Chemistry Essay Examples and Topics. Page 2

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 [...]

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 [...]

On the other hand, the composition of the electroless nickel coatings depends on the conditions in an electroless plating bath and the formulation of the bath.

Dry Ice if put in water, starts melting, and soon it becomes gaseous, as the temperature of CO2 increases. If it is placed in a bottle, the gas pressure tears the walls of the bottle.

The first mentioning of shape memory materials was with the discovery of martensite in 1890, which was the first step for phenomenal discovery of the shape memory effect.

The difference in the energy of the impinging X-ray and the ejected electrons gives the binding energy of the electron to the atom.

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 [...]

Green chemistry can be described as the abolition of the use or production of harmful substances in the creation, making, and use of chemical commodities.

Therefore, temperature is the determinant of the absorption of the vapor of the combustible liquid by the air. The flashpoint of a liquid is the least temperature, which there will be enough concentrated vapor of [...]

The moving hydrogen protons are essential in the process due to the absence of electrons. Phosphoric in this reaction is a catalyst to achieve the result successfully.

At the moment of the impact between pendulum and specimen, part of this potential energy is used to fracture the specimen.

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 [...]

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.

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.

Most inorganic polymers come with different properties and characteristics hence the reason why they are used in different ways and for different things.

Antimony is mostly found with other elements and "Antimony was recognized in compounds by the ancients and was known as a metal at the beginning of the 17th century and possibly much earlier" Antimony is [...]

To prepare 500 grams of a 5% aqueous HCl solution, the chemist must have some basic information about the solute and the solution.

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.

As a matter of fact, oxygen is present almost everywhere forming two thirds of the body mass of a healthy human being, it accounts for half the mass of the crust of the earth as [...]

Hypothesis: If iodine is added to liquid food items, such as peas, corn, and carrots, then the iodine will turn a dark blue-black color, indicating the presence of starch.

The glassware is fixed in the foot of the tripod at a distance of several centimeters from the opening of the test tube or flask.

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% [...]

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.

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 [...]

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 [...]

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 [...]

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.

Results and outcomes of the experiment IR spectrographic analysis was performed for the obtained substance, the result of which is shown in Fig.1.

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 [...]

The choice of Glucose in the study is essential since it helps the body to function correctly as the primary energy source in the body cells.

The importance of this research to modern society lies in the fact that chemical reactions on the surface of catalysts play a decisive role in many industries.

Essentially, this was the case in this paper; however, the interchanging of methods to the end interfered with the normal flow.

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 [...]

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.

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 [...]

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.

As is known, each band on such a spectrum corresponds to an individual covalent bonding vibration; therefore, the study of the spectrum allows one to determine the nature of the substance under study almost unmistakably.

Accordingly, the application of magnesium in nature is based on its aid to plants and animals. The application of magnesium in real life is necessary to produce different items and support health.

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.

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.

The general idea of spectroscopic observations is reduced to the excitation of molecules by various external factors usually an electromagnetic field to study the characteristic bands or peaks in the analytical signal output of the [...]

The concentration of the element has been assessed in the local water intake in Poznan, while comparing the safe concentration of mercury according to Polish laws and the WHO.

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.

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.

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.

The Blatter radical, also known as the 1,3-diphenyl-1,4-dihydro-1,2,4-benzotriazin-4-yl radical, was discovered in 1968 and was named after the scientist who discovered it.

Osteoporosis, or atrophy of bone tissues, is spoken of if the transformation processes lead to a significant decrease in bone mass and an apparent violation of the microarchitectonics of the bone.

The stress posed by the high population in the country on the water systems is a matter that has to be dealt with accordingly.

To sum up, oxygen enters the blood through the process of breathing atmospheric air and travels from the nasal cavity through the trachea and bronchi into the lungs, and then, enters capillaries and erythrocytes.

The kinks resulting from the double bonding lower the melting points leading to dropped melting points of the unsaturated fatty acids.

The use of spectrometric analysis is a reliable instrumental method of chemical analytics that allows the qualitative identification of a substance.

The chemical reaction must be such that the energy released in the reaction is concentrated primarily in the excited vibrational states.

This paper will examine the literature on stable radicals, their synthesis, and the functions of the main families of stable radicals.

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 [...]

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.

The paper describes the symptoms of toxicity and deficiency of iodine and vitamin C as well as their impact on people's organisms.

In the conversion of the precursor substance tyrosine to dopamine, the following process occurs: the rate-limiting biomolecule in catecholamine production is tyrosine hydroxylase.

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.

With the direct utilization of the chemical compound, ink is produced and the continuous inkjet printing technology with the implementation of suitable printing machines for marking production is realized.

West, the former Deputy Director of the Office of Generic Drugs, the review process of brand name medicines and generics is identical from the first to the fifth stage.

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.

In the present experiment, a dish is prepared according to Kitchen #3: Ricotta cheese is prepared and then used to make Lemon, Spinach, Ricotta Pasta.

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 [...]

The main elements that constitute the definition of NMR include a magnetic field and an oscillating magnetic field. In spectroscopy, a sweep generator may be used to produce a magnetic field equal to that passed [...]

On the other hand, catechin is a weak acid, while rutin and cyanidin-3 are strong and weak bases, respectively. Lastly, epithelial cells are found within the gastrointestinal tract ad the cells are used to the [...]

It is important that the diffusion coefficient used to link the iodine concentrations in one phase to that in another account for the existence of iodide and polyiodide salts.

It was shown that the higher the concentration of the polymer in the solution, the slower it flows through the vertical capillary.

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 [...]

Nobel Prize in Chemistry is an award given yearly by the Royal Swedish Academy of Sciences to scientists who confer the greatest benefit to humanity in the various fields of chemistry.

As it is a lipophilic compound, the skin, the eyes, and the respiratory tract easily absorb the chemical. Sulfur mustard is also hypothesized to affect one's fertility and serve as a carcinogen, although the former [...]

The first prediction was the significant materials of the waste that can be changed to ethanol were lignocellulose and starchy compounds.

The study of the effects of chemical compounds on the body and in-depth studies of natural internal molecular transformations is a subject of study in biochemistry.

The precipitative gravimetric analysis allows the use of a net ionic equation for the measurement of the mass of solid calcium oxalate, determination of percent composition of calcium in the salt using the empirical formula, [...]

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.

This laboratory experiment focuses on the chemical composition of cells, appropriate identification of which contributes to the understanding of distinctions between organic and inorganic chemicals.

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.

The objective of the experiment was to determine the elemental concentrations of ten ayurdevic drugs obtained from the neighboring markets. The introductory part of the report is not exhaustive, especially in the techniques that can [...]

As for the second array of the reasons why chemistry is really important, they are concerned with people's ability to produce various products.

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 [...]

One way that the researchers explained the application of Bent's rule to the second-period elements is the distribution of the p character into the bonds depending on the radius of the atom and the electronegativity.

Compaction and mixing are some of the important stages in the manufacturing process. As such, when it is hot, temperatures are high and the viscosity of the fuel is reduced.

The second benefit of pasteurization is witnessed in the deactivation of enzymes that are found in various food substances. It is only the process of pasteurization that can lower the activity level of the enzymes.

Animal MTs have implications in inherited and occupational diseases that are linked to metabolic disorders in the handling of metal ions.

The chemical synthesis of 4-chlorophenoxyacetic acid is realized through the reaction of nucleophilic displacement between anions of the 4-chlorophenolate anion and chloroacetate, the product of interaction of which is subjected to acetic acid treatment.

Solving the problem is essential for securing Atropian independence and sovereignty from existing and potential separatist and insurgent challenges and addressing the root causes of the failure of the Government of the Republic of Atropia.

Consequently, scientists investigated the opportunity to create unique microorganisms that would be able to produce the silk with nanocrystals in the same amount as in natural spider silk.

Radon it is a radioactive gas that has no color or smell and is formed from the decay of radioactive elements.

The paper aims to examine cell viability with the LDH assay on the surrounding cell media and the resazurin reduction assay evaluating cultures of live cells generating findings in HepG2 liver cells that have been [...]

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 [...]

The presence of ROS in excess causes oxidative stress in the body, leading to the oxidation of proteins and lipids and the transformation of their structures and roles in the body.

In a muscle tissue, pyruvate would be converted to lactate instead of ethanal. It is predicted that most pyruvate in Test 2 and 3 would be converted to lactate.

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.

First of all, it should be recalled that the use of electrochemical methods in quantitative analysis is based on the use of dependencies of measured parameters of electrochemical processes on the content or concentration of [...]

Only the ascorbic acid or vitamin C in the drink will react with the dye. The reduction of vitamin C will be negligible.

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.

In a laboratory experiment, when a blown ball is over ice water, the kinetic energy of the molecules' fluctuations is transferred to the water.

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.

The principle of operation is the same as for water-based electrolytes, though no single popular type can be named due to the ongoing experimentation and innovation in the field.

This is mainly based on the fact that it has a consistent composition of chemicals, which gives it better conversion ability to different by-products, including methanol.

This is what triggered the research fronted by the Professor to determine the degree of caffeine in decaffeinated coffee brands, in the market.

Vitally, since this reaction is exothermic, it is necessary that cooling of the vessel is done in the due course to keep the temperatures low.

As has been mentioned above, samples of the liquid from the punctured drum must be analyzed in order to detect the potential danger of the situation.

On the other hand, the flow meter provides the rates of water flow to the dosing facility, which interprets the amount of fluoride needed in the water.

To satisfy the reader, the author looked at the various physical and chemical properties of N-Heterocyclic carbenes. The main argument is the application of the N-Heterocyclic carbene in the development of possible antitumor metallodrugs.

The report entails a summary of the experimental design and synthesis of the THIQ derivatives, the biochemical evaluation of the THIQ fragments, and the structural evaluation of the THIQ fragments as described in the article.

In a conclusion, this paper has brought into perspective the elemental radium as well as some of its important characteristics essential for one to be safe.

The aim of the study was to establish optimal levels of pressure and temperature in driving the Fischer-Tropsch Synthesis, while utilizing the Co/SiO2 catalyst.

The thermometer was positioned in the opening of the cardboard cover and its position was fiddled with to avoid the thermometer getting too deep into the calorimeter.

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.

This discovery shows that the emission of Methane not only depends on the species of the plant, but also the condition in where they are growing.

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.

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 [...]

Synchrotron radiation is a chemical process that can also be used in the determination of the structure and composition of coating in a metal.

Important systems in the body depend on the presence of an optimum pH in the body so that the body can function properly.

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.

The virtual gel should show the band pattern that would result from incubating the plasmid with restriction enzymes as indicated below.

The metabolism of acrylonitrile is via multiple pathways but the main one involves the pairing of acrylonitrile with glutathione-S-transferase as a catalyst.

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 [...]

The poster is presenting a sophisticated chromatographic based method that ensures a specific and sensitive detection of compounds or substances like -blockers through the use of ACQUITY UPLC FLR detector that ensures optimization of excitation [...]

In this illustration of a city, the following aspects of a city will be used to show a correlation to organic chemistry theories.