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Celebrating Chemistry is designed to engage and educate children (Grades 4th - 6th) in the basic principles of chemistry and are available in both English and Spanish. Most editions are aligned with either National Chemistry Week (NCW) or Chemists Celebrate Earth Week (CCEW) and contain articles, experiments, and puzzles based on each year's ...
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Several of the CPK colors refer mnemonically to colors of the pure elements or notable compound. For example, hydrogen is a colorless gas, carbon as charcoal, graphite or coke is black, sulfur powder is yellow, chlorine is a greenish gas, bromine is a dark red liquid, iodine in ether is violet, amorphous phosphorus is red, rust is dark orange-red, etc.
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Mole Day originated from a celebration by educator Margaret Christoph. [5] She wrote an article about her experiences in The Science Teacher in the 1980s. [6] Inspired by this article, Maurice Oehler, a high school chemistry teacher from Prairie du Chien, Wisconsin, founded the National Mole Day Foundation (NMDF) on May 15, 1991.
Plaque noting National Historic Chemical Landmark status at the Joseph Priestley House. The National Historic Chemical Landmarks program was launched by the American Chemical Society in 1992 to recognize significant achievements in the history of chemistry and related professions. [1] The program celebrates the centrality of chemistry. The ...
In chemistry, chromism is a process that induces a change, often reversible, in the colors of compounds. In most cases, chromism is based on a change in the electron states of molecules, especially the π- or d-electron state, so this phenomenon is induced by various external stimuli which can alter the electron density of substances. It is ...
The National Registry of Certified Chemists (NRCC) is an American certification agency for chemistry professionals founded in 1967. [ 1 ] In 1999, the organization name changed from National Registry in Clinical Chemistry to National Registry of Certified Chemists to reflect the broader scope of chemists.