Chemical Reduction
Chemical Reduction - Related Videos
03:11
Oxidation-Reduction Reactions
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2020
Oxidation–Reduction Reactions Earth’s atmosphere contains about 20% molecular oxygen, O2, a chemically reactive gas that plays an essential role in the metabolism of aerobic organisms and in many environmental processes that shape the world. The term oxidation was originally used to describe chemical reactions involving O2, but its meaning has evolved to refer to a broad and important reaction class known as oxidation–reduction (redox) reactions. Some redox reactions involve the transfer of...
02:37
Types of Chemical Bonds
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2020
Chemical bonding theories were pioneered by American chemist Gilbert N. Lewis. He developed a model called the Lewis model to explain the type and formation of different bonds. Chemical bonding is central to chemistry; it explains how atoms or ions bond together to form molecules. It explains why some bonds are strong and others are weak, or why one carbon bonds with two oxygens and not three; why water is H2O and not H4O. Ionic Bonds Ions are atoms or molecules bearing an electrical charge.
03:03
Chemical Reactions in Aqueous Solutions
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2020
Chemical substances interact in many different ways. Certain chemical reactions exhibit common patterns of reactivity. Due to the vast number of chemical reactions, it becomes necessary to classify them based on the observed patterns of interaction. Water is a good solvent that can dissolve many substances. For this reason, many chemical reactions take place in water. Such reactions are called aqueous reactions. The three most common types of aqueous reactions are precipitation, acid-base, and...
02:52
Chemical Formulas
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2020
A chemical formula presents information about the proportions of atoms constituting a particular chemical compound or molecule, mainly using symbols of elements and numbers. At times other symbols, such as dashes, parentheses, brackets, commas, plus, and minus signs, are also used. A chemical formula can be one of three types – molecular, empirical, and structural. Molecular Formula The molecular formula represents a molecule or a chemical compound using chemical symbols (to indicate the...
09:20
A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction
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Cited by 12 •
2016
We present a method to control the interfacial energy of a liquid metal in an electrolyte via electrochemical deposition (or removal) of a surface oxide layer. This simple method can control the capillary behavior of gallium-based liquid metals by tuning the interfacial energy rapidly, significantly, and reversibly using modest voltages.
FAQs
Electron gain does not occur in isolation: a reducing agent transfers electrons while another substance accepts them, and the donor is correspondingly oxidized. This paired redox relationship lets biochemists track both partners, oxidation-state changes, and the direction of electron flow. It also explains how cells couple reduction to energy capture and redox balance.
NADH and NADPH serve as reducing agents by carrying transferable reducing equivalents to particular electron acceptors. The transfer may occur through hydrogen atoms or hydride ions, depending on the reaction description. Once delivered, those electrons alter the acceptor’s molecular structure and reactivity, linking these cofactors to metabolic and biosynthetic transformations.
In biochemical systems, reduction is directed toward a specific electron acceptor rather than occurring indiscriminately. Studying enzyme mechanisms helps identify how the transfer is organized and how electron gain changes that molecule’s structure and reactivity. That connection is important because the reduced product can participate in subsequent metabolic or biosynthetic transformations.
Begin by identifying the electron donor and the specific acceptor, then determine how electrons move between them, whether hydrogen atoms or hydride ions are involved, and how the acceptor’s oxidation state changes. Finally, relate that structural change to its altered reactivity and to the larger metabolic or biosynthetic pathway.
In cellular respiration and photosynthesis, electron-transfer reactions help connect molecular transformations with energy capture. Following the reduction step shows which acceptor receives electrons and how its structure changes during the pathway. Comparing these reactions with biosynthetic reductions also highlights that the same core electron-transfer principle can support both energy-related and molecule-building processes.
Reduction matters for antioxidant activity because antioxidant chemistry depends on controlling electron-transfer reactions rather than viewing oxidation alone. Tracking reducing agents and acceptors helps explain how cells maintain redox balance while molecules are converted. This perspective also connects antioxidant processes with the broader biochemical roles of reduction in respiration, photosynthesis, and biosynthesis.