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Buffers, titrations, and solubility equilibria. Buffer solutions : Buffers, titrations, and solubility equilibria Titrations : Buffers, titrations, and solubility equilibria Solubility equilibria : Buffers, titrations, and solubility equilibria. Gibbs free energy : Thermodynamics.

Course summary

Redox reactions and electrochemistry. Oxidation-reduction reactions : Redox reactions and electrochemistry Galvanic cells : Redox reactions and electrochemistry Standard cell potentials : Redox reactions and electrochemistry. Electrochemistry, thermodynamics, and equilibrium : Redox reactions and electrochemistry Cell potentials under nonstandard conditions : Redox reactions and electrochemistry Electrolytic cells and electrolysis : Redox reactions and electrochemistry.

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Reaction rates and rate laws : Kinetics Relationship between reaction concentrations and time : Kinetics Arrhenius equation and reaction mechanisms : Kinetics. Spectrophotometry : Kinetics. Nuclear chemistry.

College Resources

Radioactive decay : Nuclear chemistry. Studying for the AP Chemistry exam? Meet the chemistry professional. Meet the chemistry professional : Meet the chemistry professional. Alkanes, cycloalkanes, and functional groups.

Naming alkanes : Alkanes, cycloalkanes, and functional groups Naming alkanes, cycloalkanes, and bicyclic compounds : Alkanes, cycloalkanes, and functional groups Conformations of alkanes : Alkanes, cycloalkanes, and functional groups. Conformations of cycloalkanes : Alkanes, cycloalkanes, and functional groups Functional groups : Alkanes, cycloalkanes, and functional groups. Staff picks. The mole and Avogadro's number Introduction to the atom. Visually understanding balancing chemical equations Balancing chemical equations.

Stoichiometry Stoichiometry. Dalton's atomic theory History of atomic structure.

Introduction to redox reactions Oxidation-reduction reactions. A brief introduction to chemistry. Watch an introduction video 7 minutes 46 seconds. Chemistry is the study of the composition, properties, and reactivity of matter. This may be your first time taking chemistry, but chances are you know a lot already from observing the world around you. We will be covering the material in a first year introductory high school or college general chemistry course.

Chemistry news, research and opinions | Chemistry World

Although these atoms, in turn, are composed of more elementary particles, they are the basic building blocks of chemical substances; there is no quantity of oxygen , mercury , or gold , for example, smaller than an atom of that substance. Chemistry, therefore, is concerned not with the subatomic domain but with the properties of atoms and the laws governing their combinations and how the knowledge of these properties can be used to achieve specific purposes.

The great challenge in chemistry is the development of a coherent explanation of the complex behaviour of materials, why they appear as they do, what gives them their enduring properties, and how interactions among different substances can bring about the formation of new substances and the destruction of old ones. From the earliest attempts to understand the material world in rational terms, chemists have struggled to develop theories of matter that satisfactorily explain both permanence and change.

The ordered assembly of indestructible atoms into small and large molecules , or extended networks of intermingled atoms, is generally accepted as the basis of permanence, while the reorganization of atoms or molecules into different arrangements lies behind theories of change. Thus chemistry involves the study of the atomic composition and structural architecture of substances, as well as the varied interactions among substances that can lead to sudden, often violent reactions. Chemistry also is concerned with the utilization of natural substances and the creation of artificial ones.

Cooking , fermentation , glass making, and metallurgy are all chemical processes that date from the beginnings of civilization. Today, vinyl, Teflon, liquid crystals, semiconductors , and superconductors represent the fruits of chemical technology. The 20th century has seen dramatic advances in the comprehension of the marvelous and complex chemistry of living organisms, and a molecular interpretation of health and disease holds great promise.

Modern chemistry, aided by increasingly sophisticated instruments, studies materials as small as single atoms and as large and complex as DNA deoxyribonucleic acid , which contains millions of atoms. New substances can even be designed to bear desired characteristics and then synthesized. The rate at which chemical knowledge continues to accumulate is remarkable.

Department of Chemistry

Over time more than 8,, different chemical substances, both natural and artificial, have been characterized and produced. The number was less than , as recently as Intimately interconnected with the intellectual challenges of chemistry are those associated with industry.


In the midth century the German chemist Justus von Liebig commented that the wealth of a nation could be gauged by the amount of sulfuric acid it produced. This acid, essential to many manufacturing processes, remains today the leading chemical product of industrialized countries.

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As Liebig recognized, a country that produces large amounts of sulfuric acid is one with a strong chemical industry and a strong economy as a whole. The production, distribution, and utilization of a wide range of chemical products is common to all highly developed nations.