Colloidal chemistry

Analyzing chemical change Abstract Changes can be chemical or physical in nature. If a chemical change is taking place we will be breaking bonds and forming new bonds and therefore creating a new substance. In a Physical change we will have the same substance but simply in a new form. (Dickinson et al. 197). In order to collect evidence to prove a chemical change is occurring we need a change in the indicators. The more active a chemical is the more likely it will have a chemical reaction with

Introduction Fluoride is one of the important heavy metal present in water and waste water. Fluoride ions in water exhibits unique properties, as itsoptimum dosein drinking water is advantageous to health and excess concentration beyond the prescribed limits affects health(5). Also Fluoride ions are extremely toxic to human body. A fluoride ion is attracted by positively charged calcium in Teeth and Bones, due to its strong electronegativity. Major health problems caused by fluoride are dental fluorosis

much from working and competing in Science Olympiad. There were four competitions that were scheduled for me to compete in: Forensics, Chemistry Lab, Game On and Electric Vehicle. There was a lot of preparation and commitment that had to be put in. A slight mishap happened in Forensics we found out that only two teams could compete, so my team had to drop out , Chemistry Lab was mainly basic kinetics and gas laws during Game On we had to learn Scratch and then use that knowledge to create a game, The

Ethan Town Dr. Owens Chemistry 102 Lab, Section 9L 5 March 2014 Spectrophotometric Analysis of an Unknown Mixture Introduction: The experiment at hand involved a lot of different steps and goals, yet the entirety of the experiment was aimed at determining the concentration of Ni2+ and Co2+ ions in an unknown solution. Such an experiment is greatly important and has several benefits. First of all, the experiment teaches and reinforces multiple different skills that every scientist should be

Concentration of Iron in an Unknown Substance Jack Boswell Experiment 5 Megan Otting and Dr. Caster Introduction: The objective of this lab was to determine the concentration of iron (Fe+2) in an unknown substance using a spectrophotometer. Spectrophotometry is a process that uses a sample solution to determine how much light a chemical substance absorbs by measuring the intensity of a beam of light passing through the solution. Every substance transmits light over a specific wavelength range

Diack CH 220C Michael Wood 10/8/14 Experiment 3: Stereochemistry This lab consisted of formulating a mechanism by which dimethyl maleate (cis confirmation) could be isomerized to dimethyl fumarate (trans confirmation) by heat, light, or bromine. In order to investigate chemical properties of when the molecule is in a chiral vs. achiral environment, enantiomers of carvones were compared. Enantiomers and diastereomers are the two classes of stereoisomers. Stereoisomers

INTU Statement I need to understand the various arrangements of elements and its similarities to the periodic table given in the Nelson Chemistry 11 textbook. Periodic Table The periodic table is the chemicals arranged in order of increasing atomic number and grouped with similar chemical properties. There are 7 periods and 18 groups in the periodic table. The periodic table used in the textbook has a total of 118 elements. About Dmitri Mendeleev Dmitri Mendeleev also known as the Russian scientist

Period 1 10/05/15 The Effect of Temperature on Rate of Enzyme Activity of Different Enzymes Abstract/Purpose: The main objective of this experiment was to determine how different factors, such as the type of enzyme and the temperatures that each of the enzymes were exposed to, could affect the rate of enzyme activity. In order to measure this, a potato enzyme and liver enzyme were placed in four different temperatures for 24 hours. Each enzyme was then placed in a test tube with hydrogen peroxide

“Enzymes are catalysts that speed up chemical reactions without being used up in the process” (Leady). A catalyst helps speed up a chemical reaction without being changed during the reaction. Enzymes are specific meaning that they can work with only a specific set of chemical reactions. Most enzyme names end in -ase. The shape of a protein is very important in its function for the reaction. The molecule the enzyme works on is called a substrate. In order for this enzyme to work on this reaction the

Click Chemistry and Application Zhuo Wang Abstract: Discuss the history, mechanism and application of “Click chemistry”. Through the introduction of “Click chemistry”, demonstrate the role it plays in chemical biology filed, the typical synthesis way of this concept, and current application in drug synthesis and research. Keywords: Click chemistry, vivo system, Huisgen 1,3-dipolar cycloaddition, CuAAC, Diels-Alder reaction Introduction: The phrase "click chemistry" was invented by K. Barry Sharpless