pure substances
[ˈpjʊr ˈsʌbstənsɪz]
nounpl: pure substances
substâncias puras
1. Chemical substances composed of a single type of particle with a fixed composition and definite properties, which cannot be separated by physical means
Water and salt are examples of pure substances.
Água e sal são exemplos de substâncias puras.
2. In chemistry, materials that have a specific, uniform composition and consistent chemical properties throughout
Pure substances have fixed melting and boiling points.
As substâncias puras têm pontos de fusão e ebulição fixos.
3. Elements or compounds that are not contaminated or mixed with other substances
The laboratory requires pure substances for accurate experimental results.
O laboratório requer substâncias puras para resultados experimentais precisos.
This is a technical/scientific term used consistently across English and Portuguese-speaking countries in chemistry, physics, and laboratory contexts. It is primarily used in academic and professional scientific settings rather than in casual conversation.
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