Precipitate - définition. Qu'est-ce que Precipitate
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Qu'est-ce (qui) est Precipitate - définition

CHEMICAL PROCESS LEADING TO THE SETTLING OF AN INSOLUBLE SOLID FROM A SOLUTION
Precipitate; Precipitates; Precipitation reaction; Chemical precipitation; Supernatant; Precipitating; Precipitant; Precipitation reactions; Supranate; Crash out; Supernatent; Supernate; Precipitated; Precipitants; Precipitation (geology); 🝟
  • Principle of chemical precipitation in aqueous solution
  • is displaced by]] silver from a [[silver nitrate]] solution it is dipped into, and metallic silver crystals precipitate onto the copper wire.
  • 3+}}.
  • Crystals of ''meso''-tetratolylporphyrin from a [[reflux]] of [[propionic acid]] precipitate on cooling. Photograph of the [[Büchner funnel]] on top of a [[Büchner flask]].

precipitate         
v. (d; tr.) to precipitate into (to precipitate a country into war)
precipitate         
¦ verb pr?'s?p?te?t
1. cause (an undesirable event) to happen unexpectedly or prematurely.
2. cause to move suddenly and with force.
(precipitate someone/thing into) send someone or something without warning into a particular state or condition.
3. Chemistry cause (a substance) to be deposited in solid form from a solution.
cause (drops of moisture or particles of dust) to be deposited from the atmosphere or from a vapour or suspension.
¦ adjective pr?'s?p?t?t done, acting, or occurring suddenly or without careful consideration.
¦ noun pr?'s?p?t?t, -te?t Chemistry a substance precipitated from a solution.
Derivatives
precipitable adjective
precipitately adverb
precipitateness noun
precipitator noun
Origin
C16 (orig. 'hurl down, send violently', later 'cause to move rapidly'): from L. praecipitat-, praecipitare 'throw headlong', from praeceps, praecip(it)- 'headlong', from prae 'before' + caput 'head'.
precipitate         
(precipitating, precipitated)
1.
If something precipitates an event or situation, usually a bad one, it causes it to happen suddenly or sooner than normal. (FORMAL)
The killings in Vilnius have precipitated the worst crisis yet...
A slight mistake could precipitate a disaster.
= bring about
VERB: V n, V n
2.
A precipitate action or decision happens or is made more quickly or suddenly than most people think is sensible. (FORMAL)
I don't think we should make precipitate decisions...
= hasty
ADJ: usu ADJ n
precipitately
Somebody hired from another country is not likely to resign precipitately...
ADV: ADV with v

Wikipédia

Precipitation (chemistry)

In an aqueous solution, precipitation is the process of transforming a dissolved substance into an insoluble solid from a super-saturated solution. The solid formed is called the precipitate. In case of an inorganic chemical reaction leading to precipitation, the chemical reagent causing the solid to form is called the precipitant.

The clear liquid remaining above the precipitated or the centrifuged solid phase is also called the 'supernate' or 'supernatant'.

The notion of precipitation can also be extended to other domains of chemistry (organic chemistry and biochemistry) and even be applied to the solid phases (e.g., metallurgy and alloys) when solid impurities segregate from a solid phase.

Exemples du corpus de texte pour Precipitate
1. Few things precipitate bipartisan agreement so quickly.
2. "I can see it would precipitate some harsh feelings.
3. Heating water causes the bicarbonates to precipitate out.
4. Chavez would like to precipitate that conflict, Quiroz said.
5. "I will take no precipitate steps," Bernanke said.