concentration of metal ions in mineral water. A buffer is necessary to provide suitable pH for the complexing of EDTA with metal.
  • Pages: 3
  • Words: 1022

Substitution Reactions of Alcohols

1 The SN2 substitution reaction occurs when the attacking atom or group is a strong nucleophile that hits the electrophile from the rear end thereby ousting the leaving group.
  • Pages: 10
  • Words: 2743

The Physical and Chemical Properties of Water

Considering the structure in the figure above, it is evident that a molecule of water has a line of symmetry that can be traced through the water molecule, acting as a bisector of the angle [...]
  • Pages: 2
  • Words: 572

Characteristics of Radioactive Emission

The goal of this experiment was to illustrate various parameters of radioactivity, including the plateau of a Geiger-Muller counter, finding the resolving time of a Geiger tube, verifying the inverse square law, measuring the penetrating [...]
  • Pages: 5
  • Words: 1479

Polymer and Fiber-Reinforced Concrete

The objective of this report is to evaluate the properties, limitations, and prospects of future applications of fiber-reinforced concretes and polymer reinforced concretes.
  • Pages: 40
  • Words: 11030

Aqueous HCl Solution Preparation

To prepare 500 grams of a 5% aqueous HCl solution, the chemist must have some basic information about the solute and the solution.
  • Pages: 2
  • Words: 668

Breakdown of the Periodic Table

The Periodic Table is the tool for arranging elements based on the correlation between the periodic function of their atomic numbers and the properties of the elements in question.
  • Pages: 2
  • Words: 725

The Photosynthesis Rate of Waterweed

In this experiment, it was hypothesized that the rate of photosynthesis rises with an increase in the concentration of carbon dioxide and went on to test the hypothesis.
  • Pages: 10
  • Words: 2767

Swiffer Wet Refills Materials

These important steps are the selection of the fibers which can be used for the production of the wet mopping cloths; the process of laying the chosen type of fibers to make a definite type [...]
  • Pages: 7
  • Words: 1913

Polypropylene Concept in Chemistry

The majority of commercial PP is isotactic and possesses a transitional intensity of crystallinity amid the one of high-density polyethylene and low-density polyethylene.
  • Pages: 20
  • Words: 5166

Polymer Based on Ethylene Glycol – Chemistry

Ethylene glycol polymers are products of additive reactions between ethylene oxide and ethylene glycols. The boiling point and state of ethylene glycol polymers are proportional to molecular weight.
  • Pages: 20
  • Words: 5450

Drug Analysis: Amphetamine and Methamphetamine

Analysis of amphetamine and methamphetamine is carried out in a series of steps that entails employment of numerous tests for conclusive identification of this group of stimulants.
  • Pages: 3
  • Words: 861

Analysis of Lab: Heat of Fusion of Water

In this experiment, information was collected regarding the mass of the calorimeter and bowl, the mass of the empty calorimeter, the water, and the contents: all raw data are shown in Table 1.
  • Pages: 2
  • Words: 798

Three Types of the Hyaluronic Acid

In the human body, hyaluronic acid performs the crucial function of retaining moisture in the tissues and acts as a lubricant for the joints. Even though hyaluronic acid is a component of the body, the [...]
  • Pages: 3
  • Words: 783

The History of European Alchemy

The birth of this concept was found through the merger of the philosophies of Aristotle with Christian theology and for centuries predominantly found in Europe of the middle Ages and Renaissance.
  • Pages: 20
  • Words: 5823

Electrochemical Methods of Analysis

The choice of method is determined by the chemical compound to be analyzed, the time available, the level of accuracy needed and the available time.
  • Pages: 2
  • Words: 632

Sugar Results: Experiment on Chocolate

When the concentration of glucose was high, the color and odor of the reaction mixture were darker and more intense, respectively, due to a larger amount of products formed.
  • Pages: 2
  • Words: 434

Pesticides’ Effects on Rivers and Streams

Once the pesticides are in the water, they affect aquatic life and the entire organisms in the food chain. Water is a basic need for all living organisms, and the harmful effects of pesticides in [...]
  • Pages: 9
  • Words: 2528

Plasma Discharge and its Examples

Here, Chang, Lawless and Yamamoto argue that plasma is the fourth state of matter, which occupies 99% of the universe and consists of particles known as ions, neutrons, and neutrals, which exist in a gaseous [...]
  • Pages: 10
  • Words: 2752

Nuclear Magnetic Resonance Spectroscopy

Although the use of proton NMR has been applied for the determination of trace components such as the residual hydrogen in D2 O, the mixtures of dinitrotoluene, and the mixtures of drugs, its great merits [...]
  • Pages: 13
  • Words: 3653

Nanofabrication. Bottom-Up vs. Top-Down Method

Some of the chemical processes used in the bottom-up approach include sol-gel process, the reaction of molecules in a flask, reverse microemulsion and flame synthesis, which have been used to make silica nanoparticles, nanozeolite, nanocatalysts [...]
  • Pages: 2
  • Words: 606

The Effect of Inhibitors and Temperature on Enzyme Reactions

Enzymes are described as biological proteins which accelerate the rate of reaction of a chemical substance, while inhibitors are elements which reduce the speed of catalyzed reaction of enzyme through connecting into the enzyme and [...]
  • Pages: 4
  • Words: 1194

The Reactive Oxygen Species and Oxidative Stress

In the case of mitochondria, this is explained by the fact that in the respiratory chain there is a "leakage" of electrons from I and III mitochondrial enzyme complexes, due to which about 2 5% [...]
  • Pages: 1
  • Words: 395

Glutathione Protection from Toxic Compounds

The peculiarity of the first stage of synthesis is the creation of a peptide bond by joining not the - but the -carboxyl group of glutamic acid to the amino group of cysteine.
  • Pages: 7
  • Words: 1859

Framework Polymers: Gas Absorption Capacity

The use of chlorine atoms as components of the polymer framework was also shown in Mart n et al; the presence of chlorine allowed a reduction in the total carbon fraction of the polymer, resulting [...]
  • Pages: 5
  • Words: 1388

Porous Materials in Industrial Chemistry

To put it another way, despite the higher gas trapping capacity of COP-130, the retention rate of this substance in the organic framework was higher for COP-140, in which it was trichloromethane used as a [...]
  • Pages: 3
  • Words: 938

Lysine: Chemical Formula and Role in the Body

Lysine also plays a vital role in the immune system, as it helps the body fight off viruses and bacteria. It is also essential for hormone production, as it helps the body produce hormones such [...]
  • Pages: 1
  • Words: 287

The Miller-Urey Experiment and Findings

The researchers note that their experiment was designed to mimic the primitive earth's atmosphere and not the ideal conditions required for the development of amino acids. At the experiment's conclusion, the solution in the flask [...]
  • Pages: 3
  • Words: 906

The Discussion of a Radioactive Isotope

A radioactive isotope is one that has an unstable nucleus, meaning that it can break apart and release a lot of energy. Fission releases energy by splitting the nucleus of a heavy element into two [...]
  • Pages: 1
  • Words: 359

The Heat of Dissolution and Neutralization Reaction

The colorimetric method of analysis is used to determine the heat released during a chemical or physical process: the heat released in such reactions is transferred to the water by the change in temperature, of [...]
  • Pages: 3
  • Words: 1152

Laser-Induced Breakdown Spectroscopy: Instrumental Facility

In fact, the LIBS device has a two-pulse characteristic: the first laser pulse ablates the detachment of matter from the substance and the accompanying heating, and the subsequent second pulse is aimed at additional excitation [...]
  • Pages: 2
  • Words: 620

Spectrophotometers: Invention and Development

Jensen explains that spectrophotometers can be used to make measurements where previous methods were unable to, like measuring the amount of light absorbed by a substance at different wavelengths.
  • Pages: 2
  • Words: 626

Organic Compounds at Home and at the Workplace

One of the defining features of ketones and aldehydes is that these compounds are not soluble in water. In conclusion, functional groups of organic compounds can help define some of their features, such as dissolution, [...]
  • Pages: 1
  • Words: 308

Titration of Acids: Standardizing Sodium Hydroxide

This procedure is also performed in this reaction, where a sodium hydroxide solution with the specified characteristics was used as the titrant and potassium hydrogen phthalate was used as the test solution; three tests in [...]
  • Pages: 2
  • Words: 500

What Causes Molecules to Absorb Light

The arrangement of the tubes in this order was compared with the corresponding arrangement in the peers in order to check the literacy of the color ranking and to identify the ligands without errors qualitatively.
  • Pages: 2
  • Words: 631

Natural Science: Tunable Emerald Laser

The emerald laser is a solid-state tunable laser that emulsifies fat in the tissue under the skin. The primary role of the emerald laser is in low-level laser therapy.
  • Pages: 2
  • Words: 597

Dry Ice Usage Aspects Analysis

It is necessary to explore in more detail exactly in which cases dry ice is used, what are the alternatives and why this method is extremely dangerous when interacting with concrete.
  • Pages: 8
  • Words: 2319

Isopropyl Alcohol in Cosmetics and Medicine

Isopropyl is synthesized in two steps: through the reaction of propylene with sulfuric acid and the consequent hydrolysis. In the context of isopropyl alternatives as sanitizers, ethyl alcohol serves as a solid option.
  • Pages: 2
  • Words: 528

Identifying Metals in the Sunken Treasure

While focusing on the first chemical reaction known as analysis reaction it could also be termed chemical decomposition and it is also one of the most popular chemical reaction types.
  • Pages: 2
  • Words: 545

Alice Ball’s Contribution to Science

Therefore, Alice Ball was a chemist whose scientific life and contributions to science led to the use of isolated ethyl ester from Chaulmoogra oil in the treatment of Hansen's disease.
  • Pages: 2
  • Words: 555

Structural and Functional Features of Zeolites

It is believed that the tremendous success in the field of the introduction of zeolites is connected with oil refining. The article will focus on zeolite ion exchange and the definition of sodium zeolite as [...]
  • Pages: 10
  • Words: 2762

Chemical Processes: The Diels-Alder Reaction

However, the basis has remained unchanged; namely, the addition of a dienophile to a diene by 2,4-conjugation allows the preparation of non-aromatic homocyclic with one multiple bonds in them.
  • Pages: 2
  • Words: 592

Research of Amorphous Solids in World

The purpose of this report is to describe the history, structure, properties, and applications in real life of amorphous solids. The molecules of an amorphous solid have a short-range order of action.
  • Pages: 9
  • Words: 2570

Spectrophotometry Used in Biochemical Settings

The work of a spectrophotometer is based on this law to calculate the amount of light, its absorption, and concentration. Spectrophotometry is necessary to demonstrate how non-destructive methods help check the condition of the water, [...]
  • Pages: 2
  • Words: 552

Perfluorinated Alkyl Acids Contamination

This paper examines the sources of PFAAs contamination in the environment, their effects on animal and human health, and the existing U.S.policies regarding PFAAs.
  • Pages: 5
  • Words: 1424

Semi-Microscale Diels-Alder Reaction

In the present experiment, a semi-microscale study of the IR spectra of the recrystallized product and raw materials is carried out to confirm the reaction between anthracene and maleic anhydride.
  • Pages: 3
  • Words: 891

Aqueous Solution Definition in Chemistry

However, regarding the title of the article, the examination of the gel formation is missing in the abstract, and several questions about the chosen research process emerge. The next section in the article is devoted [...]
  • Pages: 6
  • Words: 1760

Glucose and Its Importance in Biology

Among them are galactose and fructose, with galactose being the optical isomer of glucose, while fructose is the structural isomer. On the contrary, while glucose and fructose can be found in natural sugars, especially in [...]
  • Pages: 1
  • Words: 375

Stoichiometry and Process Calculations

The method used to determine the unknown compound is called Gravimetric analysis. According to Helmenstine, the gravimetric method is used to measure the compound's mass.
  • Pages: 1
  • Words: 344

PH Titrations & Buffer Solutions Experiment

The objective of this experiment was partly to determine the behaviour of PH curve of a triprotic acid and hence determine its pKa value, and on the other part to determine the concentration of an [...]
  • Pages: 7
  • Words: 986

Organic Chemistry – Contributions and in Life

Despite many challenges imposed on the balancing of equations of pertaining reactions, in school my interest was drawn into the study of organic chemistry, which entailed a study of organic carbon compounds.
  • Pages: 2
  • Words: 586

The Universal Nature of Biochemistry

If the power between the two atoms is the same they share the electrons and form a covalent bond, but if one atom's power exceeds the other, then one loses the electron or electrons to [...]
  • Pages: 4
  • Words: 1116

Biochemical Oxygen Demand Measurement

The essence of the method of measuring BOD is to establish the concentration of molecular oxygen in the water sample immediately after the selection and after incubation periods of the sample.
  • Pages: 3
  • Words: 397

Pinacol Rearrangement and Alcohol Reactions Lab

The purpose of this experiment is to use the researcher's background knowledge on alcohol reactions to explain more complex reactions. The objective of this reorganization is to generate a ketone.
  • Pages: 8
  • Words: 2200

Substitution Reactions of Alcohols: Practical Experimentation

The experiment aims to illustrate the way substitution reactions of alcohols transpire. In particular, the experiment aims to illustrate the way 1-butanol undergoes nucleophilic substitution reaction resulting in the formation of 1-bromobutane.
  • Pages: 9
  • Words: 2290

Acid Extraction by Acid-Base-Coupled Extractants

Acetylsalicylic acid Physical properties Acetylsalicylic acid exists in the form of white crystals with a molecular weight of 180. The figure below shows the structure of acetylsalicylic acid Acetylsalicylic acid is soluble in water with [...]
  • Pages: 10
  • Words: 3105

The Chemical Communication System

The appropriate elaboration of this communication is through the study of Biological Engineering, which is an application of different concepts and methods of biology to get solutions to life sciences.
  • Pages: 2
  • Words: 544

Methoxyprazin in Aroma of Wine (Sauvignon)

The occurrence of isobutylmethoxypyrazine-like aroma in the making of wine is regularly associated with the grape variety, which proves that the methoxypyrazines are produced under genetic control in the grape berry.
  • Pages: 4
  • Words: 1163

Chemistry: Cooking Temperatures

Specific temperatures, therefore, are needed to be observed during the preparation of specific foodstuffs and, of course, for specific durations. The range of temperatures between 41 F to 135 F also known as the danger [...]
  • Pages: 3
  • Words: 866

Conduction Phenomena in LI-Ion Batteries

Other challenges the researchers face are the constantly changing conduction properties of the anode and the difficulty in measuring the conductivity and microstructure of the solid-electrolyte film.
  • Pages: 6
  • Words: 1669

Acute Acrylonitrile Toxicity

The metabolism of acrylonitrile is via multiple pathways but the main one involves the pairing of acrylonitrile with glutathione-S-transferase as a catalyst.
  • Pages: 2
  • Words: 556

Comparison Mercury Testing in Fish Tissue Samples

For validity and reliability of the results, sample blanks are analyzed alongside the samples to ensure that no contamination is carried over to the next sample and also to check the accuracy of the analytical [...]
  • Pages: 2
  • Words: 623

Preparation and Properties of an Aqueous Ferrofluid

A ferrofluid is a liquid that contains very small pieces of a magnetic substance and hence acquires its magnetic properties when placed in a magnetic field. A ferrofluid primarily consists of small particles which are [...]
  • Pages: 5
  • Words: 1385

Energy Intake and Expenditure Analysis

Determination of relationship between energy intake and energy expenditure is therefore important aspect towards determination of maximal energy expenditure, optimization of fat expenditure as secondary source of energy after carbohydrates and capacity to achieve energy [...]
  • Pages: 4
  • Words: 1366

Uranium Mining and Issues Tied to It

Because the effects of radiation can be far reaching on the health of the workers and the people living in close proximity to areas where uranium is mined authorities should ensure that they provide information [...]
  • Pages: 6
  • Words: 1863

Indirect Definition of the Unit of a Penny Weight

The beaker containing all the available pennies and, also the beaker plus half the number of pennies were to be separately weighed and recorded initially before the commencement of the experiment.
  • Pages: 2
  • Words: 688

Toxicology: Is Water a Toxic Substance?

It is well known that the solubility of ethanol in water is unlimited. Toxicity could be a characteristic of the formation of the reactive oxygen species which can also be present in water.
  • Pages: 2
  • Words: 550

Seawater vs. Brackish Water Reverse Osmosis

The concentrations of seawater and brackish water differ considerably; hence, there is a distinction involving the concentrate acquired from seawater desalination plants and brackish water desalination plants.
  • Pages: 2
  • Words: 539

Desalination: Biofouling of Seawater Reverse Osmosis

Membrane fouling occurs as a result of the accretion of substances on/in/or near the membrane. More so, during desalination, the process is carried out in a way similar to the treatment of drinking water.
  • Pages: 3
  • Words: 821