Chemical substance

Identification of an Unknown Compound to Determine Proper Waste Procedures Department of Chemistry, Michigan State University, East Lansing, MI 48823 October 13, 2015 For completion of CEM 161 Section 009, under supervision of Abstract: In order to determine the identity of the compound we performed many experiments with a solution of the compound. These experiments included testing for all of the following ions; ammonium, halide, sulfate, carbonate, nitrate, and acetate…

A chemical reaction is the change of a molecule from one arrangement to another. Our whole bodies are made up of cells, which are chemical systems. To sustain life there must be chemical reactions all throughout the body (Barnhart and Hopper 2011). At what rate the reaction can occur is dependent on the activation energy. Activation energy is the amount of energy the reactant molecules must surpass for the reaction to occur (Mathew Bui et al. 2006). Temperature and catalysts are the most basic…

visibly different substances and can be separated by physical means. The samples I classified as heterogenous were samples, 4 (Oil and Water), 7 (Sand and Water), 8 (Sand and Sugar) and 9 (Soil). My basis for classifying these samples as heterogeneous was being able to see the different/separate parts that were not uniformly distributed and thinking about how if a sample was taken out, not all of the parts would be evenly distributed in every sample taken out. Two types of pure substances are…

embedded in a matrix are most often found in the famous spanish mines. http://www.minerals.net/mineral/pyrite.aspx Pyrite’s chemical formula is FeS2, which is the same as the much rarer mineral, Marcasite. Even though these two have the same chemical formula, they both crystallize differently, causing them to be classified as different minerals. Sharing the same chemical formula causes these two minerals to be mislabeled, since their physical characteristics are so similar, and the only real…

The unknown compound we received consisted of white crystal-like particles and was a solid at room temperature. During the smell test, we did not receive any indication of a distinct smell, thus concluding that the compound is ionic. The solubility tests indicated that the compound was soluble in water, NaOH, and HCl and non-soluble in acetone and toluene as shown in Table 1. The compound was soluble in water indicating that the compound is either polar or ionic, but not soluble in toluene or…

Goals The goal of the lab was to investigate the properties and structure of an unidentified compound that was discovered in a local landfill. The group was called in to help determine the chemical and physical properties of the compound so we can let the people of the town know so it can be taken care of properly with or without further precautions to be taken. Another goal of this project was to devise the synthesis of the unknown compound. Experimental Design In order to determine the…

Beginning Question: How effectively and efficiently can biphenyl be synthesized by a Suzuki coupling reaction? Claims: Biphenyl synthesized by a Suzuki coupling reaction was effectively isolated and then characterized using TLC, melting point, IR and 1H NMR tests. However, this process was not efficient because it had a poor pure yield of 22%. Evidence: The goal of the experiment was to synthesize biphenyl product by a Microwave-assisted Suzuki reaction and this was carried out using 1…

Fair Research Paper Honors Chemistry Group Number 8 Research Paper The science fair topic at hand is whether or not chemical compounds affect water 's heat resistance/reception. In other words, how does the temperature of water (H2O) change when chemical compounds - such as sodium chloride and sucrose - are added? In this experiment, the independent variable is the chemical compound being tested while the dependent variable is the temperature of the water. The constants are the surface…

Aeshah Alrubayyi CHM 643 Reactive intermediate has been important investigated in physical organic chemistry. It classes to carbocations, carbenes, carbanions and free radicals. Recently, observable intermediate classified as reactive, and an unobservable intermediate is kinetically when occurs at a branch point in a mechanism. A reactive intermediate is formed in the rate determining step of a reaction and then goes to give products in low barrier. Also, the hydrocarbon reaction of terminal…

Between 1942 and 1953 there was active dumping of chemicals waste into the canal. Document submitted by Hooker to New York interagency task force of hazardous waste, showed that an estimate of about 21,800 tons of chemicals waste from the manufacturing process of the company was dumped in the canal. “These waste were mainly organic pesticide residues, waste solvents, fly ash and process…