...Physical chemistry is the study of macroscopic, atomic, subatomic, and particulate phenomena in chemical systems in terms of laws and concepts of physics. * Chemical kinetics, also known as reaction kinetics, is the study of rates of chemical processes. Chemical kinetics includes investigations of how different experimental conditions can influence the speed of a chemical reaction and yield information about thereaction's mechanism and transition states, as well as the construction of mathematical models that can describe the characteristics of a chemical reaction. * Chemical physics is a subdiscipline of chemistry and physics that investigates physicochemical phenomena using techniques from atomic and molecular physics and condensed matter physics; it is the branch of physics that studies chemical processes from the point of view of physics. * Electrochemistry is a branch of chemistry that studies chemical reactions which take place in a solution at the interface of an electron conductor (theelectrode: a metal or a semiconductor) and an ionic conductor (the electrolyte). * Femtochemistry is the area of physical chemistry that studies chemical reactions on extremely short timescales, approximately 10–15 seconds (one femtosecond, hence the name). The steps in some reactions occur in the femtosecond timescale and sometimes in attosecond timescales,[1] and will sometimes form intermediate products. * Geochemistry is the science that uses the tools and principles...
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...Introductory Chemistry Introduction Instructor: Dr. Tao Tao Course Section: CHEM1405.6013-6014 Meeting Time: TTh 6:00pm-9:10pm Bldg 13-629 Office Hours: TTh 5:30 pm-6:00 pm Contact: tao.tao@lonestar.edu Introductory Chemistry 2 Course Material Requirements • Textbook – Introductory Chemistry, by Nivaldo J. Tro 5th edition • Chapters 1-4, 6-10, 14 • Sections, 5.6-5.10, 12.4-12.8, 13.6-13.8 • Scientific Non-programmable Calculator • Safety Goggles for Lab • Lab Coat/Apron (Optional) Introductory Chemistry 3 Evaluation and Grade • Tests: 45%; 4 tests, best of 3, no make-up unless good excuses (documented, in advance notice) • Open-book Quizzes: 10%; best n-2, no make-up • Laboratory: 25% • Final Exam: 20% • Homework: Encouraged but not mandatory • Problem Set: Provides but not mandatory • Final withdrawal day: Nov. 10th, 2014 Introductory Chemistry 4 Lab Report/Grade Guideline • Pre-lab write-up (30%): Complete before lab starts, will be checked and signed for completeness – – – – Title/Date Aim/Purpose Introduction Procedures • Lab Performance and Quality of data (25%): will be checked and signed when leaving lab – Observations – Collect and record data • Post-lab (40%) – Result (Calculations, Graphs, Interpretations etc), – Discussions/Conclusions – Post-lab questions if any • Overall Report Neatness (5%) • Report due one week after the completion of experiment for full credit; after two weeks, no report will be accepted, and no credit...
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...Just a few months ago, I was arguing with my mother about how chemistry is pretty much everywhere and no one seems to appreciate it. People do not get curious about how we are always using chemistry. It is like if people give for granted that things are the way they are because it is just the way it is. I have listened to the same phrase over and over again every time that I take a chemistry class, “why should we even have to take chemistry? It is not like I am using it every day!” The truth is chemistry is everywhere. Chemistry is even in the smallest and insignificant things like the glow sticks. How they work? What makes them glow? How is chemistry present in them? Glow sticks have plenty of uses. They are used for camping, diving, as a decoration, or just for fun. The only thing that needs to be done in order to make them glow is bend them. But there is something more deeply than just bending the glow stick. These glow sticks involve chemical reactions. The reaction of these chemicals causes a constant release of energy. Atoms in the materials are stimulated, causing electrons to get a higher energy level and then return to their normal levels. When they do this, they release energy as light. This process is better known as chemiluminesence (Harris, 2015). Moreover, light emitting...
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...quarter of 9th grade science we continued our study of chemistry with a focus on chemical formulas, chemical reactions, and stoichiometry. Formative assessments included practice questions on how to write proper names and formulas for chemical compounds, balancing equations, converting between chemical units, and titration problems. The lab experiments for the quarter consisted of a freezing point experiment, chemical flame test comparison, the activity series of four metals, production of hydrogen, and the titration of an unknown concentration of acid. Summative assessments for the quarter were an evaluation of the freezing point experiment, written exploration of the flame test experiment, and two unit exams on chemistry topics. In 10th grade students will study science topics related to biology, environmental science, and some...
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...Chemistry’s Role in Understanding the Dance of Life Is chemistry really important in comprehending life? Is it vital in understanding biology? Can we understand biology or the life per se without the presence of chemistry? As a cliché’ of most textbooks, chemistry is the central science. Meaning it all encompasses the branches of science including biology and physics. And if we try to define what is chemistry, it is said to be the branch of science concerning with the study of matter and the changes it undergoes and the factors that affects these changes. We, the humans, are living things and we are considered to be matter. Living things perform the best gift of God which is life. And the study of life is said to be biology. So therefore, with this simple logic, we can say that chemistry and biology are interrelated with each other. We can’t understand life without some basic knowledge of chemistry. Chemistry is so imperative in understanding life. Specially, the processes that are occurring in our body. We may define the terms respiration, digestion, metabolism, and reproduction scientifically but without proper information about the chemical processes we can’t really appreciate and discern them. Why we breath, digest, metabolize and reproduce has something to do with the latter. Chemistry is very necessary and ponderous in understanding different fields that is associated with the life of plants (botany), animals (zoology), minute organisms...
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...Carmel Vijay Chemistry Lab 227 Zach Sailor November 8, 2013 Observing Chemical Reactions Beginning Question When a chemical reaction takes place, is it always accompanied by a physical change? Explain. Bunsen burner The Bunsen burner is a device in use these days to safely burn a continuous stream of a flammable gas such as natural gas, propane, or butane. The completeness of the combustion reaction affects the amount of air mixed with the gas stream. When a gas stream is well mixed with air, it provides oxygen in an equimolar amount which results in a complete and hotter reaction. We learned how to control the amount of air that is provided for the appearance of a blue flame, which is considered the right flame for a reaction. The evidence that led me to this conclusion was a few articles that explained that the yellow flame or also known as the “dirty flame” leaves behind a layer of carbon on whatever it is heating. Also when tested on a piece of copper wire, it took a longer time for a reaction to occur, whereas the blue flame created a faster reaction which stripped the copper coating off the wire. Chemical reaction The chemical reactions that were chosen, were chose based on which reaction is a more “green” reaction. A1: place a pea-sized amount if baking soda NaHCO3 in a test tube. Add 10-20 drops of vinegar drop wise. B2: place approx. 1Ml of 0.1M of MgCl2 in a test tube. Add an equal volume of NaOH drop wide. Stir well. C1: drop a pea-sized wad of...
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...Importance of Chemistry in Daily Life Most people have chosen to write their essay about how chemistry has played an important role in everyday life. I have chosen to ask, how doesn't it play a role in everyday life? The simple fact is that chemistry plays an important role in every person's daily activities from the moment we're born. So what role does chemistry really play in everyday life? Well, this involvement usually begins first thing each morning. Most people wake up to an alarm or radio. These common household items contain batteries, which make them very chemically dependent. These batteries contain positive and negative electrodes. The positive electrode consists of a carbon rod surrounded by a mixture of carbon and manganese dioxide. The negative electrode is made of zinc. Chemistry plays an important role in the discovery and understanding of materials contained in these and many other common household items. Things like household cleaners and water purification systems are vitally dependent on chemistry. Without chemistry something as simple as scrubbing a toilet without fear of severe burns or small explosions might not be possible. Next, though it isn?t widely known, chemistry is also heavily involved with the manufacturing of things such as makeup and soap. Each time you bathe you are witnessing chemistry at work. Chemicals such as cetyl alcohol and propylene glycol are typical ingredients in the soap used to wash your hair and skin. Without chemistry, these materials...
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...CHEMISTRY CHEMISTRY (CLASSES XI–XII) Rationale Higher Secondary Stage is the most crucial stage of school education because at this stage specialised discipline based, content oriented courses are introduced. Students reach this stage after 10 years of general education and opt for Chemistry with a purpose of mostly for pursuing their career in basic sciences or professional courses like medicines, engineering, technology and studying courses in applied areas of science and technology at tertiary level. Therefore, at this stage, there is a need to provide learners with sufficient conceptual background of Chemistry, which will make them competent to meet the challenges of academic and professional courses after the higher secondary stage. National Curriculum Framework for School Education – 2005 recommends a disciplinary approach with appropriate rigour and depth with the care that syllabus is not heavy and at the same time it is comparable to the international level. It emphasizes a coherent focus on important ideas within the discipline that are properly sequenced to optimize learning. It recommends that theoretical component of Higher Secondary Science should emphasize on problem solving methods and the awareness of Syllabus for Secondary and Higher Secondary Levels 22 historical development of key concepts of science be judiciously integrated into content. The present exercise of syllabus development in Chemistry at Higher Secondary Stage is based on this framework...
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...FOR 8TH GRADE CHEMISTRY Welcome to chemistry. Chemistry is the science of matter and its interactions. Everything around you is made of atoms – atoms and their chemical combinations, molecules. Everything you can see, touch, smell, and taste is made up of chemicals. So, the science of chemistry is a very wide ranging science. Parts can concentrate on how interactions of atoms and molecules allow the nerves in your body to conduct electrical signals. Other parts might concentrate on analyzing clues left by a burglar in order to help the police solve a crime. Still, other parts of chemistry might be involved in making new polymers that might be used by the fashion industry to make more colorful and longer wearing fabrics. If you have access to a computer and the internet, there are a number of excellent tutoring sites to help students gain a better understanding of chemistry. One of the better sites for middle school students Is: www.chem4kids.com/ This site is written at middle school level and has a number of on-line tests that you can use to check your understanding of the material. Several other good internet sites are: http://chemistry.about.com/od/chemistry101/Chemistry_101_Introduction_to_Chemistry.html - Chemistry 101 - a collection of articles and on-line help sites in chemistry http://library.thinkquest.org/10429/low/indexl.htm - ChemWeb on line - an introductory chemistry course on line http://library.thinkquest.org/2923/ - Chemistry Tutor – on line...
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...I am taking a chemistry class and we have been asked to write a chemistry paper for the final assignment. When I started thinking about a topic the wheels started to turn. I than found myself asking the question, what is chemistry exactly? Chemistry is the scientific study of interactions of a chemical substance that are constituted of atoms or the subatomic particles that include protons, electrons, and neutrons. Atoms combine the produce molecules or crystals. Chemistry is often called "the central science" because it connects the other natural sciences such as astronomy, physics, material science, biology, and geology. The genesis of chemistry can be traced to certain practices, known as alchemy, which had been practiced for several millennia in various parts of the world. Then I wonder that a chemical reaction is. A chemical reaction is a transformation of some substances into one or more other substances. It can be symbolically depicted through a chemical equation. The number of atoms on the left and the right in the equation for a chemical transformation is most often equal. The nature of chemical reactions is that a substance may undergo the energy changes that may accompany it are constrained by certain basic rules, known as chemical laws. So what is a chemical law? Chemical laws are those laws of nature relevant to chemistry. The most fundamental concept in chemistry is the law of conservation of mass, which states that there is no detectable change in the quantity...
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...AS/A Level GCE GCE Chemistry A OCR Advanced Subsidiary GCE in Chemistry A H034 OCR Advanced GCE in Chemistry A H434 Vertical black lines indicate a significant change to the previous printed version. © OCR 2008 version 2 – February 2008 QAN 500/2425/5 QAN 500/2347/0 Contents 1 About these Qualifications 1.1 1.2 1.3 1.4 1.5 The Three-Unit AS The Six-Unit Advanced GCE Qualification Titles and Levels Aims Prior Learning/Attainment 4 4 4 5 5 5 2 Summary of Content 2.1 2.2 AS Units A2 Units 6 6 7 3 Unit Content 3.1 3.2 3.3 3.4 3.5 3.6 AS Unit F321: Atoms, Bonds and Groups AS Unit F322: Chains, Energy and Resources AS Unit F323: Practical Skills in Chemistry 1 A2 Unit F324: Rings, Polymers and Analysis A2 Unit F325: Equilibria, Energetics and Elements A2 Unit F326: Practical Skills in Chemistry 2 8 8 20 38 40 51 62 4 Schemes of Assessment 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 AS GCE Scheme of Assessment Advanced GCE Scheme of Assessment Unit Order Unit Options (at AS/A2) Synoptic Assessment (A Level GCE) Assessment Availability Assessment Objectives Quality of Written Communication 64 64 65 66 66 66 67 67 68 5 Technical Information 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 Making Unit Entries Making Qualification Entries Grading Result Enquiries and Appeals Shelf-life of Units Unit and Qualification Re-sits Guided Learning Hours Code of Practice/Subject Criteria/Common Criteria Requirements Arrangements for Candidates with Particular...
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...PROJECT ON NANO TECHNOLOGY CONTENT * INTRODUCTION * WHAT IS NANO SCIENCE? * IS THERE A NANO TECHNOLOGY? * NATIONAL NANO TECHNOLOGY INITIATIVE * CHEMISTRY’S ROLE IN NANO SCIENCE AND NANO TECHNOLOGY * NANO FABRICATION * NANO MEDICINE * RISKS OF NANO TECHNOLOGY * NANO TECHNOLOGY GOALS * SOCIETAL IMPLICATIONS * CONCLUSION INTRODUCTION There have been many influences and drivers for the development of technologies that allow functional components to be constructed at smaller and smaller scale. The semiconductor revolution in the second half of the 20th century was driven by cost, speed, novel function,and power consumption. Semiconductor science and its child, large-scale integration of electronic circuitry, have been responsible for an unprecedented paradigm change in almost every aspect of human life. The change is arguably even more profound than that which resulted from the industrial revolution. As we shall see later in this paper, although the fundamental limits of Moore’s Law have not yet been reached, this and the increasing energy consumption of these paradigm-breaking technologies will necessitate another paradigm shift in the near future.In terms of the influence of individuals, the development of what we now call functional nanoscience clearly owes much to several outstanding scientists, all of whom were awarded the Nobel Prize for their work. Shockley, Bardeen and Brattain’s discovery of the transistor,Kilby’s...
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...helped you better understand how the scientific method is used to create hypotheses and experiments. [pic] 2. Find a media piece—article, video, presentation, song, or other—that recognizes the fundamental concepts of chemistry in biology. Include the reference citation for the piece and describe how it helped you better understand how fundamental concepts of chemistry affect biology. [pic] 3. Find a media piece—article, video, presentation, song, or other—that describes the energy metabolism of cells. Include the reference citation for the piece and describe how it helped you better understand the energy metabolism of cells. [pic] 4. Find a media piece—article, video, presentation, song, or other—that compares structures and functions of different cell types. Include the reference citation for the piece and describe how it helped you better compare structures and functions of different cell types. [pic] 5. Discuss what life means to you after completing questions 1–4. [pic] Citation and Reference page http://www.sciencemadesimple.com/scientific_method.html Science Made Simple, Inc. http://www.infoplease.com/cig/biology/chemistry-biology.html Excerpted from The Complete Idiot's Guide to Biology © 2004...
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...I am taking this course because it is a prerequisite for the dental hygiene program which I will be applying for this spring. My professional goal is to become a dental hygienist in a private dental office. I am a freshman here at Iowa Central and plan on attending for another two years if I get into the dental hygiene program. Some background about me, I graduated from Hampton-Dumont High School in 2017. I was born in Mason City, Iowa and grew up in Hampton, Iowa. I like riding horses in my free time. I also enjoy spending time with my friends and family. On another note, I am nineteen years old and I feel my age. As a young adult, you start to earn more freedom and responsibilities which comes with leaving home and being a college student....
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...born of three children, there names are Lucile and Pauline Pauling. He was also a biochemist, a peace activist, author, and an educator. He was married to a women named Ava Helen Pauling. He lived in Portland, Lake Oswego, Big Sur, and Corvallis. This is where all his contributions to science were completed. Linus was a shy but curious child, he collected insects and minerals in the woods. He also never stopped reading. He first became interested in science because of his friend Lloyd Jeffress. Lloyd kept a small chemistry labratory in his bedroom. Linus was fascinated by these experiments, so he chose to become a chemical engineer. During high school Linus pursued his intrest in science by borrowing metal from an abandoned metal company, to complete experiments. Pauling then went off to college at Oregon Agricultural College, which is now called Oregon Stae University. In college he mainly studied how the chemical and physical properties of substances are like to the structures of atoms...
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