Science Essays

This experiment is designed to demonstrate two concepts. First, it will provide a demonstration of how chemists can use chemical reactions to understand reaction mechanisms. Second, is the concept of multi-step synthesis. You will be performing the following reaction: Isomer IIsomer II + Enantiomer+ Enantiomer Brominetrans-Cinnamic Acid2,3-Dibromo-3-phenylpropanoic acid MW 160 g/molMW 148 g/molMW 308 g/mol […]

An investigation to compare the reaction rates between potato and hydrogen peroxide against liver and hydrogen peroxide through loss in mass. Background information: Catalase is an enzyme that is found in all cells. This means that it is an intracellular enzyme. And enzyme is a biological catalyst. A catalyst is some thing that speeds up […]

The synthesis of several complex organic compounds follows a multistep synthesis. “Multistep synthesis” refers to the process in which the merchandise of one reaction serves as the get downing stuff in the subsequent reaction. The multistep synthesis of benzilic acid begins with a transition benzaldehyde to benzoin through a condensation reaction. The benjamin so oxidizes […]

Thin Layer Chromatography, also known as TLC, serves as a means of both separating and identifying substances. Chromatography comes in diverse variations, but a common feature is that there is a fixed and a moving element. In TLC, the silica gel on the tray constitutes the stationary phase, while the mixture under separation makes up […]

A desiccation reaction of an intoxicant consequences in an olefine. This type of reaction requires an intoxicant. an acerb accelerator and heat. Generally strong concentrated acids. like sulphuric acid and phosphorous acid. are used as the acerb accelerator. The acerb accelerator protonates the intoxicant. to do a much better go forthing group. Weakest bases make […]

Electrophoresis is the motion of dispersed particles relative to a fluid under the influence of a spatially uniform electric field. Gel electrophoresis Is a laboratory procedure used to separate biological molecules with an electrical current. In this lesson, we’ll review how agrees gel electrophoresis works and introduce the equipment necessary to perform an electrophoresis experiment. […]

Introduction Chemiluminescence is a method used to measure analyte concentration by detecting the optical emission from excited chemical species. This technique differs from atomic emission spectroscopy (AES) as it involves the emission of energized molecules rather than excited atoms. The emitted light bands in chemiluminescence are wider and more intricate compared to those observed in […]

Objective: To separate the components of unsweetened, grape flavored Kool-Aid. Procedure: Using two syringes, inject different concentrations of alcohol to extract red and blue dyes, and artificial flavoring. Data: Conclusion: Different dyes are shown when separated by different concentrations of isopropyl alcohol. Discussion of Theory: Chromatography, resolution and selectivity played major roles in making the […]

In column chromatography a mixture is dissolved in a solvent and poured over a column of solid adsorbent then eluted with the same or a different solvent. This method is often used for preparative purposes; when a relatively large amount of the mixture and the components need to be isolated. The two main pigments in […]

Abstract The goal of this experiment was to use different dyes to determine the Rf value. Chromatography is done to determine the presence of a mixture in a substance. In this experiment different dyes were used such as McCormick food coloring, M&M’s, Kool-Aid, and the dyes that came with the lab kit. Experiment and Observation […]

Through chemistry, the study of what objects are made out of, we use different methods for finding out things we do not know. Most materials in our world are mixtures. Very few materials are pure substances. The art of separating mixtures is important because it enables us to isolate pure substances. Mixtures are either homogeneous […]

Chromatography is a term used to define a set of laboratory techniques for the separation of mixtures. Through Chromatography we analyzed complex mixtures. In our recent lab we analyzed complex mixtures. The purpose of this lab was to find whether the water soluble or acetone soluble liquid traveled farther. In our recent ab we measured […]

Background Information and Research 1. Provide a simple explanation of paper chromatography and its applications. 2. List three practical uses of paper chromatography in the fields of chemistry and biology. It is essential to provide citations for any research performed in this section. Purpose Clearly state the objective of this lab investigation in one or […]

ABSTRACT Beer’s Law is an empirical relationship that relates the absorption of light to the properties of the material through which the light is travelling. In turn, absorbance is proportional to concentration and the higher the concentration, the higher the absorbance. This experiment incorporated Beer’s Law and is focused on determining the stress that various […]

I am going to do an investigation into the ethanoic acid content of various kinds of vinegar. The chemical equation for the making of ethanoic acid is as follows: ethanol oxidization bacteria Ethanoic Acid To do this experiment I intend to do an accurate titration using a burette. Hypothesis: I predict that the amount of […]

To perform an experiment in the labs to determine the heats of combustion of selected alcohols and then to use this Information and the gathered data from chemical data sources to determine trends In the longer chain alcohols. The Variables that MUST be controlled throughout the experiment are: ; The height from spirit burner nozzle […]

The aim of this experiment involves the oxidation of primary alcohol, ethanol, resulting in the production of either an aldhyde or a carboxylic acid. The desired outcome is to test and determine whether the final product is ethanol or ethanoic acid. Safety While conducting any experiment, it is crucial to prioritize safety. In this experiment, […]

Microbe is a term for tiny organisms that individually are too small to be seen with the unaided eye. There are five main types of microbe: bacteria, archaea, fungi, protists and viruses. * Bacteria – Bacteria are not only are with us all the time, but help us do an amazing array of useful things […]

Lab Introduction Stratification is an important part of organic chemistry that has many practical applications. Stratification can be used to make polymers. In most cases, esters are used for scents – they often smell fruity and sweet. In general, an stratification reaction results from a condensation reaction between a carboxylic acid and an alcohol. The […]

At Jugulars State College Laboratory High School Buenaventura, Samaras, a science investigatory project was conducted to compare the rate of fermentation of three different fruit juices: Magnifier Indict, Anon Marietta, and Citronella’s Microware. The study involved three treatments with 200 ml of one fruit juice fermented with 20 yeast cells each. The researchers recorded the […]

You soak a note in ethanol (alcohol) and it will burn when lighted, leaving the note untouched. This is because alcohol is more flammable, and burning alcohol causes it to vaporize, along with the water present in the solution. This removes heat from the note and prevents it from reaching its combustion point. Materials Bill/Dollar […]

In order to create the sodium hydroxide solution, its pellet-form was dissolved in deionized water. The concentration of ethanol varied in each trial, with 25 mol% and 35 mol% concentrations used in the reactor. In order to determine the rate constant, 10 ml samples were taken every 10 minutes for an hour during the reaction […]