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recrystallizing an impure compound Essay Examples

107 total results

Lab Report on Organic Compounds in Foods (537 words, 4 pages)

Organic Compounds in FoodsObjective The purpose of this lab was to determine which organic compounds are found in our foods.Hypothesis For each food, we predicted which organic compound each contain and did not contain. If we recorded a addition sign () that meant that we predicted that it was going ... Read More

Defining Elements and Compounds (227 words, 1 pages)

An element is a kind of atom. Elements are the simplest form of matter.Elements are composed of a single type of atom and cannot be broken downinto simpler substances. Elements can not be broken down with either achemical or physical change. An element is made up of many atoms. Eachatom ... Read More

A Lab Experiment to Determine Water Percentage Within the Sample Copper Sulfate Pentahydrate Compound (1826 words, 9 pages)

Hydration LabPurpose The purpose of this lab was to determine the percentage of water within the sample copper sulfate pentahydrate compound. The goal of the students was to record the amount of water evolved in comparison to the amount of copper sulfate and calculate the amount of moles of water ... Read More

An Experiment to Understand and Carry Out the Recrystallization Process in Order to Achieve a Pure Solid Compound (2124 words, 8 pages)

Recrystallization Part I Purpose and Procedure The purpose of the experiment is to understand and carry out the recrystallization process in order to achieve a pure solid compound. Materials10x100 mm reaction tubePasteur pipette Electric sand bath Boiling stick CorkRing stand with clamp Hirsch funnel Erlenmeyer flask 10-mL graduated cylinderIce Hotplate ... Read More

The Effects of the Chemicals Oxygenated Volatile Organic Compounds on Climate and Temperature (550 words, 2 pages)

In a recent study mainly conducted at the National Center for Atmospheric Research in Boulder, plants were shown to absorb about 36 more harmful chemicals in the atmosphere than previously thought. These chemicals, called oxygenated volatile organic compounds (oVOCs), are a large factor in climate and temperature throughout the world. ... Read More

A Personal Account of the Lessons Learned While Reading The Compound Effect by Darren Hardy (295 words, 1 pages)

What I LearnedWhile I was reading the The Compound Effect, by Darren Hardy, I learned a lot of new things that I can and will try to apply to my life. One of the biggest things that I remember from the book is that success and failure are the results ... Read More

The Benefits and Drawbacks in Using the Three Types of Placebos as Categorized by Scientists: Pure Placebo, Impure Placebo, and Nocebos (1110 words, 4 pages)

The placebo effect is a term used to define a beneficial outcome from a persons belief that a specific type of prescription or treatment will work. The placebo effect exist not only in medical situations but also in everyday life and superstition. A prominent example of this is when a ... Read More

An Analysis of Hooman Sharifi and Impure Company (349 words, 2 pages)

As I skimmed through the text, I came across a short excerpt from a choreographer named Hooman Sharifi. He stated his opinion about dance as politics, and how nothing is ever new but as dancers we try to communicate with audiences in as genuine a way as possible. I enjoyed ... Read More

A Representation of My Book Called The Compound (371 words, 1 pages)

Hi. My name is Jeffrey Baldwin and Im going to tell you about my book called The Compound. In Eastern Washington, the Yanakankis family has a cabin. The father of the family, Rex Yanakankis builds a compound to abandon his mother- in-law, Gram. She is the only person who can ... Read More

A Lab Report on the Use of Compound Light Microscope and the Impact of Its Parts on the Magnification of Objects (833 words, 3 pages)

The main goal of the Microscope Investigation Lab is to learn the different parts of a compound light microscope and how they work together to magnify objects. This lab connects to what we are learning about in class as we can use microscopes to magnify small objects that we normally ... Read More

A Chemistry Lab Report: Recrystallization of an Unknown Soluble Compound (356 words, 1 pages)

Title of Experiment Recrystallization of an UnknownObjectives The purpose of this experiment is to determine the chemical identityof an Unknown soluble compound in the most accurate methods possible.However we will first have to separate it from two other solutes throughfiltration and recrystallization. The best method of classification isdetermination by melting ... Read More

A Study on Intermarriage and Impurity in the Hebrew Bible (2604 words, 11 pages)

Intermarriage and Inauthenticity in the Hebrew BibleThe various laws and commandments in the Bible against intermarriage, many of which seem arbitrary and trivial, are puzzling as to their purpose. Ancient scholars and multiple present-day followers believe and attempt to explain that these laws were established by God for specific spiritual ... Read More

A Lab Report on the Determination of Melting Point of Organic Compounds (982 words, 4 pages)

Melting Point Determination LabPurposeTo become familiar with procedures to measure melting points and to understand the value of using melting point as a tool for characterizing organic compounds.BackgroundMelting point is the temperature at which solid and liquid phases of a substance are in equilibrium, where a solid will begin to ... Read More

An Experiment to Recover Purified Benzoic Acid Using Extraction and Recrystallization (687 words, 4 pages)

Results and CalculationsTable 1-Shows the recorded masses of the Benzoic Acid etc. from part one of the experimentInitial Mass of Benzoic Acid (mg)500Mass of Filter Paper (mg)180Mass of Filter Paper Crystals (mg)545Mass of Recovered Benzoic Acid (mg)365Table 2-Shows the recorded masses of the Benzoic Acid etc. from part two of ... Read More

An Experiment for Constructing 2-Methylphenoxyacetic Acid, a Complex Biologically Active Compound (555 words, 3 pages)

The purpose of this experiment was to construct a complex biologically active compound, 2-methylphenoxyacetic acid. This was preformed using a synthesis reaction by combining two simple compounds, 2-methylphenol and sodium chloroacetate. Suction filtration was used multiple times in the experiment to separate the product from solvent. After obtaining a crude ... Read More

A Lab Report on Recording the Solubility, Melting Time, an Other Properties of Several Chemical Compounds (1242 words, 6 pages)

Pre-AP Chemistry Lab Report Purpose The purpose of this Experiment is to record the solubility, melting time, electrical conductivity, and physical properties of several chemical compounds including Stearic Acid (CH(CH)COOH), Calcium Chloride (CaCl), Cetyl Alcohol (CH(CH)CHOH), Potassium Chloride (KCl), Strontium Nitrate (Sr(NO)), Dextrose (CHO), and 2 unknown compounds that will ... Read More

The Techniques of Extraction of a Compound and Recrystallization Techniques (839 words, 4 pages)

IntroductionExtraction is a technique that can be used to determine the identity of a compound. By extracting the pure form of different molecules in a compound the chemical properties can be tested and from there identification can be determined. One type of extraction is solid phase extraction, where a liquid ... Read More

Organic Compound Lab: Testing Foods to Check if They Contain Lipids, Proteins, Starch and Sugar (1262 words, 4 pages)

In the Organic Compound Lab 8 foods were tested to see if they contained lipids, proteins, starch, andor sugar. Hypothesis Table FoodLipidsProteinsStarchSugarApple JuiceXXEgg WhiteXXCorn SyrupXPotatoXButterXXLiverXXBananaXWaterComprehensive Data TableFoodLipidsProteinsStarchSugarApple JuiceXXEgg WhiteXCorn SyrupXPotatoXXButterXXLiverXXXBananaXXWaterThe hypotheses were that apple juice contained starch and sugar, egg whites had lipids and proteins, corn syrup contained sugar, potato ... Read More

A Comparison of Ionic and Covalent Compounds (711 words, 2 pages)

Comparing Ionic and Covalent CompoundsIntroductionAn ionic compound is a compound composed of at least one positively-charged cation and at least one negatively-charged anion holding each other together by electrical attraction (Guch). Ionic compounds are held together in strong crystal lattice structures. Ionic compounds are typically formed by one metal (the ... Read More

The Use of Experimental Techniques in Order to Record Temperature and Volume Data for Known and Unknown Compounds (1070 words, 2 pages)

Purpose The purpose of this experiment is to be able to use experimental techniques to record temperature and volume data for known and unknown compounds when liquid and gas are in equilibrium and also, by using this information, to be able to determine the boiling point of the liquid and ... Read More

Determining the Molecular Weight of an Unknown Compound Using Cyclohexane (1748 words, 3 pages)

Purpose The purpose of this experiment is to determine the molecular weight of an unknown compound by using cyclohexane as a solvent and measuring the freezing point depression with cyclohexanes freezing point and the unknowns freezing point.DiscussionThe goal of this experiment is to be able to determine the molecular weight ... Read More

Lab Experiment to Find Similarities Between Different Compounds and Bonds (471 words, 2 pages)

I have completely and totally adhered to all guidelines published inthe student handbook on Academic Integrity. I have completely and totallyadhered to all guidelines published for this class in the Syllabus andAcademic Integrity Handouts. I certify that this report is completely myown work, aside from properly referenced and cited information. ... Read More

An Experiment to Indicate the Presence of Certain Organic Compounds Within Carbohydrates and Amino Acids (794 words, 4 pages)

Lab Report 3AimThe main purpose of conducting this experiment was to indicate the presence of certain organic compounds within carbohydrates and amino acids. Using certain tests, we can identify if those compounds are present, and put each amino acids or carbohydrate into certain categories. For example, sucrose is a non-reducing ... Read More

An Experiment to Understand the Relationship Between Organic Compounds and Their Melting Points and Boiling Points (573 words, 3 pages)

AimThe main purpose of conducting this experiment was to help us understand the relationship between organic compounds and their melting points and boiling points. This lab showed us how by adding different ratios of a mixture can vary the melting point, and how we can identify an unknown by measuring ... Read More

An Impure Public Good, the Types of Externalities Associated With It and Technology of Public Good Supply; Marine Conservation (1321 words, 5 pages)

Introduction Discuss what an impure public good is, the types of externalitiesassociated with impure public goods, the technology of public good supply(best shot, weakest link, etc.), and the types of economic incentives(positive and negative) that are created for impure public goods withdifferent technologies of public good supply.Marine biodiversityconservation incurs the ... Read More

The Purpose of Classifying Anthocyanidin Compounds That Had Been Isolated from Anthocyanins in Different Berries (2067 words, 9 pages)

Using UV-Vis Spectroscopy and Chromatography to Classify Anthocyanidins AbstractThis experiment was performed with the purpose to classify anthocyanidin compounds that had been isolated from anthocyanins in different berries. This was accomplished through chromatography and UV-Vis spectrophotometric analysis. The results showed that the blueberry samples had the highest Rf values in ... Read More

The Health Risks of Perlourinated Compounds (602 words, 3 pages)

PFCs and YouAre you someone who goes outside and picks vegetables from the garden, gathers eggs from the chickens, and then goes inside to cook yourself a fresh organic meal? Having an easily accessible meal that is fresh and organic is far from reality for most of us. Especially when ... Read More

A Report on the Process of Purifying an Impure, Unknown Compound Through Recrystallization (2122 words, 7 pages)

An Investigation into Recrystallization and Identification of an Unknown.AbstractThis report describes the process of purifying an impure unknown compound through the act of recrystallization and identifying the unknown compound based on its physical property of melting range. The compound was identified as benzoic acid based on the data obtained through ... Read More

An Overview of the Chemical Compound Called Caffeine (616 words, 2 pages)

Chemical CompoundThis world is full of diverse items that are made out of chemical compounds. Items can be simple and contain one chemical compound, and other objects can be complex and contain more than one chemical compound. It is amazing to see how much chemical compounds are involved in one ... Read More

Structures and Compounds Found in Martian Meteorites (2428 words, 10 pages)

MARTIAN METEORITES NO "SMOKING GUN" Structures and compounds found in Martian meteorites are suggestive of microbial life, but the constraints of chemical analysis and contamination resolution limit the strength of this evidence. Direct soil sampling by a space probe will likely yield more conclusive evidence for life on Mars. The ... Read More

Published: Friday 25th of January 2013