TTC Video – Chemistry and Our Universe – How it All Works

•  Study the models for coping with matter on the atomic scale.
•  Take into account how atoms and molecules can create, devour, and transport probably the most very important commodity within the universe: power.
•  Examine the bodily properties that outline the most typical phases of matter: solids, liquids, and gases.
•  Observe how Graham’s regulation hyperlinks the mass of fuel particles to the speed at which they escape by means of a small aperture, a course of referred to as effusion.
•  See how a desired pH could be achieved by means of regulation of acid-base reactions.
•  Survey the sorts of chemical compounds that may hurt human well being and analyze the variations between a poison, a toxin, and a venom.

Chemistry is the examine of matter and power on the scale of atoms and molecules. As probably the most all-embracing self-discipline there’s, it must be on the prime of everybody’s record of should-study topics. Sadly, chemistry has an undeserved status for problem and abstraction. Any topic that encompasses as many parts as chemistry goes to seem advanced. The great thing about delving into the examine of chemistry is the invention of how organized, logical, constant, and powerfully predictive it turns into—if correctly offered.

 Chemistry and Our Universe: How It All Works is your in-depth introduction to this very important subject, taught over 60 visually revolutionary half-hour lectures which might be appropriate for the chemist in all of us, it doesn’t matter what our background. Masking a yr’s value of introductory normal chemistry on the faculty degree, plus intriguing matters which might be hardly ever mentioned within the classroom, this amazingly complete course requires nothing extra superior than excessive-college math. Using easy ideas, logical reasoning, and vivid graphics that illuminate the wonders of chemistry, these lectures make important ideas crystal clear. Better of all, this extremely interactive method options in depth arms-on, dramatic demonstrations, from which you’ll acquire extraordinary perception into how the universe works.

 Your information is Professor Ron B. Davis, Jr., a analysis chemist and award-profitable trainer at Georgetown College. With ardour and humor, Professor Davis guides you thru the fascinating world of atoms, molecules, and their ceaseless interactions, displaying you tips on how to suppose, analyze issues, and predict outcomes like a real skilled within the subject.

 A Chemistry Course Like No Different

 Chemistry and Our Universe is good for anybody curious in regards to the underlying unity of the fabric world or enthusiastic about such topics as cooking, portray, metalworking, pottery, auto mechanics, gardening, power manufacturing—there are numerous on a regular basis makes use of of chemistry. The concepts you discover in these lectures actually have common purposes. The course may even attraction to these presently concerned in chemistry—from chemistry college students in highschool or faculty to well being professionals, scientists, managers in trade, and others for whom a refresher course taught by an excellent trainer will spark new insights.

 Anybody who sat by means of introductory chemistry in a lecture corridor might be astonished by what laptop-generated graphics and 3-D animations can do to make the topic partaking and comprehensible Professor Davis labored with The Nice Programs manufacturing crew to create a chemistry course like no different, with options together with:

• A digital actuality studio: Professor Davis conducts the course from an augmented actuality set, the place he interacts with chemical equations, splits atoms, rotates molecules, traces the steps in reactions, highlights key factors, and in any other case brings chemistry to life, displaying precisely how chemists take into consideration their topic.
• An actual chemistry lab: Each chemistry course wants a lab, and Professor Davis typically adjourns to an actual laboratory to research the phenomena he has simply been discussing in a lecture. Lab coat, security glasses, and a hazardous supplies allow are required, so don’t strive these experiments at dwelling!
• Utilizing kitchen chemistry: You are invited to strive these demonstrations, which Professor Davis performs in a kitchen. Most kitchen cabinets are nicely-stocked with supplies for chemistry experiments. For instance, a wine bottle could be opened with out a corkscrew due to a phenomenon referred to as the incompressibility of liquids.
• Expanded opinions and apply: Each lecture ends with a assessment of the details lined in that session, typically together with a problem downside to assist crystallize ideas and allow you to take a look at your understanding. The accompanying guidebook reprints all the problem issues—and extra—with labored-out options.

 Setting the Periodic Desk

 Stroll into any chemistry classroom or open any chemistry textbook and you will note the periodic desk of components. It may also be glimpsed on T-shirts, espresso mugs, sneakers, and even eating tables, particularly round universities. Though committing the weather to reminiscence could be the bane of many starting chemistry college students, when you study the simple guidelines for deciphering it, this compendium of information turns into remarkably easy to make use of. Underneath Professor Davis’s skilled steering, you study to learn the various ranges of data within the periodic desk; see how it predicts properties corresponding to melting and boiling factors; and uncover why gaps and mysteries within the first drafts of the desk by its creator, Dmitri Mendeleev, led to key breakthroughs in chemistry.

 Just by ordering the recognized chemical components—the completely different atoms that represent matter—by their relative weights, Mendeleev was capable of uncover patterns amongst components with comparable properties. Furthermore, his early variations of the desk proved to be a veritable treasure map, pointing the best way to new components, new properties, and hinting at new atomic options that have been but to be found. Considered one of these options turned out to be the electron, which, in its many configurations surrounding atoms, explains probably the most notable traits of the chemical world: the bonding of atoms to make molecules, and the best way atoms and molecules mix and recombine in chemical reactions.

 Meet Chemistry’s Best Thinkers

 As you progress by means of Chemistry and Our Universe, you construct an understanding of the various methods wherein atoms could be mixed to create an enormous assortment of supplies. By the final a part of the course, you may be able to survey the advanced chemistry of whole methods—and you might have the chance to take action in lectures dedicated to the Earth, the oceans, the environment, and the cosmos itself.

 All through the course, you meet dozens of main figures within the historical past of chemistry—nice scientists corresponding to Antoine Lavoisier, Joseph Priestley, John Dalton, Marie Curie, Svante Arrhenius, Robert Millikan, Alexander Fleming, and Linus Pauling, to call only a few. You study who they have been, the mysteries they tried to resolve, and the improvements that noticed their names hooked up to new ideas, equations, or scientific legal guidelines. In lots of instances, you get to see demonstrations that illustrate their essential insights, serving to to cement key ideas in your thoughts.

• Predicting reactions: Two experiments—combusting hydrogen fuel and dissolving ammonium nitrate—set you fascinated by exothermic versus endothermic reactions, as first described by James Joule and Ludwig Boltzmann. Then derive J. Willard Gibbs’s ingenious equation for predicting which path a response will take.
• Gasoline legal guidelines: Robert Boyle’s fuel regulation tells you tips on how to inflate a balloon to full quantity with a single breath. With Jacques Charles’s regulation, you possibly can restore a dented ping-pong ball to its authentic form. Additionally study the fuel legal guidelines of Joseph Louis Homosexual-Lussac and Amedeo Avogadro. Lastly, draw on all 4 equations to derive the well-known perfect fuel regulation.
• Historic synthesis: Henry Le Chatelier seen {that a} chemical system in equilibrium readjusts to a brand new equilibrium when disturbed. Observe this impact within the lab, and learn the way Fritz Haber exploited it in a groundbreaking software—the synthesis of ammonia from nitrogen and hydrogen, indispensable for making fertilizers and explosives.
• Splitting the atom: Atoms of uranium-235 randomly fission (break up aside), releasing two neutrons, which may trigger additional fissions. With sufficient neutrons, the response turns into self-sustaining, an occasion first achieved by Enrico Fermi. How does Professor Davis display a sequence response safely? With 96 mousetraps and ping-pong balls!

Placed on Your ‘Chemistry Glasses”

 As befits a topic that offers with everything of the fabric world, your journey in Chemistry and Our Universe covers various territory. By the shut of Lecture 60, you’ll have surveyed the map of the self-discipline, realized the foundational ideas, and ready for deeper exploration in additional superior programs. It is possible for you to to learn science information articles with an enhanced understanding, speak store with chemists, and have knowledgeable opinions in regards to the chemistry behind public coverage points corresponding to power manufacturing and local weather change.

 Above all, you will see that that you’ve got acquired a pleasant accent that provides a brand new dimension to life: ‘chemistry glasses.” Wherever you look—within the drugs chest, within the pure world, in a kitchen drawer, anyplace—you will note issues in a recent and thrilling method. For instance:

• • Medicines: Chemistry tells us how medicines work. Professor Davis follows the stealthy mission of the ibuprofen molecule as it slips into the energetic website of an enzyme that stimulates irritation, thereby lowering swelling and ache. You additionally discover the mechanisms of antibiotics and anti-most cancers medication.
  • Poisons, toxins, and venoms: Find out how poisons, toxins, and venoms differ, with examples of every and the chemical causes for his or her lethality. Within the case of the poison arsenic, the periodic desk reveals that this atom readily substitutes for phosphorus, which has an important function in organic methods.
  • Tarnish no extra! In his lecture on redox reactions, Professor Davis factors out that aluminum is increased on the exercise sequence of metals than silver, which signifies that the silver sulfide ions of tarnish readily quit electrons to aluminum, making aluminum foil an ideal tarnish remover. Test the web for tips about tips on how to do it.
  • Water: Ubiquitous on Earth and in house, water has a particular place in chemistry due to its distinctive properties, which relate to the molecule’s bent form and covalent bond. The significance of water is roofed all through the course, from the macro degree to the micro—together with why steam cleansing is so phenomenally efficient!

”Chemistry is Fantastic!”

Early within the course, Professor Davis presents the pioneering analysis on the chemical bond by considered one of historical past’s best chemists, Linus Pauling, whose work received him the 1954 Nobel Prize in Chemistry. Pauling is really a job mannequin for seeing the massive image, as a result of his understanding of occasions within the atomic realm led him to know the large risks posed by nuclear testing, and his marketing campaign for nuclear disarmament received him a second Nobel Prize, this one for Peace in 1962.

After he retired, Pauling gave a chat at which he couldn’t assist selling his subject. ‘Chemistry is wonderful!” he exclaimed. ‘I feel sorry for people who don’t know something about chemistry. They’re lacking an essential a part of life, an essential supply of happiness—satisfying one’s mental curiosity. The entire world is great and chemistry is a vital a part of it.” After you end these exhilarating lectures, you’ll know precisely what he means.