The Half-Life of a chemical reaction can be defined as the time taken for the concentration of a given reactant to reach 50% of its initial concentration.
Some examples of physical properties are color, size, and density. Example of chemical properties are toxicity, half-life, and ability to oxidize. What is a chemical property of elements? A chemical property of elements refers to the changing of the atomic structure of an element into a differ...
half-life n 1.(General Physics) the time taken for half of the atoms in a radioactive material to undergo decay. Symbol:τ 2.(Biology) the time required for half of a quantity of radioactive material absorbed by a living tissue or organism to be naturally eliminated (biological half-life...
meaning it will never reach zero. For each half-life that passes, the number of nuclei is halved, becoming smaller and smaller but never quite vanishing – at least, this is what happens mathematically. In practice, of course, a sample is made up of a finite number of...
Also found in: Dictionary, Thesaurus, Financial, Encyclopedia. bi·o·log·ic half-life the time required for one-half of an amount of a substance to be lost through biologic processes. Farlex Partner Medical Dictionary © Farlex 2012 bi·o·log·ic half-life (bī'ŏ-loj'ik haf'līf...
The meaning of IODINE is a nonmetallic halogen element with atomic number 53 that is an essential nutrient in the human diet and is used especially in medicine, photography, and analytical chemistry —often used before another noun. How to use iodine in
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It is also possible to producehalf-cystineresidues for disulfide cross-links by placing thehalf-cystineresidues in the correct primary sequence, and then adjusting the length of the bisulfide bond between these residues. Chemistry on the computer with HyperChem ...
Carbon-12 and carbon-13 are stable. Carbon-14 is unstable, decaying with a half-life of about 5,700 years. It is produced in Earth's atmosphere by cosmic ray bombardment of nitrogen-14. Example 2 Uranium has three naturally occurring isotopes. These are uranium-234, uranium-235, and uran...
Chemical kinetics, the branch of physical chemistry that is concerned with understanding how fast or how slow chemical reactions occur (that is, their rates). The principles of chemical kinetics apply to purely physical processes as well as to chemical r