fractional crystallization: meaning, definition, pronunciation and examples
C2Academic, Technical, Scientific
Quick answer
What does “fractional crystallization” mean?
A laboratory or industrial separation process where a chemical mixture is purified by selectively crystallizing different components at different temperatures.
Audio
Pronunciation
Definition
Meaning and Definition
A laboratory or industrial separation process where a chemical mixture is purified by selectively crystallizing different components at different temperatures.
In geology and planetary science, the process by which minerals form in a cooling magma in a specific order, changing the composition of the remaining liquid. By extension, any sequential separation process where components are removed step-by-step based on differing crystallization points.
Dialectal Variation
British vs American Usage
Differences
Spelling: 'crystallisation' is the British variant, 'crystallization' is American. The British spelling is more common in UK-published academic texts, but the American spelling is widely accepted internationally.
Connotations
Identical technical connotations. No significant difference in implied meaning.
Frequency
Equally frequent in respective scientific literature. The term is domain-specific and not used in general conversation.
Grammar
How to Use “fractional crystallization” in a Sentence
[Subject] undergoes fractional crystallization.[Technician] uses fractional crystallization to purify [compound].[Magma] differentiates through fractional crystallization.Vocabulary
Collocations
Examples
Examples of “fractional crystallization” in a Sentence
verb
British English
- The mixture was fractionally crystallised to obtain the pure compound.
- They attempted to fractionally crystallise the alloy.
American English
- The compound was purified by fractionally crystallizing the solution.
- The lab fractionally crystallizes samples routinely.
adverb
British English
- The component separated fractionally crystallised.
- (Extremely rare usage)
American English
- The magma differentiated fractionally via crystallization.
- (Extremely rare usage)
adjective
British English
- The fractional crystallisation process yielded high-purity material.
- They observed fractional crystallisation behaviour in the magma series.
American English
- The fractional crystallization technique is described in the manual.
- Fractional crystallization sequences were modelled.
Usage
Meaning in Context
Business
Rare. Might be used in R&D reports in chemical or pharmaceutical industries.
Academic
Core term in Chemistry, Geology, Materials Science, and Chemical Engineering courses and literature.
Everyday
Virtually never used. An 'expert-only' term.
Technical
The primary context. Describes a standard laboratory/industrial process and a key geological concept.
Vocabulary
Synonyms of “fractional crystallization”
Strong
Neutral
Weak
Vocabulary
Antonyms of “fractional crystallization”
Watch out
Common Mistakes When Using “fractional crystallization”
- Misspelling 'crystallization' (double 'l' often omitted).
- Confusing it with 'distillation' (separation via boiling, not freezing/solidifying).
- Using it as a verb (e.g., 'We fractional crystallized it' is very non-standard; prefer 'We purified it by fractional crystallization').
FAQ
Frequently Asked Questions
No. Recrystallization typically involves dissolving an impure solid in a hot solvent and then letting it cool to form pure crystals. Fractional crystallization refers to the sequential crystallization of different components from a mixture, often without adding a solvent (e.g., from a melt).
Yes, it is a fundamental process in geology. As magma cools underground, different minerals crystallize out at different temperatures (e.g., olivine first, then pyroxene, etc.), changing the remaining liquid's composition and leading to rock diversity.
The chemical, pharmaceutical, and metallurgical industries use it to purify compounds, separate isomers, and refine metals. It's also crucial in producing high-purity silicon for semiconductors.
It is only effective if the components of the mixture have significantly different solubility or melting points. If their crystallization temperatures are too close, the separation will be inefficient and require many repetitive steps.
A laboratory or industrial separation process where a chemical mixture is purified by selectively crystallizing different components at different temperatures.
Fractional crystallization is usually academic, technical, scientific in register.
Fractional crystallization: in British English it is pronounced /ˌfræk.ʃən.əl ˌkrɪs.tə.laɪˈzeɪ.ʃən/, and in American English it is pronounced /ˌfræk.ʃən.əl ˌkrɪs.tə.ləˈzeɪ.ʃən/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None. This is a technical term with no idiomatic usage.”
Learning
Memory Aids
Mnemonic
Think of making rock candy: you dissolve sugar in hot water, then let it cool slowly. The sugar 'chooses' to crystallize out first, leaving other impurities in the liquid – that's a simple version of fractional crystallization.
Conceptual Metaphor
SORTING BY SOLIDITY: The process is like a queue where only people wearing a specific colour (crystallization temperature) can step out of line and become statues, changing the crowd's overall composition.
Practice
Quiz
In a chemistry lab, what is the primary purpose of fractional crystallization?