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UNC Chemistry Fundamentals

UNC Chemistry Fundamentals
An Interactive Educational Exercise Because of special formatting tags needed to display exponents, this site is best viewed with Netscape 3.0 or higher. If needed, use the link under Useful Materials to download Netscape About the Chemistry Fundamentals Course This exercise is designed for anyone who wants an introduction or review of the fundamentals of chemistry that will be used in freshman level chemistry classes. This interactive course was used for the first time during the summer of 1997. Evaluations from last year's materials suggested that, while the mathematics and calculator sections were useful, one of the most appreciated benefits of the materials was the review of basic high school chemistry. Currently, this site is used as a resource that can be beneficial to any student that is enrolled in a freshman chemistry course. About these materials How to use these materials The basic procedure is as follows:Take the pre-test for a certain sections. About the Sidebar Related:  chemistry - few periodic rules to rule them all :)Science Resources

Chemical Industry News & Intelligence | Home Common Compound Library A searchable database of over 800 common compound names, formulas, structures, and properties. Companion Notes Hyperlinked notes and guides for first semester general chemistry. Construction Kits Flash-based kits for building chemical formulas, names, equations, and problem solutions. Articles Featured articles, books, and tutorials. Toolbox Interactive graphing, popup tables, and calculators. Tutorials Index of self-guided tutorials, quizzes, and drills on specific topics.

Chemists Without Borders Nonrenewable and Renewable Energy Resources : QUEST There are nine major areas of energy resources. They fall into two categories: nonrenewable and renewable. Nonrenewable energy resources, like coal, nuclear, oil, and natural gas, are available in limited supplies. Since the dawn of humanity people have used renewable sources of energy to survive — wood for cooking and heating, wind and water for milling grain, and solar for lighting fires. Fossil fuels make up a large portion of today’s energy market, although promising new renewable technologies are emerging. This infographic is part of our Energy collection. Discussion Questions for Exploring Careers in Renewable Energy What are some ways that humans used renewable resources for energy centuries or even millennia ago? Links to Learn More Energy Education and Workforce Development, U.S. NGSS Correlations

Useful Chemistry Potential Energy An object can store energy as the result of its position. For example, the heavy ball of a demolition machine is storing energy when it is held at an elevated position. This stored energy of position is referred to as potential energy. Similarly, a drawn bow is able to store energy as the result of its position. When assuming its usual position (i.e., when not drawn), there is no energy stored in the bow. Gravitational Potential Energy The two examples above illustrate the two forms of potential energy to be discussed in this course - gravitational potential energy and elastic potential energy. Gravitational potential energy is the energy stored in an object as the result of its vertical position or height. PEgrav = mass • g • height PEgrav = m *• g • h In the above equation, m represents the mass of the object, h represents the height of the object and g represents the gravitational field strength (9.8 N/kg on Earth) - sometimes referred to as the acceleration of gravity. Fspring = k • x

Chemistry Central blog We are pleased to announce that Professor Liang-Nian He, a Professor of Chemistry at the State Key Laboratory of Elemento-Organic Chemistry, Nankai University, China has joined the Editorial Board for Sustainable Chemical Processes. His research interests include: green synthetic chemistry; synthesis and application of task-specific ionic liquids; catalysis in green solvents such as ionic liquids, PEG and water; CO2 chemistry; biomass conversion, particularly chemical transformations of CO2 into fuels, chemicals and materials; and CO2 capture and utilization. Associate Professor Michael Oelgemöller from James Cook University, Australia also joins us on the Editorial Board. His research activities include synthetic organic photochemistry, solar photochemistry, microflow photochemistry, the development of new photochemical synthesis tools and photochemical water treatment. He is a leading expert in … Read more Following the congress, a selection … Read more Dr. Read more Read more Read more

Kinetic and Potential Energy Kinetic energy is energy possessed by a body by virtue of its movement. Potential energy is the energy possessed by a body by virtue of its position or state. While kinetic energy of an object is relative to the state of other objects in its environment, potential energy is completely independent of its environment. Hence the acceleration of an object is not evident in the movement of one object, where other objects in the same environment are also in motion. For example, a bullet whizzing past a person who is standing possesses kinetic energy, but the bullet has no kinetic energy with respect to a train moving alongside. Interconversion of Kinetic and Potential Energy The law of conservation of energy states that energy cannot be destroyed but can only be transformed from one form into another. When a spring is stretched to one side, it exerts a force to the other side so it can come back to its original state. Etymology Types of Kinetic Energy and Potential Energy Applications References

Royal Society of Chemistry Physical and Chemical Properties of Matter We are all surrounded by matter on a daily basis. Anything that we use, touch, eat, etc. is an example of matter. Matter can be defined or described as anything that takes up space, and it is composed of miniscule particles called atoms. It must display the two properties of mass and inertia. Introduction The different types of matter can be distinguished through two components: composition and properties. Figure 1: Visual With Examples. Physical Properties and Changes Physical Property: A physical property is one that is displayed without any change in composition. Intensive properties: A physical property that will be the same regardless of the amount of matter. density: color: The pigment or shade conductivity: electricity to flow through the substance malleability: if a substance can be flattened luster: how shiny the substance looks Extensive Properties: A physical property that will change if the amount of matter changes. Physical Change Solid is distinguished by a fixed structure.

Quantum aspects of the world The Kinetic Theory of Matter: Definition & The Four States of Matter Everything on Earth is made of matter, but that matter isn't always the same. Matter can exist in four different phases, and the kinetic theory of matter helps us understand the differences between those phases. Explore our library of over 10,000 lessons Click "next lesson" whenever you finish a lesson and quiz. You now have full access to our lessons and courses. You're 25% of the way through this course! The first step is always the hardest! Way to go! Congratulations on earning a badge for watching 10 videos but only scratched the surface. You've just watched 20 videos and earned a badge for your accomplishment! You've just earned a badge for watching 50 different lessons. You just watched your 100th video lesson. Congratulations! Congratulations! You are a superstar! Incredible. You have earned a badge for watching 20 minutes of lessons. You have earned a badge for watching 50 minutes of lessons. You have earned a badge for watching 100 minutes of lessons.

Megalomania's Link Section Kids science: Periodic Table of Elements Science >> Chemistry for Kids The Periodic Table is a way of listing the elements. Elements are listed in the table by the structure of their atoms. Periodic Table of Elements Click for larger view Why is it called the Periodic Table? It is called "periodic" because elements are lined up in cycles or periods. Each horizontal row in the table is a period. Groups Groups are the columns of the periodic table. One example of a group is the noble or inert gases. This lining-up and grouping of similar elements helps chemists when working with elements. Element Abbreviations Each element has its own name and abbreviation in the periodic table. Who invented it? The original periodic table was first proposed by Russian chemist Dmitri Mendeleev in 1869. Fun facts about the Periodic Table Carbon is unique in that it is known to form up to 10 million different compounds. More on the elements and the Periodic Table Elements More Chemistry Subjects