Chemistry Essay Topics

Quantitative Determination of Sulfate by Gravimetric Analysis

1. Synopsis: This report is written about determining the quantitative amount of sulphate inside barium sulphate, BaSO₄, using the method of gravimetric analysis. This quantitative determination is done by the addition of a dilute solution of barium chloride slowly to a hot unknown sulfate solution slightly acidified by concentrated hydrochloric acid, HCl. The white precipitate… View Article

Chemical Policy Regulation

The European Commission’s Registration, Evaluation and Authorisation of Chemicals (REACH) is a new system wherein manufacturers, distributors, and importers are required to sign-in their chemical inventories into a centralized database, along with information on physical and chemical properties, safe handling, hazards, and uses. Substances with carcinogenic, toxic, or mutagenic activity will require permission before being… View Article

Hydrogen Peroxide and Iodide Kinetics

(Be sure to state references for any cited value at the end of this report. Additionally, all report material must be in INK – pencil or white-out will render the work ineligible for mark appeal) 1.What observations and conclusions can you note about each of the three reactions that occurred in the test tubes where… View Article

Calorimetry

The purpose of this experiment was to find the specific heat formation of magnesium oxide by combining the two heat reactants using Hess’s Law. The purpose was also to measure the delta T which was the final temperature minus the initial temperature of the solution. The claim made was, based on the expected heat formation… View Article

Marie Curie – Change Agent

Marie Curie has been chosen as a change agent due to the fact that she was the first woman to win a Nobel prize. She studied radioactivity, “a term which she invented,” (1) and invented portable x-ray machines which were carried by vans to the wounded in the field during World War I. (2) Element… View Article

Chemistry in Daily Life

1.You feel hungry because of the satiety center in your brain falls short of particular hormones to function and then sends the signal of hunger. 2.You fall in love, get attracted and have a feeling of belonging because of certain monoamines present in your brain which get stimulated through nerve sensors. 3.If you have wondered,… View Article

Earth the Ailing Planet

For more than a hundred years, human beings have been excavating mountains and building roads for faster transportation. When the forests and mountains are destroyed, natural waterways are also disrupted. In today’s modern world, there is mass production of goods for daily consumption. The sprawling cities, high-rise buildings, cars, and electric appliances of modern society… View Article

Chemical Reactions Are Basis of Our Life

Chemical reactions are the basis of life on earth. As human beings, we are little more than the naturally abundant elements of which we are composed and the reactions between the compounds that they form. After all, how could life exist without water? Oxygen transport in a body the size of the human body would… View Article

Rate Law and Activation Energy

Introduction In this experiment we are analyzing the relationship between reaction rates at different concentrations and temperatures to determine the true rate constant, activation energy, reaction orders, and half-life of a reaction. The reaction of interest is the addition of a hydroxyl group to the nucleus of Crystal Violet. Crystal Violet, or hexamethylparaosaniline chloride for… View Article

Periodic Table and Sodium

Sodium, one of many elements in the periodic table is being used in everyday life, it is also an essential element within your body. It is just another element, but one of the differences is that this element is something that most people consume every day. Sodium has played an important role in everyday life… View Article

Chemistry – Factors Affecting Electrochemical Cells

How do the changeable electrodes of different reactivity affect the energy in Volts measured by a Voltmeter while the Solution and the Salt Bridge stay constant for every single trial by the same amount in each beaker? Background Theory: The conductance of an electrolyte depends upon the number of ions present in the solution. Therefore,… View Article

Analysis of a Copper Sulfate Sample

The purpose of this experiment is to find the empirical formula of a hydrous copper sulfate sample and the amount of water in the sample. This whole process will be determined in three different experiments. Procedure: Experiment 1 – Percentage of water in sample. The percentage of water in hydrous copper sulfate was determined. Clean,… View Article

Composition and Seperations

When a kernel of popcorn is heated, pressure builds and, depending on the percent of water in the kernel, the kernel pops open and popcorn is produced. The percentage of water in each kernel differs between brands of popcorn. If the steam produced fails to pop the kernel, the kernel becomes hard and burns. The… View Article

Dmitri Mendeleev

I have chosen to write about Dmitri Mendeleev. What was Dmitri Mendeleev know for? Dmitri Mendeleev was a Russian chemist who developed the periodic classification of the elements. In his version of the periodic table, Mendeleev left gaps in places where he believed unknown elements would fit in and he predicted the likely properties of… View Article

Copper Cycle Lab

Purpose: During this experiment, we were trying to see whether copper, after a chain of chemical reactions, will revert back to its elemental form. Procedure: First, I added nitric acid with copper in a beaker, which turned into a copper nitrate, a blue-green solution. Afterwards, I added sodium hydroxide, and my solution colored to a… View Article

Nitrophenol

Abstract: Using a micro scale steam distillation we separated ortho and para-nitrophenol from a mixture that was already made. After the para and ortho were separated we measured their melting points and compared it to the literature values for purity. For ortho-nitrophenol we had 60% recovery and for para 160% recovery. Our melting point ranges… View Article

The Source of Mercury

Mercury may occur in nature in pure form (metallic mercury), in combination with silver, or most of the time in the form mineral cinnabar ore (HgS). It is the 67th most abundant element found in crustal rocks. It is found in the Earth’s crust but moves into the biosphere because of human activities and of… View Article

Investigatory Project

Garlic is commonly used in culinary and medicine. It grows up to 0.5 m (2ft) in height. Garlic helps prevent heart disease including atherosclerosis, high cholesterol, and high blood pressure and cancer. Garlic is used to prevent certain types of cancer, including stomach and colon cancers. A Czech study found garlic supplementation reduced accumulation of… View Article

Gravimetric Analysis

The purpose of experiment 1, also named Gravimetric Analysis, is to study the use of analytical chemistry. Analytical chemistry is a branch of chemistry that involves determining what matter is and how much of it exists. It is the science of separating, identifying, and determining the components that make up a compound and determining a… View Article

Scrubber System

In short a scrubber system basically removes harmful materials from exhaust gases before they are released into the environment or atmosphere. There are two types of scrubbing methods. There is wet and dry scrubbing. Both systems work in similar ways and have the same end result. That is to change a toxic chemical into something… View Article

Specific Heat and Atomic Weight

The purpose of this experiment was to find the relationship between a substance’s specific heat and its atomic weight. In the lab, the substances with the higher atomic weights had less specific heat. From this, we can conclude that specific heat and atomic weight have an inverse relationship, meaning as one decreases the other increases…. View Article

Predicting the Products of Double Replacement Reactions

Introduction – A double replacement reaction is a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound. If you have the reactants of two reaction solution that you can determine the products. All you need to do is pair the positive parts of… View Article

Osmolarity: Concentration and Sucrose Solutions

My group and I conducted the experiment that estimates osmolarity by change in weight of potato tubers, this was conducted in order to explore the process of diffusion and osmosis and more importantly to investigate the question of “Does different concentrations of sucrose solutions have an effect on the final weight for the potato tubers?”… View Article

Osmosis Lab Report

Abstract: The objectives of this lab was to be able to create models of cells with the dialysis tubing to show us how the plasma membrane is selectively permeable, to study the effects of osmosis on a model cell, and to foresee the effect of solute concentration on osmosis. In order to achieve these objectives,… View Article

Pharmaceutical Science and My Interest in Chemistry

I pursued bachelor of pharmacy from Sarada Vilas College of pharmacy, Mysore One of the best academic institutions for pharmacy under Rajiv Gandhi University of health sciences. Prospective Interest—— chemistry Pharmaceutical science is a multi faceted field, which incorporates a myriad number of subjects, which Include biotechnology, physiology, pharmacology, pharmaceutics, molecular biology so on and… View Article

Saturation of Borax

Formulating this experiment taught us many things. In the past, we were asked to conduct previously planned labs, with a purpose assigned from the teacher. We did not know how much thought was put into these labs until we were asked to create one for ourselves. An experimental process requires preparation, flexibility, and organization. This… View Article

A Proposal to Research the Liquid Remains After Resomation

Resomation is an alternative to cremation that helps the funeral industry and cuts down mercury emissions. The new technique of disposing a corpse is still not welcomed into potential clients mind frame do to the lack of information on the left over liquid once resomation is completed. I propose more research to be done on… View Article

Introduction for a Chemistry

The average University student has many tasks to accomplish and much studying to do while combating the onslaught of sleep. Students at the University of the West Indies Mona are no different and recommended amongst themselves a highly rated and popular health supplement “Yeast-Vite” [8]. Yeast-Vite is a health supplement pill which helps people fight… View Article

The Development of Periodic Table

Elements such as gold and silver have been known since the earliest times. In 1649, a German alchemist, Hennig Brand made the first scientific discovery of an element, phosphorous. In the next 200 years, knowledge about the properties of elements and their compounds was gained. By 1869, 63 elements had been discovered in total. Scientists… View Article

Iso-osmolar Concentration of Carrot Cells Lab

For a more thorough understanding of this lab introduction, the concepts of, iso osmolar, membrane, equilibrium, and concentration gradient evaluated. Iso osmolar can be known as the point in which the substance of experimentation faces no change despite the amount of solute inside the solvent( because the solvent and solute concentration is equal. This is… View Article