Prompt 1: A theme that I have noticed in lab that has stood out to me is the importance of being both accurate and precise with your measurements while conducting and experiment in the lab. Given the fact that I only had one chemistry course in high school, I was unsure as to what I should prepare for with a college level chemistry course as well as the lab that went along with it. The one skill that my high school chemistry teacher always scrutinized was the ability of his students to be both accurate and precise with their measurements in the lab. He always would go out of his way to make sure that we were being as accurate and as precise as possible during our lab work. If you were not very careful with your measurements, your grade would …show more content…
Given that this is a beginning level chemistry lab I think that this would be a good idea because the skills that we learn in class this semester will be used in all of the rest of the lab courses that we take until we graduate, and potentially in our chosen career fields for many years after college. The class would run much more smoothly if we were taught how to use Excel because every week while we are in the classroom processing data, our instructor has to stop multiple times to help groups or individuals perform a function in Excel. This would be eliminated by one week of lab devoted to Excel skills. If I had a better knowledge of how to use Excel I believe that I would be much more confident in this class and in each of my future …show more content…
We first used this law in our experiment “Concentration of FDC #1 Blue in Sports Drinks”. I understand how to use the equations necessary to find the answer as proven by my work in this lab (Figure 7), but I do not understand what the variables in the equations mean or how they work. Given the fact that our final is a lab practical based off of our ability to use Beer’s Law in the lab, I believe that it is vital that the use of this law is discussed and taught in more depth and detail than what it has been so far. An idea that is responsible for the majority of our grade in the class is of enough importance to set aside time to better prepare the students for the use of such specific
The laboratory experiment gives the experimenter a greater chance to control the conditions and enables you to measure behaviour with greater precision. This method also allows for quantative research and also enables greater control of variables. Although it gives the experimenter greater control, this can also seem daunting to the subject who may feel more uncomfortable and is less likely to ...
In this experiment, there were several objectives. First, this lab was designed to determine the difference, if any, between the densities of Coke and Diet Coke. It was designed to evaluate the accuracy and precision of several lab equipment measurements. This lab was also designed to be an introduction to the LabQuest Data and the Logger Pro data analysis database. Random, systematic, and gross errors are errors made during experiments that can have significant effects to the results. Random errors do not really have a specific cause, but still causes a few of the measurements to either be a little high or a little low. Systematic errors occur when there are limitations or mistakes on lab equipment or lab procedures. These kinds of errors cause measurements to be either be always high or always low. The last kind of error is gross errors. Gross errors occur when machines or equipment fail completely. However, gross errors usually occur due to a personal mistake. For this experiment, the number of significant figures is very important and depends on the equipment being used. When using the volumetric pipette and burette, the measurements are rounded to the hundredth place while in a graduated cylinder, it is rounded to the tenth place.
X-rays are electromagnetic waves that are like light. They can penetrate materials with masses to different levels. When the x-rays hit the film, it creates an image which shows it like a light would. Since bone, fat, muscle, tumors and other structures all absorb x-rays at different levels, the image on the film lets you see different distinct structures inside the body. This is because of the various levels of exposure on the film.
I have always been inspired by the workings of chemistry and mathematics. My studies of these subjects have developed my understanding and have made me pursue my interest in these two topics. I want to take up chemistry as it involves a large amount of mathematics which I value and understand to be challenging, yet very enjoyable, as there is always an alternative route to obtain the answer. Additionally, I am drawn to the course because it is a mixture of all these exacting subjects, forming a degree that is very demanding and stimulating. Chemists are constantly thinking of new ways to produce viable drugs containing different isomers to improve the pharmaceutical sector using mathematical equations. Chemistry is about innovation, applying information to new areas and how to do things better than they were before, the degree appeals to and fascinates me.
One possible source of experimental error could be not having a solid measurement of magnesium hydroxide nor citric acid. This is because we were told to measure out between 5.6g-5.8g for magnesium hydroxide and 14g-21g for citric acid. If accuracy measures how closely a measured value is to the accepted value and or true value, then accuracy may not have been an aspect that was achieved in this lab. Therefore, not having a solid precise measurement and accurate measurement was another source of experimental error.
Over the years, I have developed an innovative approach to teaching and conducting research with undergraduates through creating and presenting course materials in both laboratory and classroom settings. In my experience, the best teaching involves concrete, hands-on examples, so I engage students in my courses by encouraging the maximum laboratory participation possible.
The Periodic Table is based around the Atomic Theory. Firstly people believed that everything was made up the four elements Earth, Fire, Wind, and Water. This theory evolved into everything being made up of atoms. Breakthroughs throughout history such as the discoveries of the nucleus, protons, neutrons and electrons have pushed this theory forward to where it is today.
The name of this incredible book is The Cartoon Guide to Chemistry by Larry Gonick and Craig Criddle. This book is published by HarperCollins Publishers Inc in 2005. It contains of 244 pages of pure knowledge of chemistry. There are many genres of this book, but the ones that stand out are mathematics, science, and humor. This book consists of the basics of chemistry needed throughout the year. It talks about anything you need to know from the size of a small atom to a huge experiment leading to many new discoveries.
Possible sources of error in this experiment include the inaccuracy of measurements, as correct measurements are vital for the experiment.
Though many people fail to realize it, chemistry is a subject essential to everyday life, due to the fact that it is the branch of science that deals with the identification of the substances of which matter is composed. But what we must understand is that everything in the universe is composed of matter, hence chemistry is necessary in learning more about the world and universe that we live in. There are many careers and fields affiliated with chemistry that people pursue to learn more about the composition of the universe, but for now, let us examine the logistics of three of these careers. These three careers involving chemistry are geochemistry, environmental chemistry, and chemical engineering.
...Some of the concepts we have had to learn include drawing the different elements in a bohr rutherford diagram, balancing chemical equations, types of chemical reactions, and the different types of acids and bases. Overall there were many other things in the unit that were very eye-opening as well, but these four definately helped me as a student have that ‘ah-ha’ moment, and they have definitely helped me learn about chemistry in a more in-depth way, appreciate chemistry and the science behind it a lot more, as well as teaching me something very new things such as how to neutralize Hydrochloric Acid inside of your stomach when it starts to pain. Learning these concepts in the classroom has really opened my eyes to the world in which we live in today, and now personally I will forever hold these memories and knowledge in my mind for when I really need it in my life.
The periodic table, used worldwide by scientists, teachers and students, for quick location of information about elements. The periodic table did not come by overnight though, the periodic table is a table formed from years of work, on the atomic structure. It all started years back with Democritus and his discovery of the atom. This was followed up by John Dalton many years down the track, after elements had been discovered Dalton attempted to create a way to make the elements easier to remember. 84 years later, JJ Thomson discovered electrons, which were key to the periodic table, and in 1889, Dmitri Mendeleev invented the periodic table. Years later Henry Moseley worked out how to measure atomic numbers of elements, and just 9 years after Neil Bohr explained the structure of the atom which further explained why Mendeleev had placed each element in a specific row or column. Finally James Chadwick discovered the neutron in 1922.
How did the world of chemical engineering start, what's the history of chemical engineering? Chemical engineering started with a man named George Davis who is credited with the concept of unit operations. Unit operations is analyzing the process of plants, such as water, petroleum, and petrochemical. They studied and made a process to move around and mix chemicals. Unit operations is the same concept of what we now know as chemical engineering. Davis was given the credit, but in 1977 a professor of chemical engineering reported that in 1880, Davis overheard a chemical manufacturer say something about chemical engineering. Although this was never proven, its still considered Davis’s idea. Chemical engineering is also the reason that the United
For centuries, many scientists and researchers have pondered on the idea of combining two or more substances together to create something new. These explorations have led to the idea of what kind of reactions would occur when diverse elements are combined. This is a concept known as chemistry, a part of science that corresponds with how matter is created from different properties and the process it goes through to create a new substance. Chemistry is a scientific concept that is used in everyday life and is a crucial part in the development of new technology and substances that allow today’s quality of life. The use of chemistry branches off into many different routes, including medical related fields, agriculture, and even in weapons of