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What is a crucible in a laboratory?


Used from ancient times as a container for melting or testing metals, crucibles were probably so named from the Latin word crux, u201ccrossu201d or u201ctrial.u201d Modern crucibles may be small laboratory utensils for conducting high-temperature chemical reactions and analyses or large industrial vessels for melting and calcining

Thereof, What is a crucible lid used for? Usually made from porcelain or metal, crucibles enable chemical compounds to be heated to very high temperatures. They are sometimes used in conjunction with a loose fitting lid made of a similar material. The lid is purposely loose to allow gases to escape during heating.

What is crucible material? Crucibles are traditionally made from ceramic materials, which can withstand very high temperatures. … They may also be made of steel or iron to melt softer metals such as aluminum and zinc because these metals melt at a temperature below that of the crucible material.

Then What is an example of a crucible? The definition of a crucible is a vessel or container made of materials that resist great heat. An example of a crucible is a container made of graphite or porcelain that melts only at very high temperatures. … A heat-resistant container used to melt ores, metals, and other materials.

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What is ring stand?

Definition of ring stand

: a metal stand consisting of a long upright rod attached to a heavy rectangular base that is used with rings and clamps for supporting laboratory apparatus.

Why is it called The Crucible? A “crucible” is a severe test or trial, which is exactly what happens in the play. Miller intended “The Crucible” as an allegory to McCarthyism. … This is why Miller named the book “The Crucible” after the Salem Witch Trials.

Whats the opposite of crucible? Opposite of a very unpleasant and prolonged experience. delight. happiness. joy. pleasure.

What is a crucible person? Definition of crucible

2 : a severe test He’s ready to face the crucible of the Olympics. 3 : a place or situation in which concentrated forces interact to cause or influence change or development …

What is a lab stand used for?

Lab stands are used in every area of science, especially chemistry, for holding and manipulating an experimental apparatus. If you want to set up a home lab, this is one of the vital pieces of equipment you should consider.

What is retort flask? The simple form of retort, used in some laboratories, is a glass or metal bulb having a long, curved spout through which the distillate may pass to enter a receiving vessel. The design dates back to the cucurbit (flask) used by medieval alchemists.

What is a beaker? : a cup or glass with a wide mouth and usually a lip for pouring that is used especially in science laboratories for holding and measuring liquids. beaker. noun. bea·ker | ˈbē-kər “,Was The Crucible a true story?”

It is a dramatized and partially fictionalized story of the Salem witch trials that took place in the Massachusetts Bay Colony during 1692–93. Miller wrote the play as an allegory for McCarthyism, when the United States government persecuted people accused of being communists.

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What are 5 entertainments forbidden by Puritans?

What were some of the entertainments forbidden by the Puritans in 1692 Salem? No Christmas, no holidays, no theatre, no reading, no “vain enjoyment.”

Who wrote the novel The Crucible?

The Crucible, a four-act play by Arthur Miller, performed and published in 1953. Set in 1692 during the Salem witch trials, The Crucible is an examination of contemporary events in American politics during the era of fear and desire for conformity brought on by Sen. What’s another word for crucible?

In this page you can discover 18 synonyms, antonyms, idiomatic expressions, and related words for crucible, like: trial, tribulation, test, cauldron, melting-pot, ordeal, furnace, vessel, Wyndham’s, visitation and container.

What’s another word for sabbatical?

What is another word for sabbatical?

vacation holiday
break recess
leave furlough
retreat liberty
time off leave of absence

What is a crucible in religion?

The Crucible is set in a theocratic society, in which the church and the state are one, and the religion is a strict, austere form of Protestantism known as Puritanism.

What is crucible effect?

A crucible is, by definition, a transformative experience through which an individual comes to a new or an altered sense of identity. What does crucible mean literally?

What does crucible mean? A crucible is a severe test or trial or an extremely challenging experience. This figurative sense of crucible is based on the literal meaning of the word: a heat-resistant container used to melt metals.

What is wire gauze for?

The wire gauze is usually used to keep glass beakers or flasks from breaking due to heat shock. When a glass beaker is used on a hot burner, the parts that actually touch the burner get hotter than the parts that have air between the burner and the glass. What is a evaporating dish used for in chemistry?

Evaporating dishes (or crystallizing dishes) are shallow bowls with a flat bottom and pour spout that may be used as reaction vessels, or for the separation of the solute from a solution through crystallization.

What is retort heating?

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What is Retorting? Retorting is heating of low acid foods prone to microbial spoilage in hermetically sealed containers to extend their shelf life. The goal of retort processing is to obtain commercial sterilization by application of heat. Who invented retort machine?

Before the advent of modern condensers, retorts were used by many prominent chemists, such as Antoine Lavoisier and Jöns Berzelius. The earliest known use was by Islamic golden age chemist and philosopher Jabir ibn Hayyan c. one thousand years before European chemists.

What is retort machine?

Sometimes also called an Autoclave or Sterilizer, a Retort is a pressure vessel used in the food manufacturing industry to “commercially sterilize” food after it has been placed into its container and the container has been hermetically sealed. More on commercial sterilization later. Who invented beakers?

It was invented by John Joseph Griffin who began his career as a seller and publisher of chemical apparatus. His goal was to improve the popularity of chemistry and penned several books on the subject. Ones which are tall and narrow and are often called Berzelius beakers.

What is low form glass?

Standard or “low-form” (A) beakers typically have a height about 1.4 times the diameter. The common low form with a spout was devised by John Joseph Griffin and is therefore sometimes called a Griffin beaker. … The presence of a spout means that the beaker cannot have a lid. What is watch glass?

A watch glass is a circular concave piece of glass used in chemistry as a surface to evaporate a liquid, to hold solids while being weighed, for heating a small amount of substance and as a cover for a beaker. … In reference to this, large watch glasses are occasionally known as clock glasses.

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