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An idiom is a common word or phrase with a figurative, non-literal meaning that is understood culturally and differs from what its composite words' denotations would suggest; i.e. the words together have a meaning that is different from the dictionary definitions of the individual words (although some idioms do retain their literal meanings – see the example "kick the bucket" below).
"When Hell freezes over" [2] and "A cold day in Hell" [3] are based on the understanding that Hell is eternally an extremely hot place. The "Twelfth of Never" will never come to pass. [4] A song of the same name was written by Johnny Mathis in 1956. "On Tibb's Eve" refers to the saint's day of a saint who never existed. [5] "When two Sundays ...
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
cold – from "cold enough to freeze the balls off a brass monkey". According to a popular folk etymology, this phrase derives from cannonballs stowed on a brass triangle named after a "powder monkey" (a boy who runs gunpowder to the ship's guns) spilling owing to the frame's contraction in cold weather. (This is however incorrect for several ...
Iron deficiency anemia can intensify symptoms of fatigue and shortening of breath, and can cause cold sensitivity, hair loss, paleness to the skin and nail changes, says Cunningham. It has also ...
The 2014 AP Chemistry exam was the first administration of a redesigned test as a result of a redesigning of the AP Chemistry course. The exam format is now different from the previous years, with 60 multiple choice questions (now with only four answer choices per question), 3 long free response questions, and 4 short free response questions.
This is a list of idioms that were recognizable to literate people in the late-19th century, and have become unfamiliar since. As the article list of idioms in the English language notes, a list of idioms can be useful, since the meaning of an idiom cannot be deduced by knowing the meaning of its constituent words. See that article for a fuller ...