Search Results for 'chemistry'
Chemistry, 2nd Edition
Give your student a head start on chemistry with this course by an award-winning educator.
Foundations of Organic Chemistry
Organic chemistry-one of science's most complex fields-is finally made clear with this richly illustrated introductory course taught by an award-winning professor.
Chemistry and Our Universe: How It All Works
Chemistry is the science of how everything interacts. An award-winning professor covers it all-from the periodic table to pH to poisons to plate tectonics.
The Joy of Science
Get an integrated understanding of all of science in this mind-expanding course that weaves together biology, physics, astronomy, chemistry, Earth sciences, and more!
The Nature of Matter: Understanding the Physical World
Explore the science of chemistry, which deals with matter in its infinite variety-from electrons and water molecules to high-tech materials-in this fascinating course.
Understanding the Science for Tomorrow: Myth and Reality
Explore the many possibilities of what your future may look like with this unforgettable survey of today's most advanced research in fields such as engineering, biology, chemistry, and theoretical physics.
The Complete Guide to Baking Bread
Professional chefs share the secrets to making exceptional breads from scratch—and you can learn to make them in your own home.
Epigenetics: How Environment Changes Your Biology
An expert in epigenetics explains the deep chemistry of life.
Mastering Differential Equations: The Visual Method
Embark on an amazing mathematical journey in 24 intellectually stimulating and visually engaging half hour lectures.
The History and Achievements of the Islamic Golden Age
Learn about the many scientific and cultural achievements of one of the most important periods in all of world history, led by an acclaimed lecturer.
The Science of Energy: Resources and Power Explained
An award-winning professor and expert geophysicist presents an unbiased investigation into energy sources.
Understanding the Periodic Table
Understanding the Periodic Table couples a comprehensive overview of the periodic table with in-depth lessons on each of its 118 elements. With Ron Davis Jr. of Georgetown University as your expert guide, you will be able to refine your portrait of one of science’s most iconic images and crucial organizational tools in 24 lessons that combine instructions with experiments and animated lab demonstrations. Spend the first half of the course exploring the history and fundamentals of the periodic table. In part two, move from the top to bottom row to explore the discoveries, subatomic structures, behaviors, and everyday uses of the table’s elements in striking detail.
Radio Astronomy: Observing the Invisible Universe
Explore the thrilling world of pulsars, quasars, and supermassive black holes with an active radio astronomer.
Oceanography: Exploring Earth's Final Wilderness
Probe the ocean depths in this intriguing course that explores what we know about the world's oceans from the tidal zones to the deepest points on the ocean floor.
Science and Religion
Explore how science and religion are two crucial forces that helped shape Western civilization and continue to interact in our daily lives.
The Origin and Evolution of Earth: From the Big Bang to the Future of Human Existence
Explore the frontiers of science with this revolutionary course that rewrites the history of our planet as a single, compelling story involving the coevolution of rocks and life.
The Shape of Nature
How do you mathematically describe the world around you? Discover the fascinating answer with The Shape of Nature, a visually stunning and authoritative guide to the mathematical shapes around you: how they're formed, how they're studied, and how they relate to your life. In 36 lectures, you'll discover the intricate relationship between mathematics and nature, get a pointed introduction to the languages mathematicians use to study shapes and dimensions, and learn how to finally make sense of this abstract—yet undeniably intriguing—subject. And it's all brought to you by Professor Satyan L. Devadoss, a dynamic instructor with an abiding and contagious passion for his field.
Biology: The Science of Life
Get the complete background and professional guidance to explore in depth the fundamental principles of how living things work taught by an award-winning professor at Duke University who has specially adapted his acclaimed introductory biology course.
Trails of Evidence: How Forensic Science Works
Uncover the secrets of forensic science in this absolutely fascinating program that teaches you how science is used to solve criminal mysteries.
Quantum Mechanics: The Physics of the Microscopic World
Peer into the strange and wonderful world of quantum physics with this course that explains how the quantum world works and why it works that way.
The Power of Mind over Body
Dive into the science behind the brain-body connection to understand how our moods, mental states, and the circumstances of our lives impact us in both sickness and in health.
Synthetic Biology: Life’s Extraordinary New Worlds
Synthetic biology gives scientists the power to redesign nature and even create life. Learn how it works.
The Scientific Guide to Health and Happiness
Uncover the essential secrets to a healthy mind and body and empower yourself to take charge of your happiness and life satisfaction. These 24 science-based lessons, taught by Dr. Robin Miller, will introduce you to the many ways that health and happiness are intertwined.
True Crime: Decoding the Evidence
Delve into some of history’s most notorious unsolved crimes with three experts who will guide you through the evidence and shed new light on old mysteries.
Meteorology: An Introduction to the Wonders of the Weather
Gain new insight into the remarkable meteorological phenomena that surround us with this eye-opening course that probes these mysterious forces of nature.
The Science of Gardening
An award-winning horticulturist guides you in developing a science-based, sustainable, vibrant home landscape.
04: Quantitative Reasoning in Chemistry-Density
From: Chemistry, 2nd Edition
Building on the ideas explored in the first three lectures, you examine a fundamental quantitative measurement in chemistry, density, and explore the real-world meaning of this measurement. You then solidify your understanding of this concept by working some basic density problems.
59: Atmospheric Chemistry
From: Chemistry and Our Universe: How It All Works
Now turn to the chemistry of the atmosphere, in particular the 1% composed of gases other than nitrogen and oxygen. Map the structure of the atmosphere, charting its temperature profile. Hear the good and bad news about ozone, and probe the cause of acid rain....
36: The Future of Organic Chemistry
From: Foundations of Organic Chemistry
Finish the course by peering into the future of this fascinating field. How can groundbreaking chemical advancements help us stave off global famine-and even help us live on other planets? By exploring questions like these, you'll truly understand how organic chemistry can help us build a better world.
25: Metals in Organic Chemistry
From: Foundations of Organic Chemistry
Probe the connections between biology and metals with this lecture on some compounds and reactions in the field of organometallic chemistry. As you'll quickly learn, organometallics have a range of practical applications; one example you'll encounter is Dotarem, an organometallic compound used to help detect tumors in cancer patients.
47: Introduction to Organic Chemistry
From: Chemistry and Our Universe: How It All Works
Launch into the first of three lectures on organic chemistry, which is the field dealing with carbon-based molecules, and understand why carbon makes such a versatile molecule. As an example, survey the incredible variety displayed by hydrocarbons, from bitumen (asphalt) to gasoline and methane....
49: Reactions in Organic Chemistry
From: Chemistry and Our Universe: How It All Works
Get a taste of one of the favorite challenges for organic chemists-turning one organic compound into another. Focus on three types of reactions from the many used in organic synthesis: substitution, elimination, and addition. Close by considering the vital role of water in organic chemistry....
60: Chemistry, Life, and the Cosmos
From: Chemistry and Our Universe: How It All Works
Conclude the course by ranging beyond our planet to sample atoms and molecules in the cosmos. Specifically, search for two substances that are prerequisites for life: water and organic molecules. Both turn out to be plentiful, suggesting that the study of chemistry has a long and bright future!...
01: Is Chemistry the Science of Everything?
From: Chemistry and Our Universe: How It All Works
Chemistry is the study of all matter, but matter at a very particular scale-that of atoms and molecules. Professor Davis begins by outlining his approach to this enormous topic and then introduces the periodic table of elements, one of the most powerful conceptual tools ever devised....
13: The Eloquent Chemistry of Carbon Compounds
From: The Nature of Matter: Understanding the Physical World
Delve into the richness of organic chemistry-the study of carbon compounds that have links to living things. Learn some of the basic terminology, and survey common organic compounds such as alkanes, alcohols, ethers, aldehydes, ketones, organic acids, and esters....
12: The Enduring Chemistry of Seawater
From: Oceanography: Exploring Earth's Final Wilderness
Why is the sea salty? Why isn't it getting saltier? Probe these and other mysteries of ocean chemistry, looking at the remarkable stability and uniformity of seawater over time. Also study the role of water and the conjectured role of life in driving plate tectonics.
14: Alchemistry and Chemistry in Early Baghdad
From: The History and Achievements of the Islamic Golden Age
The word "scientist" wasn't invented until the 19th century, but we would nonetheless apply the word to the many scientific thinkers of the Golden Age. Here, you'll witness the process of experimentation that was the start of the scientific method, and you'll see how scientists of the time advanced the field of chemistry....
05: Acid-Base Chemistry
From: Foundations of Organic Chemistry
Focus on the first of several fundamental classes of reactions you'll encounter throughout this course: the proton transfer reaction. You'll learn the three classifications of acids and bases; the Arrhenius, Bronsted-Lowry, and Lewis definitions; how chemists predict proton transfer reaction outcomes; two kinds of intramolecular proton transfer reactions; and more.
18: Limit Cycles and Oscillations in Chemistry
From: Mastering Differential Equations: The Visual Method
Use nullclines and linearization to investigate a startling phenomenon in chemistry. Before the 1950s, it was thought that all chemical reactions tended to equilibrium. But the Russian chemist Boris Belousov discovered a reaction that oscillated for hours. Your analysis shows how differential equations can model this process....
52: Medicinal Chemistry
From: Chemistry and Our Universe: How It All Works
Probe the methods used by researchers to create molecules that can correct medical problems such as inflammation, bacterial infections, and cancer. As an example, study the lock-and-key model of enzyme activity, which explains how many enzymes work, highlighting a potential weak link that can be exploited by drugs....
15: The Chemistry of Food and Drink
From: The Nature of Matter: Understanding the Physical World
Explore the chemistry of food and drink from the point of view of the cook and the consumer. What are the chemicals in an egg, a piece of toast, a slice of bacon, and other typical foods? How does cooking transform them, and how are the chemicals utilized by our bodies?...
57: Chemistry of the Earth
From: Chemistry and Our Universe: How It All Works
Take a short tour of geochemistry, starting at Earth's core and working your way to the surface. Discover why our planet has a magnetic field, how radioactive atoms move continents and build mountain ranges, and why digging a hole to extract resources can produce a chemical catastrophe....
43: Nuclear Chemistry and Radiation
From: Chemistry and Our Universe: How It All Works
The energy stored in chemical bonds pales next to the energy holding atomic nuclei together. Look back to the gradual unlocking of the secrets of the nucleus, the discovery of radiation emanating from elements such as uranium, and the eventual harnessing of this phenomenon for weapons, electrical power, and medical treatments....
58: Chemistry of Our Oceans
From: Chemistry and Our Universe: How It All Works
It is said that water covers 75% of Earth's surface. But chemists know better: more accurately, Earth's surface is bathed in an aqueous solution-a mixture of water and many different dissolved solutes. Focus on dissolved carbon dioxide, methane hydrates, and the quest to extract dissolved gold....
21: Introduction to Chemistry
From: The Joy of Science
Learn why atoms bond to one another, and what makes some types of atoms particularly unstable and reactive. Learn what distinguishes covalent from ionic and metallic bonding. The most versatile of all covalently bonded elements is carbon, the element of life.
01: Why Carbon?
From: Foundations of Organic Chemistry
Start exploring organic chemistry's foundations with a review of the basic science of chemistry (including atomic structure and the periodic table). Then, get an engaging introduction to organic chemistry: its origin, its evolution, its relationship to carbon, and its fascinating applications in everything from food to fuel to medicine.
15: Aldehydes and Ketones
From: Foundations of Organic Chemistry
Continue exploring oxygen's role in organic chemistry. Here, Professor Davis introduces you to the properties and reactivity of two simple carbonyl compounds: aldehydes and ketones. What do we know about these oxygen-containing compounds and their chemistry? And what's their curious connection with how you feel after a night of heavy drinking?
03: Quantitative Reasoning in Everyday Life
From: Chemistry, 2nd Edition
Only a handful of important ideas must be mastered in order to be successful at solving chemistry problems. In this lecture, you review some basic guidelines for approaching any chemistry problem and try out your skills on a few sample problems that demonstrate how you can use everyday reasoning in your chemistry class.
02: Basic Concepts of Quantitative Reasoning
From: Chemistry, 2nd Edition
Introductory chemistry is not mysterious: It requires simple quantitative reasoning that comes naturally to most students. You learn about the types of numbers involved in chemistry and how to solve problems commonly encountered in high school chemistry.
02: The Chemistry of Gluten
From: The Complete Guide to Baking Bread
Discover the important role of gluten, the protein that gives the dough its elasticity and shape. Learn how it develops in the dough and what causes dough to become sticky. Experiment with the dough’s moisture content to determine how that affects gluten development and subsequent bread shape and texture.
17: Amines, Imines, and Nitriles
From: Foundations of Organic Chemistry
Turn now to nitrogen, which has played an important role in the chemistry of life since it began. Learn the chemistry of primary, secondary, and tertiary amines, the simplest of nitrogen-containing compounds. Also, consider imines (containing a pi-bond to nitrogen) and nitriles (where two pi bonds are present), including the simplest and most well-known nitrile: hydrogen cyanide.
22: Sugars and Carbohydrates
From: Foundations of Organic Chemistry
Start taking a more biologically oriented look at the foundations of organic chemistry by investigating compounds known as carbohydrates. Examine Fischer projections of their two main classes, aldoses and ketoses; learn how cyclic sugars help create disaccharides and polysaccharides used in everything from fruit preserves to body armor; and more.
14: Solving Empirical Formula Problems
From: Chemistry, 2nd Edition
Continue your consideration of "classic" chemistry problems with a look at empirical formulas, and examine how empirical formulas relate to molecular formulas
13: Percent Composition and Empirical Formulas
From: Chemistry, 2nd Edition
In this lecture, you encounter two "classic" types of chemistry problems and learn the basic characteristics of each. The lecture concludes with several practice problems to help you master the skill of solving percent composition problems.
09: Alkenes and Alkynes
From: Foundations of Organic Chemistry
How can pi bonds change the chemistry of hydrocarbons? How did one of the greatest rivalries in chemistry lead to an understanding of trends in stability among regio- and stereoisomers with the same molecular formula? Why do terminal alkynes have such unusual acidity? Professor Davis has the answers to these and other questions.
23: Interstellar Chemistry and Life
From: Radio Astronomy: Observing the Invisible Universe
Interstellar clouds favor formation of carbon-based molecules over any other kind-not at all what statistical models predicted. In fact, interstellar clouds contain a profusion of chemicals similar to those that occur naturally on Earth. If planets are formed in this rich soup of organic molecules, is it possible life does not have to start from scratch on each planet?...
10: The Mole
From: Chemistry, 2nd Edition
One of the most important concepts to master in an introductory chemistry course is the concept of the mole, which provides chemists with a way to "count" atoms and molecules. Learn how scientists use the mole and explore the quantitative definition of this basic unit.
11: Substitution Reactions
From: Foundations of Organic Chemistry
Investigate substitution reactions: one of the fundamental mechanisms by which one compound becomes another. The simple molecules you've encountered so far can be altered in targeted ways and once you understand how these reactions work, Professor Davis says you've reached "a palpable threshold in the study of organic chemistry."
14: Alcohols and Ethers
From: Foundations of Organic Chemistry
In this lecture, consider the important role of oxygen in organic chemistry. Among the topics you'll learn about here: the oxygen atom in sp3 hybridization states; techniques for synthesizing alcohols and ethers; and methods for activating alcohols into more reactive leaving groups (specifically sulfonate esters, phosphinate esters, and tosylates).
22: The Chemistry of Carbon
From: The Joy of Science
Carbon's unparalleled ability to form covalent bonds makes it the major focus of modern chemical research. More than 90 percent of known compounds are organic; that is, they contain carbon. Polymers, the chemical building blocks of plastics, form an important class of organic molecules.
01: Introduction and Philosophy
From: Chemistry, 2nd Edition
In this first lecture, Professor Cardulla explains how any student can find success in chemistry by cultivating a meaningful understanding of the concepts and quantitative thinking operations that underlie this often challenging area of study.
07: Elements, Atoms, and the Periodic Table
From: Chemistry, 2nd Edition
In the next three lectures, you cover some fundamental topics that you'll need before you can launch into your study of chemistry. You examine the basic building blocks of matter-elements and the atoms that constitute them-and you learn how to interpret the information about elements presented in the periodic table
05: The SI (Metric) System of Measurement
From: Chemistry, 2nd Edition
Next, you continue to lay a strong foundation for your understanding of chemistry by learning about one of the key tools you'll be using: the International System of Units (SI), or the metric system. This lecture explains why this system is so useful to scientists and lays out the prefixes and units of measurement that make up the metric system.
20: Solving Molarity Problems
From: Chemistry, 2nd Edition
Extend your understanding of molarity by solving some typical problems encountered in the high school chemistry classroom. To foster your understanding of these problems, you are asked to draw upon the quantitative reasoning skills you previously used.
30: Nuclear Magnetic Resonance
From: Foundations of Organic Chemistry
Visit the radio portion of the electromagnetic spectrum for insights into how tiny, atom-sized magnets in organic molecules interact with radio waves (and each other) to produce a complex set of magnetic resonances-which are one of the gold-standard identification tools used in modern organic chemistry. Topics include Zeeman splitting, magnetic spin-spin coupling, and multiplets.
36: Putting It All Together
From: Chemistry, 2nd Edition
In this final lecture, you tackle problems that require you to pull together all the knowledge you've acquired. Through these challenging problems, you build confidence in your ability to unravel new problems and pursue more advanced levels of chemistry.
19: An Introduction to Molarity
From: Chemistry, 2nd Edition
One important idea to master in any introductory chemistry course is the concept of concentration of a solution. Here, you explore this concept, the components that make up a solution, and learn about a basic unit of measurement for concentration, molarity.
50: Synthetic Polymers
From: Chemistry and Our Universe: How It All Works
Starting with the mystery of the ancient Mayan rubber ball, trace the story of polymer chemistry from lucky accidents to the advances of chemist Hermann Staudinger, who in the early 20th century showed that polymers are macromolecules. Learn how synthetic polymers are created....
05: Presolar Dust Grains-Chemistry Begins
From: The Origin and Evolution of Earth: From the Big Bang to the Future of Human Existence
Unravel the story told in "presolar" grains of dust formed by stars very different from our sun. These are the earliest building blocks of our own solar system. Learn how scientists identify these microscopic particles, which often contain diamond crystals. Also see how the field of cosmochemistry is revolutionizing the study of minerals.
12: Hybridization of Orbitals
From: Chemistry and Our Universe: How It All Works
Meet one of the fathers of modern physical chemistry, Linus Pauling. Hear about his theory of orbital hybridization, which solves some of the shortcomings of VSEPR theory by averaging the charge of electrons in different orbitals, accounting for the peculiar geometry of certain molecules....
07: Petroleum: Chemistry, Retrieval, and Use
From: The Science of Energy: Resources and Power Explained
In the first of two lectures on petroleum, examine the science behind this common fossil fuel: how it's formed, how it's found and processed, how it's transported, and how it's used. You'll also gain insights into related topics, including geologic structures such as anticlines and the growth of the petroleum industry....
55: Tapping Chemical Energy: Fuels
From: Chemistry and Our Universe: How It All Works
Explore the chemistry of fuels, which are materials that react with an oxidant to produce energy. Start with cellulose, the primary constituent of wood, then survey petroleum distillates, such as kerosene, diesel, and gasoline. Close by learning how plant oils can be used to make biodiesel, which behaves similarly to petroleum-based diesel....
51: Enzymes - Making Chemistry Work in Cells
From: Biology: The Science of Life
Activation energy is the initial "push" required for a chemical reaction to proceed. This lecture examines the role and function of enzymes in facilitating chemical reactions in cells, which they do by effectively lowering this activation energy.
06: Stereochemistry-Molecular Handedness
From: Foundations of Organic Chemistry
Make sense of a crucial concept in organic chemistry: the handedness of molecules, or, as chemists call it, "chirality." Topics include the definition of chiral tetrahedral centers; the creation of stereoisomer sets via inversion of handedness; and intriguing examples of stereoisomers (including enantiomers and double-bonded stereoisomers) and their unique chiral centers.
54: Chemical Weapons
From: Chemistry and Our Universe: How It All Works
Delve into the dark world of chemistry as a weapon of war. Crude chemical weapons were used in antiquity, but they didn't reach true sophistication and strategic significance until World War I. Profile the father of modern chemical warfare, chemist Fritz Haber, and look at the specific action of a number of deadly chemical agents....
