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Dictionary » E » Element ElementDefinition noun, plural: elements (physics, chemistry) A substance that cannot be decomposed into simpler substances by chemical means, and is made up of atoms all with identical number of protons. (general) (1) A fundamental component of a composite entity (such as a vessel element that makes up the vessels in angiosperms). (2) A place or condition best suited or most favorable for an individual (e.g. water is the element of fishes). (3) Any of the formerly theorized building blocks of material universe: water, earth, fire and air.
Common examples of elements are iron, copper, silver, gold, hydrogen, carbon, nitrogen, and oxygen. The combination of these elements form a compound. For instance, the combination of sodium and chlorine atoms results in the formation of a table salt or sodium chloride.
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Results from our forumRe: sterilization in microwave oven... I wrote was to describe how heating steam in a microwave was different to other methods of conductive heat like autoclaves or pressure cookers or element heaters. Autoclaves work under pressure but before they pressurise them selves they actually evacuate the containing air so the resulting gas ...
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Cell counting question... has a high error rate on both low and high concentrations (and pretty high error rate even in the between), because almost always there's some element like pipetting error, cell sedimentation, counting error, bad moon phase or all those combined that affect the outcome. That being said, it ...
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Re: The Colin Leslie Dean species paradox... Approximations are used in chemistry also. One example is in stoichiometry. Moles are approximations of the number of atoms or molecules for an element or compound. A chemist would never know if he is a hundred atoms off when he is mixing chemicals--but he still gets the right reaction, because ...
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A question from Cloning... cross-species cloning, I must say that with current knowledge it is challenging enough to clone an individual even when there is no cross-species element involved, not to mention doing it with cells from different species. However, I think most mammalian eggs are pretty much similar in function, ...
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Lentivirus vector propagationi'm an yeast person, so I am totally out of my element, but I would just look at what species that virus species normally infects and then start from there.
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