Chemical substance

In Chemistry 2017-2018 I learned many things that can help out in daily life to keep others safe and to improve things. One thing that can be useful is knowing basic chemicals and elements to be safe and know what is inside things you have in everyday life. Knowing chemicals is good to know not to mix certain things that can possibly be dangerous or hazardous to your-self or others. Knowing not to mix ammonia and bleach is good because when mixed causes an toxic gas that can harm you, others,…

fund clinical studies for public health and safety, to research potential risks of mental illness, and regulate publications about the relationship between medical and recreational cannabis. Cannabis may be defined as a psychoactive drug, a chemical substance that changes brain…

Chemistry, DePaul University, 1110 W. Belden Avenue, Chicago, IL 60614 panerjesse@yahoo.com May 1st, 2017 Abstract Green chemistry emphasizes the utilization of chemicals to their highest efficiency and reducing the production of harmful waste. This type of chemistry was initially conceived in order to reduce the damaging impact that chemical products have on the environment. Through a series of experiments known as the cyclohexanol cycle, green chemistry was observed. The first experiment of…

Bob and the Blob Bob knew that he should not have mixed those chemicals together, but the resulting giant blob that ate up the school was not really his fault. How could he have known, that by mixing hydrochloric acid, potassium iodine, copper sulfate and some of the “secret” substance behind the teacher’s desk would have resulted in an omnivorous, gelatinous blob? However, he was blamed nevertheless. The chemistry class that Bob attended had few rules that had to be explained, as most were what…

the relationship between the relative quantities of substances taking part in a reaction or forming a compound. The coefficients in a balanced chemical equation represent moles of reactants and moles of products. The mole ratio of reactants and products in a balanced equation must remain constant. Stoichiometry relates to cookies because all the ingredients mixed together make the cookies. In the process of mixing elements in during chemical reactions the precision of measures of…

the chemistry stockroom to be able to dispose of it properly. This lab demonstrated the process of identifying an unknown compound as well as synthesizing the compound. Identifying the compound consisted of performing various tests to detect the chemical and physical properties of the compound and comparing it to the list of possible compounds. The tests conducted were the solubility test which the compound fully dissolved in water, the flame test which had no discoloration when held in the…

There are so many chemical reactions and it is important to classify a chemical reaction to understand the reaction and predict the products. In this lesson, we will discuss the definition and go over examples of a combination reaction. !!!What is a Combination Reaction? Putting furniture together, combining ingredients to make something delicious – these things can be fun activities and we look forward to the results. Each individual component is not very exciting by itself. However, if we…

Purpose: The objective is to separate the heterogeneous mixture of salt, iron filings, and salt into each pure form using filtration, evaporation, and magnetism. Background: When separating a mixture, preferably to separate a mixture that includes a soluble liquid and a insoluble solid, filtration is the best because solid molecules are bigger than liquid molecules. A filter contains pores that are small enough to let small partials though the pores while holding back the larger particles.…

Identifying Unknown Substance. Examining the physical characteristics of the available compounds in the lab was how possible compounds were eliminated from any or further testing. Based on how the compounds physically looked, it was almost for certain that calcium chloride was the unknown compound. However, another compound was used to test as well (ammonium chloride) since relying only on physical characteristics alone would not allow for proper experimentation. The unknown ended up being…

The Identification of an Unknown Substance Using a Series of Tests Project 2 Chemistry 111 – 552 Peyton Farmer*, Primary Author Partners: Jacob Hicks and Abigail Boudreau TA: Ming Uei Hung Introduction The purpose of this experiment was to use elimination and confirmation tests for both cations and anions, which then allowed the unknown substance to be identified by using logic trees of known solutions. Some qualitative characteristics of chemicals such as the formation of a precipitate, the…