To begin Lab 10 of Chem 115, students received permission to start the lab procedure after completion of prelab. First, students made a 25.0 mL of a 0.15 M Malonic Acid and 0.20 M Manganese Sulfate Monohydrate solution and labeled it "Solution 1". After the solution was made, a piece of parafilm was used to seal the flask before mixing it well. Next, a 25.0 mL of a 0.20 M Potassium Iodate solution, using 0.080 M sulfuric acid as a solvent, was made. Before adding the acid, students heated about 25 mL of the acid in a 100 mL volumetric flask.…
1) What is the first and last name of the incumbent, and what is their official title? (e.g. Assistant Director John Smith) Constance Ewing, Analytical Chemist II 2) How did you identify the incumbent? Constance Ewing also has a hairstyling and cosmetic business which operates on the weekends.…
The book, The Disappearing Spoon by Sam Kean explores each of the elements on the periodic table. The Disappearing Spoon focusses on the history of the Periodic Table by telling stories that show how each element affected the scientists that discovered it. For each element, Kean supplies an extensive backstory for its foundation, the common (or uncommon) uses of the element and other useful factoids about the matter. The author begins the novel with a physical description of the Periodic Table as a whole; he discusses the names of the groups of elements and their corresponding properties, atoms and their three major sub-particles, the activity of electrons, and the organization of the Table. Sam Keane then goes on to talk about each element of the Periodic Table, and how that…
The book “The Disappearing Spoon”, by Sam Kean is a book that gives an explanation of basic chemistry. It does a great job informing the readers of how chemistry was literally discovered by only a handful of individuals. Throughout the book their is a strong emphasis on it more so than the other elements. But is…
One of the most important scientific discoveries is that of the atom. The Atom is the smallest unit of matter. “Atoms are mostly empty space” (OI/ https://www.thoughtco.com/interesting-facts-about-atoms-603817). It makes up all the four elements. “There are over 100 different kinds of atoms ”(OI/https://www.thoughtco.com/interesting-facts-about-atoms-603817).Over time the theories about the atom have changed a lot, moving from simple to complex.…
This book caught my attention because it gave a brief history of many of the elements, and I was keen to learn how to incorporate chemistry into my daily life. Synopsis- The Disappearing Spoon starts off with an introduction in which Sam Kean narrates how he fell in love with the science of chemistry, because as a child he broke open mercury thermometers. Each of the…
For instance, Yahweh forms man in his image to live in the Garden of Eden and prosper without harm. Because Yahweh desires pleasure, he crafts man from the Earth itself. From the dry and barren ground, “Yahweh took dust from the earth and shaped it into the form of man, and he breathed life into that form, and it came to life” (28). Because Yahweh creates man from dust, he demonstrates his power and significance. He did not create man from precious stone because he wanted the glory of man to come from his breath, not from the dust.…
“Classifying Chemical Reactions - Lab Report” I - Introduction - Chemistry is the study of the composition, structure, properties and change of matter. In chemistry, chemical and physical changes are used to help scientists understand how different substances react given various circumstances. A chemical change is any change resulting in the formation of a new chemical substance(s). A physical property is any change that does not involve the chemical makeup of a substance at all. In total there are five (5) chemical reactions.…
Chemistry is an umbrella term that refers to any study of properties, compositions, and reactions occurring between elements at an atomic level. Chemistry exists in many forms: biochemistry, theoretical chemistry, and nanochemistry for instance. One form of chemistry, nuclear chemistry, deals with radioactivity and nuclear processes. The most notable of these processes is transmutation. Transmutation refers to the action that changes an atom of a specific element to a different element, either naturally or artificially.…
Introduction: Quantum physics, also known as quantum mechanics, is the branch of physics that uses quantum theory to predict and describe the properties of a physical system. While chemistry is the science of composition, properties, structures, and reactions of matter; it is also known as the ‘central science’. While reading the book Alice in Quantumland by Robert Gilmore, one is able to link the two together, causing a curiosity to learn more. It is amazing to see how the two correlate and work together.…
In this lab, we carried out a variety of reactions using different chemicals and metals. A chemical reaction is when the chemical state of the substance you are testing rearranges its ionic and molecular structure. One of the reactions we experienced was single replacement, this consists of one ion switching places with another ion to form a new compound. Another reaction we saw was double replacement. In this reaction, two compounds ions are switched to form two new compounds.…
Q1)A)i) I(max) = 0.2V/ Rlimit 30mA = 0.2V/ Rlimit Rlimit ≥ 6.67Ω ii)…
Janie was standing by her locker grabbing her chunky chemistry book. She tucked it under her arm and shut the door, ere the girl left to her following class. Janie made sure to preset her locker and proceeded to punch in the three-digit code. She then made her way to the dreaded room, 193.…
As a college student in the twenty first century, a century filled with technology and scientific advances, students are constantly learning from material that was written and developed in a different time period. These works that students are studying, whether they have been used for centuries or decades or merely a few years, are quickly losing there relevance as science and technology grow at an exponential rate. In society today, students are encouraged to use skepticism when learning and to question the material they are analyzing. In the work, Elements, by Euclid, the author structures his argument and thesis around predetermined or defined terms that are his initial chapters of the work. The ability to define these terms helps clarify…
Atomic Theory The atom is the smallest unit of an element. It is composed of two main parts. The nucleus is the central point of an atom. Compacted in that small space are neutrons and protons that constantly jiggle.…