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Chemistry Essay Examples

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Empirical Formula Lab Report

INTRODUCTION John Dalton’s atomic theory states that elements combine in simple numerical ratios to form compounds. A compound, no matter how it is formed, always contains the same elements in the same proportion by weight. The law of mass conservation states that mass can neither be created nor destroyed. In this experiment, the mass of…

Solubility, Kidney Stones, CSI

Objective To conduct an experiments to determine solubility of ionic compounds in different solute-solute and solvent solute interactions. Description We will be mixing ionic compounds in solute-solute and solvent solute interactions. We will be combining sodium, potassium, calcium, magnesium, copper, iron, nickel and silver and some anions like chloride, sulfate, nitrate, oxalate, phosphate, and hydroxide….

Thermochemistry Laboratory Report

Abstract The purposes of these three experiments are to determine the heat capacity of a calorimeter and with that data, confirm Hess’s Law and observe enthalpy changes within reactions. By measuring the change in temperature that occurs with the interaction of two different reactants, we were able to determine both the calorimeter constant and the…

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The Colligative Property

Are you familiar with Colligative Properties? Do you know that these properties are all around us, in our daily lives? Better yet, do you know how these properties affect us? Take a look on the inside scoop of what goes on to the water you sprinkled salt on while cooking Alfredo pasta, or the reason…

Chemistry: Displacement Reactions

Objectives: 1. Learn how to determinate the percent composition 2. Learn how to get the percent using oxidation reduction and double reactions 3. To become more familiar with the use titration techniques 4. To learn how to get the salt out of an quimical Background: To develop and utilize procedures to determine the percent composition,…

Quantitative Determination of Total Hardness In Drinking Water

Abstract This experiment is about the determination of water hardness through the use of complexometric EDTA titration. Determination of water hardness is important to find out the most suitable water hardness under particular circumstances. This was conducted for the purpose of applying the concept of complexometric titration using an efficient chelating agent, EDTA. Sample mineral…

Cordination Compounds

* FLEXIDENTATE CHARACTER OF POLYDENTATE LIGANDS; * Poly dentate ligands have flexi dentate character in the sense that all donors atoms may not form coordinate bonds with the central metal atom or ion. For example; EDTA which is the hexa dentate ligand also acts as tetra dentate or penta dentate in certain complexes. Similarly sulphate…

Carbohydrates Lab Report

Introduction Carbohydrates are essential in foods as an energy source (starch is the main source of human calories), a flavouring (simple sugars are usually sweet) and as a functional ingredient (sucrose allows ice cream to be soft in the freezer; xanthan gum thickens a low-fat salad dressing). Carbohydrates are a type of macronutrient found in…

Vitamin C & DCPIP

Since the number of fruit juice required decolorizing the blue CDPIP solution in decreased in the order: Red pepper >kiwifruit >lemon >orange. Therefore, Red pepper contain the largest concentration of vitamin C, the second is kiwifruit , the third one is lemon and the lest one which contain the least concentration of vitamin C is…

Lab Safety

Lab safety is very important if you are going to work in a science lab. First off, you need the right equipment and you need to read the signs of each machine or are you are working in, so you can see what safety gear you will need to put on. First off, if you…

Physical and Chemical Properties

Did you observer any chemical changes in this experiment? Yes What evidence did you use to decide that something was a chemical change? I observed during the application of the hydrochloric acid to some of the substances bubbling, and smoking Give at least two examples of chemical changes you observed. Green changed from blue to…

Chemical Reaction

Chemical Reactions Lab Objectives: 1. To examine a variety of reactions including precipitation, acid-base, gas forming, and oxidation-reduction reactions. 2. To identify the products formed in these reactions and summarize the chemical changes in terms of balanced chemical equations and net ionic equations. 3. To identify the species being oxidized and reduced in oxidation-reduction reactions…

Importance Of Chemistry

Our entire universe is made up of matter which is constantly changing forms and evolving into other forms of energy. We use chemistry from the beginning of the day till its end, the toothpaste we use to brush our teeth is made of abrasives, fluoride, and detergents. These common household items contain batteries, which make…

Chem 101 Lab Report 2

Mixtures are made up of substances or components. If the mixture is fairly uniform in composition, properties, and its overall appearance, it is homogenous. If the component parts are clearly separated, it is heterogeneous. In order to identify the components in a mixture, methods must be used to sort out the components. However, the same…

Microelectronic Pill

1. ABSTRACT A “Microelectronic pill” is a basically a multichannel sensor used for remote biomedical measurements using micro technology. This has been developed for the internal study and detection of diseases and abnormalities in the gastrointestinal (GI) tract where restricted access prevents the use of traditional endoscope. The measurement parameters for detection include real –…

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