Chemistry Essays

Latest Chemistry Essays

• Phytochemistry and Pharmacognosy Chemical ConstituentsPublished: Mon, 18 May 2020Extract: Choose two medicinal plants from the list below to research their known chemical constituents. Explain, as far as possible, how their phytochemistry leads to their medicinal actions. Introduction Phytochemistry and pharmacognosy are the disciplines that research the presence and activity of chemicals produced by plants. Usually the chemicals under scrutiny result from the secondary metabolism […]
• Chemistry and Applications of CatapresPublished: Mon, 18 May 2020Extract:  Catapres is the brand name for clonidine hydrochloride. Clonidine hydrochloride is a 40-year-old sedative and antihypertensive drug. It was created in the 1960s and was originally established as a nasal decongestant. Clonidine was later used in the U.S to treat hypertension (Encyclopedia ). The drug acts as a centrally acting-agent, alpha-agonist, and a hypotensive agent and […]
• How Does Acid Concentration Affect the Rate of Reaction?Published: Mon, 18 May 2020Extract: RATIONALE: Reaction rate, the speed at which a chemical reaction proceeds. The rate of reaction is the speed at which reactants are converted into products. A few things can affect the speed of the reaction and the overall amount of collisions that can occur. Such as, HCI acid concentrations, temperature, and catalyst properties if either […]
• Experiment to Identify MacromoleculesPublished: Mon, 18 May 2020Extract: Identification of Some Macromolecules Introduction    The goal of this experiment is to react certain solutions using different tests, which consist of the Iodine test, used to determine the presence of starch and glycogen through colour change (Morris, 1946), Benedict’s test, used for determining the presence of sugars (Benedict, 1908), and the Biuret Test, used […]
• Effect of Reactant Concentration on the Rate of a ReactionPublished: Mon, 18 May 2020Extract: Open Ended Investigation – Galvanic Cells Plan, perform and report on an investigation to analyse how the rate of a reaction of a galvanic cell can be affected by concentration of reactants. Title: The effect of reactant concentration on the rate of a reaction Aim: To investigate how the rate of a reaction of a […]
• Can Spying Ever Be Ethical?Published: Mon, 18 May 2020Extract: In modern times, spying is a normality for every country’s intelligence agencies. While it may not seem irrational when first becoming aware about a country spying on other areas of the world or its own citizens, the real questions that remain include: Does that make it ethical? Can it ever be ethical? For such an […]
• Experiment on the Effectiveness of Coffee on Removal of WaterPublished: Mon, 18 May 2020Extract: Effectiveness of coffee on removal of water   Introduction A few years ago, the problems with dirty water arise, the demand for heavy metals has been rocketed, the waste metal has flowed into the environment from the surrounding activities from industrial activities (Castro et al. 2011).   Some other pollution comes from the vaporization of water […]
• Role of Intermolecular Forces on Compound Boiling PointsPublished: Mon, 18 May 2020Extract: The Boiling Point of a compound is defined as the temperature at which a substance passes through the phase change from liquid to gas at a particular atmospheric pressure. There are several factors that affect the boiling point of a compound, these can range from simple components such as the total atomic mass of the […]
• Chemistry of Wood Pulp PaperPublished: Mon, 18 May 2020Extract: Paper is a common material used in the binding of books, primarily used for the textblock with text and / or images printed on it. The process of making paper has a long history that dates back thousands of years and spans many countries and continents. Wood is used as the raw material for making […]
• Investigating the Oxidation Reaction of 2-Ethyl-1,3-Hexandiol with Sodium HypochloritePublished: Mon, 18 May 2020Extract: Investigating the Oxidation Reaction of 2-Ethyl-1,3-Hexandiol with Sodium Hypochlorite   Abstract: The purpose of this lab was to determine specifically how sodium hypochlorite acts as an oxidizing agent in the presence of a diol. To determine this, sodium hypochlorite was reacted with 2-ethyl-1,3-hexanediol with glacial acetic acid as the solvent. The product was isolated and […]
• Interaction between δ-‎aminolevulinic Acid Drug (ALA) and Peptides (L)Published: Mon, 18 May 2020Extract: Potentiometric investigation on the mixed Cu(II) complexes with δ-Aminolevulinic acid ‎‎(ALA)‎  and some ‎selected peptides (L) ‎ Abstract The interaction between δ-‎aminolevulinic acid drug (ALA) ‎ and peptides (L) with Cu(II) was investigated in aqueous medium at 25 ± 0.1 °C with I = 0.10 mol· L−1 NaCl ‎using ‎the potentiometric technique. The stability constants […]
• Strain Guage Experiment and ProcedurePublished: Mon, 18 May 2020Extract: Abstract  The main objective of this lab is to familiarize students with strain gauges and the proper procedures to take when applying them to the material and recording the data. The data will be recorded using a strain gauge, dial indicator and a weight hanger. This collected data will then be used to run an […]
• Investigating the Rate of CO2 Production of Yeast in Various TemperaturesPublished: Mon, 18 May 2020Extract: Investigating the rate of CO2 production of yeast in various temperatures Introduction: Yeast is a eukaryote and can undergo aerobic respiration in the presence of oxygen and produce water and CO2, and it can also undergo anaerobic respiration in the absence of oxygen to produce ethanol and CO2. Some organisms use fermentation as an anaerobic […]
• Nitrogen Presence in Drinking Water in Windsor- EssexPublished: Mon, 18 May 2020Extract: EXECUTIVE SUMMARY The population of Windsor Essex region is increasing year by year so the food demand is also following the same trend. According to the report by Essex County Federation of Agriculture’s in the year 2006 the Windsor region consists of 3 percentage of total Ontario’s farmland. To cop up with this increasing demand, […]
• Experiment to Synthesize, Purify and Determine Percentage Yield of AspirinPublished: Mon, 18 May 2020Extract: Introduction Aspirin, chemically known as acetylsalicylic acid, is an over-counter pharmaceutical drug commonly used to reduce pain and inflammation. Salicylic acid, in which aspirin is organically derived from, is bitter and irritable to the stomach, so in order to form the drug, salicylic acid and acetic anhydride must be reacted in the presence of an […]
• Green Chemistry – Importance and ApplicationsPublished: Mon, 18 May 2020Extract: “Green Chemistry – Importance and Applications” Green Chemistry also is known as sustainable chemistry looks at chemical products and processes that try to eliminate pollution from the generation of hazardous substances or by-products. Its objective is to reduce pollution by preventing hazardous by-products or substances from being generated. Green chemistry can have plenty of benefits […]
• Nylon Chemical Structure and ApplicationsPublished: Mon, 18 May 2020Extract:       INTRODUCTION: Organic chemistry is a chemical branch involved with carbon compounds and particularly carbon compounds found in living things. Originally restricted to compounds generated by living organisms, this branch of chemistry has been expanded to include human-made substances like polymers. Polymers are substances with a molecular structure that consists mainly or entirely of a […]
• Lewis Acid and Base Lab ReportPublished: Mon, 18 May 2020Extract: Introduction A majority of chemical reactions involve electrons interacting between compounds. It is important to picture these interactions through molecular orbital (MO) theory, where for Lewis acids and bases the movement of electrons between HOMOs (Highest occupied molecular orbital) and LUMOs (Lowest unoccupied molecular orbital). In the real world, some examples of acid and base […]
• Experiment of the Effect of Different Dissolved Substances on the Rate of Ice MeltingPublished: Mon, 18 May 2020Extract: 3: Murriama and her friend, Sara, were enjoying their favourite ice blocks. Halima noticed that her ice block melted faster than Sara’s. She wondered why they melted at a different rate. Q. Design and conduct an investigation to determine “if different dissolved substances impact the  rate at which ice melts”. Possible requirements: Stopwatch [not necessary […]
• The Role of Chemical Engineers in Combating the Effects of Climate ChangePublished: Mon, 18 May 2020Extract: The Role of Chemical Engineers in combating the effects of Climate Change   Abstract Climate change is the burning issue of this century. According to a recent major UN report, if we are to limit temperature rise to 1.5 °C and prevent the most catastrophic effects of climate change, we need to reduce global CO₂ emissions […]
• What is the Importance of Organic Chemistry to Society?Published: Mon, 18 May 2020Extract: Natural gas Natural gas is primarily methane (CH4) with smaller quantities of other hydrocarbons, commonly including varying amounts of other higher alkanes, it can be an only small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium. The natural gas can be categorized as dry that it’s mostly methane and wet that contains compounds such […]
• Finding the Equilibrium of Iron and the ThiocyanatePublished: Mon, 18 May 2020Extract: Finding the Equilibrium of FeSCN2+ Introduction Background  Thiocyanate (SCN-) is natural occurring in the human body that is secreted in the salivary glands. ¹ It is produced with the digestion of food and drugs used specifically to treat thyroid disorders or hypertension. High thiocyanate levels are indicative of cyanide poisoning² but could also be used […]
• Simple and Fractional Distillation of a Binary MixturePublished: Mon, 18 May 2020Extract: Introduction/Background Distillation is a process that is present in many common liquids such as perfumes, or even alcoholic beverages. It is through distillation that it is possible to have liquor with high alcohol content. Fruit and plant material produce dilute ethyl alcohol when fermented, and through distillation the ferment is transformed into concentrated and purified […]
• Nitration of Methyl Benzoate ExperimentPublished: Mon, 18 May 2020Extract: Introduction Background  The purpose of this reaction it’s to perform a nitration reaction on methyl benzoate to create a product of 3-nitro methyl benzoate. Within a nitration reaction it is typical to see electrophilic aromatic substitution reactions occur.1 It is important to note the characteristics of an aromatic structure. for a compound to be aromatic […]
• Flame Emission SpectroscopyPublished: Mon, 18 May 2020Extract: Flame Emission Spectroscopy Spectroscopy is used to find out the concentration of a solution by determining how much light is absorbed. The intensity of light emitted from a flame of a specific wavelength is used to determine the quantity of an element in a sample. The identity of the element is given by the wavelength […]