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Gilbert cloud chamber, assembled An alternative view of kit contents. The lab contained a cloud chamber allowing the viewer to watch alpha particles traveling at 12,000 miles per second (19,000,000 m/s), a spinthariscope showing the results of radioactive disintegration on a fluorescent screen, and an electroscope measuring the radioactivity of different substances in the set.
The teaching method of POGIL is supported by the POGIL Project, [3] a non-profit 501(c)(3) organization based in Lancaster, Pennsylvania. The project trains faculty to implement POGIL in their classrooms and creates new POGIL materials through opportunities including workshops, on-site visits, and consultancies. The project also hosts an annual ...
By 1917, they sold chemistry sets, which they produced through World War II, in spite of restrictions on materials. Robert Treat Johnson, noting the number of chemistry students at Yale whose interest in the science began with a chemistry set, argued the production of chemistry sets was a "patriotic duty." [5]
In set theory, -induction, also called epsilon-induction or set-induction, is a principle that can be used to prove that all sets satisfy a given property. Considered as an axiomatic principle, it is called the axiom schema of set induction. The principle implies transfinite induction and recursion.
The Nuffield Science Teaching Project was a programme to develop a better approach to teaching science in British [n 1] secondary schools, under the auspices of the Nuffield Foundation. Although not intended as a curriculum, it gave rise to alternative national examinations, and its use of discovery learning was influential in the 1960s and 1970s.
Chemistry education (or chemical education) is the study of teaching and learning chemistry. It is one subset of STEM education or discipline-based education research (DBER). [ 1 ] Topics in chemistry education include understanding how students learn chemistry and determining the most efficient methods to teach chemistry.
In Organic chemistry, the inductive effect in a molecule is a local change in the electron density due to electron-withdrawing or electron-donating groups elsewhere in the molecule, resulting in a permanent dipole in a bond. [1] It is present in a σ (sigma) bond, unlike the electromeric effect which is present in a π (pi) bond.
The Cram's rule of asymmetric induction named after Donald J. Cram states In certain non-catalytic reactions that diastereomer will predominate, which could be formed by the approach of the entering group from the least hindered side when the rotational conformation of the C-C bond is such that the double bond is flanked by the two least bulky groups attached to the adjacent asymmetric center. [3]
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