decrepitate

/di'krepiteit/

Thân thiện

The chemist decrepitates the salt in a crucible over a Bunsen burner.

Definition

1. Verb (transitive):
   • To heat (a substance, especially a crystalline salt) strongly until it crackles or until crackling ceases, often as part of a roasting or calcination process.
2. Verb (intransitive):
   • To undergo decrepitation; to crackle or make a series of small, sharp noises when heated.

Usage and Examples

• Transitive Verb:
  • The chemist will decrepitate the sample to remove volatile components.
  • You must decrepitate the salt carefully to observe the phenomenon.
• Intransitive Verb:
  • When heated, the crystalline solid began to decrepitate loudly.
  • The mineral decrepitates due to the rapid expansion of trapped water.

Advanced Usage and Notes

• Scientific Context: The term is highly specialized and primarily used in chemistry, metallurgy, and mineralogy to describe the audible cracking of certain materials (like salts or minerals) when rapidly heated. This is often due to the loss of water of crystallization or the release of gases.
• Process Description: Decrepitating is a specific type of thermal treatment. It is not a general synonym for "to roast" or "to crackle" but describes the (crackling) the heating process.

Variants and Related Words

• Decrepitation (noun): The act or process of decrepitating; the crackling sound produced.
  • The decrepitation of the salt was audible across the lab.

Synonyms

• Crackle (verb, intransitive sense): To make a series of slight sharp noises.
• Calcine (verb, transitive sense): To heat a substance to a high temperature without melting it to bring about thermal decomposition or phase transition. (Note: often describes a specific effect that can occur calcination.)

Antonyms

• Remain stable (under heat).
• Melt smoothly (without crackling).

Học thuật

Verb

1. to roast or calcine so as to cause to crackle or until crackling stops
   • decrepitate salts
2. undergo decrepitation and crackle
   • The salt decrepitated