Lab Synthesis

What is the appearance of reactant, Evidence of chemical reaction, and properties of a product?

It is a chemical reaction where the colors of both solution and iron strip changed. It is

The two essays that I choose for the synthesis essay are Parkinson’s Alley by Joy Horowitz and The Environmental Issue from Hell: Global Warming Is the Great Moral Crisis of Our Time by Bill Mckibben. Parkinson’s Alley is about residents in California’s Central Valley town of Visalia who have been diagnosed with Parkinson’s. This part of California has the highest number of people diagnosed with the neurodegenerative disease. The pesticides that are used in the surrounding farms seeps into the water that the residents use every day, causing them to get the disease. The Environmental Issue from Hell: Global Warming Is the Great Moral Crisis of Our Time is about how global warming is a moral crisis that, if not combated

In the experiment the magnesium reacts with the hydrochloric acid to create magnesium chloride and hydrogen. The balanced formula for this is:

This lab could have contained errors. The errors could have happened when performing the lab. Some of the possible errors in this lab are:

The term concentration refers to the amount of a substance present in a certain volume of liquid or gas. Increasing the concentration of the reactants will increase the rate of the reaction. If the concentration of a reactant in a solution is increased, there will be a greater number of particles in a given volume of solution. This means the particles are more likely to collide and therefore react when there are more of them. Collisions between particles are necessary for the reactants to rearrange and form the products. In this experiment, the rate of the reaction between magnesium ribbon and hydrochloric acid will be increased by adding a higher concentration of hydrochloric acid each time. The chemical equation between magnesium ribbon and hydrochloric acid can be written as:

We had to describe the reactants and products and what is taking place during the reaction. Procedures We had to follow seven separate instructions for each of the separate reactions. 1. We had to obtain a small piece of Magnesium. Holding it with forceps, we placed it in the flame of a lit Bunsen burner until there was no more reaction in the Mg.

In this laboratory experiment a synthesis was performed through several separate steps. The purpose of the experiment was to synthesize tetraphenylcyclopentadienone from benzaldehyde and to run reactions on carbonyl containing compounds. There was a total of three steps that led up to the synthesis of the final product, tetraphenylcyclopentadienone. The first step of the experiment was the condensation of benzaldehyde to yield benzoin. Thiamine catalyst along with water and ethanol were added to the benzaldehyde, then NaOH was added until the solution turned yellow. After recrystallization, the product was benzoin. Step two was the oxidation of benzoin to benzil.

After putting the CH2Cl2 to a beaker containing the drying agent anhydrous sodium sulfate, a sticky white solid was recovered.

Purpose: The purpose of this experiment was to observe the many physical and chemical properties of copper as it undergoes a series of chemical reactions. Throughout this process, one would also need to acknowledge that even though the law of conservation of matter/mass suggests that one should expect to recover the same amount of copper as one started with, inevitable sources of error alter the results and produce different outcomes. The possible sources of error that led to a gain or loss in copper are demonstrated in the calculation of percent yield (percent yield= (actual yield/theoretical yield) x 100.

A few more important terms to keep in mind when doing a lab with chemical and physical changes are

Shawna gathered her papers and caught up with Amber, Sonny, and Ruby, who were waiting outside the classroom.

I chose for my enrich topic for this week the subject of the "Synthesis of Urea". I chose this because I like the historical aspect of scientific discoveries. I immediately learned that when you do a Google scholar search for "synthesis of urea" that you get a number of results about modern patents on synthesizing urea. It was sort of difficult to find a historical article on the synthesis or urea in the scientific journal databases. I found a couple of articles from the 1920s that talked about Friedrich Wöhler, the man credited with the first synthesis of urea, "a naturally occurring organic compound from inorganic materials." ("urea". Encyclopædia Britannica. Encyclopædia Britannica Online. Encyclopædia Britannica Inc., 2016. Web. 26 Oct.

Abstract and Overview: The authors of this article studied the facets of metalingustics, specifically morphology (word recognition) and phonology (awareness of word sounds). In addition, the authors emphasized the influences of stress on words and decoding. The article dissected the results of a test done on third graders. The test required students to add or remove suffixes from words, create new words by removing letters from current words, and to recognize words within words. This process was an attempt to assess the influence of morphological and phonological awareness on students’ ability to read and recognize words. The test showed that metalinguistic skills must be present and working together in order for students to comprehend reading

As said before the main purpose of the Chemical and Physical Changes lab was to use observations made in order to determine whether a physical or chemical reaction took place during the experiments. Knowing that during the experiment six smaller procedures were done each of which being observed immediately then again either minutes later or a day later in