Chemical tests Essays

Analysis of Unknown Samples Through Staining and Chemical Testing (Unknown 8) Abstract: Identifying bacteria by culture is possible due to various tests ranging from staining techniques to biochemical testing. Bacteria have a wide range of variances. To help identify unknown bacteria, gram staining, selective and differential media, analytical profile index (API), and BLAST tests were performed. It resulted in gram negative, rod shaped, lactose fermenting bacteria. The most likely bacterium it could

E. Discussion: In order to synthesize the polymer, Nylon 6,10, we had to complete a few steps to create the chemical reaction that combined sebacoyl chloride and hexamethylenediamine. First we measured the mass of the two graduated cylinders when they were empty, and measured it again after they were filled with sebacoyl chloride and hexamethylenediamine. We did this in order to find the measurements of the reactants. When we measured the graduated cylinder when they were emptied, one weighed at

We have all met someone who has some weird name. It might be hard to pronounce or spelled weirdly. We can feel bad for the child because of their name being mispronounced by teachers or just regular people. Other children might pick on this kid just because they have a weird name. Children are very much affected mentally at their young ages. This is at the time of their personalities developing. Around a week or two ago Kylie Jenner released the name of her first child. Kylie and boyfriend, Travis

Besides observation, questionings and feedback, when asked to talk about other assessment tools that teachers use in their classroom, most of the teachers expressed their confusion. Almost all the teachers said that they used quizzes and short tests to check their students. Teacher D, for example, said: I usually assign whole class multiple choice quizzes and have my students raise their hands to indicate their answers. From that, I can immediately see how well my students understand the lesson.

longer vacation will be associated with many benefits such as increased time for social life, health benefits, and education plus financial gains. Students need time to relax and de-stress. With the accumulation of homework, projects, assignments, tests and quizzes, students are constantly working and have no time to relax. This can be overwhelming, but students still put in the effort just to make it through the year because they know they can rest in the summer. Furthermore, this could cause students

Have you ever felt like there was a problem in the world that you wanted to solve but you didn’t think anyone would listen? Teen activists are people who see the need for change and act upon it. Teen activism starts with a passion for a cause and continues with determination despite being faced with obstacles. Anyone can make a difference in the world, and teen activism proves it; they always support and help causes that they think are important. Teen activists can believe in the same cause, but

Why I think Immigration Should Be Allowed Consider the following thought experiment: Moved by the plight of desperate earthquake victims, you volunteer to work as a relief worker in Haiti. After two weeks, you’re ready to go home. Unfortunately, when you arrive at the airport, custom officials tell you that you’re forbidden to enter the United States. You go to the American consulate to demand an explanation. But the official response is simple, “The United States does not have to explain itself

educational settings, tests are usually considered method of assessment. Testing is a powerful means of improving learning and not just assessing it. Students takes test to assess whatever they have learned, tests like SAT, CAT etc. Various type of tests are conducted in order to assess students knowledge. More often the students takes test in class, they will study more and will space their studying throughout the semester rather than concentrating it just before exams. Test has a powerful positive

Sternberg’s lifelong love-hate affair with intelligence testing is certainly an entertaining, if not eye-opening, read. His grappling with test anxiety and subsequent development of a standardised intelligence test before he was even in his teens had me thinking on the use of Intelligence Quotient (IQ) as a predictor of intelligence. Sternberg’s early struggles as an undergraduate before becoming an authority in psychology leaves me to wonder if what I teach my students in class is really preparing

It was our responsibility to check and see when our tests were graded. I flipped through what felt like weeks’ worth of paper. When I found my equilibrium test in the middle of the pile, I immediately looked for the grade in the lower right portion of the paper. The sight of the big red sixty-five on my test dealt a crushing blow. It was far and away the worst grade I ever earned on an exam, and it did not help my feelings to realize that our tests were weighted to give each student at least a thirty

The underlining pro of mandatory drug testing is it will potentially terminate the families who abuse the system. However, the cons of drug testing are that it will create additional cost to test recipients, violate a person’s privacy, and take money from other programs to pay for the tests. This article is very informative because it provides both the pros and the cons of mandatory drug testing of welfare recipients. This article is useful to my paper because it provides facts without bias

methods. Currently there are three methods used to detect drugs in a person’s system, a urine drug test, oral-fluid drug test, and hair drug test. A hair drug test can detect drug usage as far back as 90 days; it is the best at detecting repeated drug use (“Drug Positivity,” 2016). Urine drug test (the most commonly used) can detect drugs used in over the last one to three days, and oral fluid drug test can detect drugs used in the last 24 to 48 hours (“Drug Positivity,”

took a written test for consideration to be a police officer in one of several cities and towns in southeastern Connecticut on March 16, 1996 (Jordan v. City of New London, 1999). The test was administered by “LEC” which is the Law Enforcement Council of Southeastern Connecticut, Inc. (Jordan v. City of New London, 1999). For the participating police departments, this test was used as an initial screener for likely candidates (Jordan v. City of New London, 1999). This written test utilized the Wonderlic

is using or is on , A drug test is also used to see if someone is on drugs , everyone has their doubts about people so they just might drug test them . Drug test really have one job and that is to see if someone is on drugs , Drug tests can go from as high as fifty dollars to as low as thirty dollars , There are different kinds of drug test , there is the urine drug screen known as the UDS it's a painless test , Another type of drug test is the blood drug test this test does not take long to know

history of the world, there are many many failure who had lead to success in a way, that we can’t belive. A scientist einstein is a big example for us to learn how failure achieve to success. Looking at our daily, we daily fail in our achievement test, but usually a times come when we spark a success. And I had many experiences in my life like that. I am also getting know through my daily life experience also how failure can eventually lead to success. “Defeat is not the worst of failures. Not

the reader to track the hero’s journey and growth through the story. Campbell divides the Heroes Journey into three different phases; Departure, Initiation, and Return. Each phase has certain stages where the hero is faced with unique challenges that test him or her. The 1989 movie Indiana Jones and the Last Crusade, written by George Lucas and directed by Steven Spielberg, meets all the criteria outline by Campbell in the “Hero’s Journey” model;

A rating scale was developed by using the learning outcomes as the criteria for judging student performance on a numerical scale. Gronlund (1973) argued that some objectives required higher levels of achievement to master than others. This was reflected in the descriptors of the particular skill to be evaluated. The numerical scale 4, 3, 2, and 1, reflected excellent, good, fair, and poor respectively. In development of this rubric, assessment was scored out of 12, diagnosis and planning were

A meeting is: ‘An assembly of people for a particular purpose, especially for formal discussion’ Meetings are an effective way that staff can share and exchange information, get feedback, plan, collaborate and make important decisions. Within our school we have many different types of meetings which include ad hoc meetings, governing body meetings, management meetings, one-on-one meetings, staff meetings, team meetings and parent meetings. At staff meetings matters for discussion will include

In the dystopian science fiction book Divergent, Veronica Roth shows how you should be able to stay true to yourself and what you believe no matter what is going on. This theme is important to people, especially younger people, because it says you can be unique, and you shouldn’t have to worry about it. In the book, Beatrice, the main character and Abnegation-born, has to choose what faction to live in and by the rules of in the future city of Chicago. She can either give in to changing to fit in

The book Divergent is set in a futuristic world with new technologies and fascinating scenery. The author has an ability to capture everything in sight, to give you elaborate details of what going on around each scene of the book. The dialogue in this book gives you a feeling of being a character in the book itself. There are many unexpected twist and turns in this book and it definitely keeps you on the edge of your seat. The characters in this book all seem to have unique backgrounds and it exciting