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A chemical reaction is a process by which the bonds in the atoms of substances are rearranged to generate new substances. Matter cannot be created or destroyed in a chemical reaction—the same type and number of atoms that make up the reactants are still present in the products. Merely, the rearrangement of chemical bonds produces new compounds.
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A chemical symbol is an abbreviation used to indicate an element or an atom of an element. For example, the symbol for mercury is Hg. The same symbol is used to indicate one atom of mercury (microscopic domain) or to label a container of many atoms of the element mercury (macroscopic domain).
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Hydronium and hydroxide ions are present both in pure water and in all aqueous solutions, and their concentrations are inversely proportional as determined by the ion product of water (Kw). The concentrations of these ions in a solution are often critical determinants of the solution’s properties and the chemical behaviors of its other solutes. Two different solutions can differ in their hydronium or hydroxide ion concentrations by a million, billion, or even trillion times. A common...
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If a reaction has a small equilibrium constant, the equilibrium position favors the reactants. In such reactions, a negligible change in concentration may occur if the initial concentrations of reactants are high and the Kc value is small. In such circumstances, the equilibrium concentration is approximately equal to its initial concentration. This estimation can be used to simplify the equilibrium calculations by assuming that some equilibrium concentrations are equal to the initial...
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The use of enzymes by humans dates to 7000 BCE. Humans first used enzymes to ferment sugars and produce alcohol without knowing that this was an enzyme-catalyzed reaction. Wilhelm Kuhne coined the term 'enzyme' in 1877 from the Greek words ‘en’ meaning ‘in’ or ‘within’ and ‘zyme’ meaning ‘yeast.’
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In aromatic compounds, such as benzene, the circulation of (4n + 2) π-electrons sets up a diamagnetic or diatropic ring current around the perimeter of the molecule. This current induces a magnetic field that opposes the external field inside the ring and reinforces it on the outside. The protons in benzene are deshielded and exhibit high chemical shifts in the range 6.5–8.5 ppm. The shielding effect at the center of the ring is evident in complex aromatic molecules, such as...
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Chemistry - A European Journal Turns 30.

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Chemistry - A European Journal celebrates 30 years of excellence in chemical research. The journal remains dedicated to showcasing innovation and adapting to the evolving landscape of modern chemistry.

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Area of Science:

  • Chemistry
  • European Chemistry
  • Chemical Research

Background:

  • Celebrating the 30th anniversary of Chemistry - A European Journal.
  • Reflecting on the journal's development and legacy over three decades.
  • Highlighting the journal's commitment to representing contemporary chemical science.

Discussion:

  • The journal has consistently upheld standards of excellence and innovation.
  • It has adapted to emerging trends and new topics within the chemical sciences.
  • The editorial reflects on the journal's significant contributions to the chemistry community.

Key Insights:

  • The journal's enduring legacy is built on quality and forward-thinking content.
  • Adaptability is crucial for scientific journals to remain relevant.
  • Thirty years signifies a milestone of sustained impact in chemical publishing.

Outlook:

  • Continued commitment to excellence and innovation in chemistry.
  • Focus on representing modern chemistry and its advancements.
  • Anticipation of further adaptation to emerging trends and future directions in the field.