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单词 Pure substance
释义

Pure substance

原声例句
Crash Course 综合篇

And pure substances, because they don't have concentrations, aren't included in equilibrium calculations.

这就是为什么水既可以显酸性也可以显碱性。

可汗学院：生物化学

And so just to get our terminology, we call these different substances-- these pure substances that have these specific properties at certain temperatures and react in certain ways-- we call them elements.

因此，为了获得我们的术语，我们称这些不同的物质——这些在特定温度下具有这些特定性质并以特定方式发生反应的纯物质——我们称它们为元素。

中文百科

化学物质 Chemical substance

（重定向自Pure substance）
液态（纯净）水和（纯净）水蒸气是不同形态的同种化学物质。
Tabla de afinidades de Geoffroy
Colors of a single chemical (Nile red) in different solvents, under visible and UV light, showing how the chemical interacts dynamically with its solvent environment.
Native sulfur crystals. Sulfur occurs naturally as elemental sulfur, in sulfide and sulfate minerals and in hydrogen sulfide.

化学物质（纯净物）是由同种分子或直接由同种原子构成的物质。具有特定的化学, 固定的化学性质与物理性质。根据所含微粒性质的不同，可分类为单质和化合物。

化学物质（纯净物）不能用物理方法分离。 能利用化学方法再分出更简单的物质，称之为化合物。而无法经由化学方法再分出更简单的物质，称之为单质

英语百科

Chemical substance 化学物质

（重定向自Pure substance）
Steam and liquid water are two different forms of the same chemical substance, water.
Colors of a single chemical (Nile red) in different solvents, under visible and UV light, showing how the chemical interacts dynamically with its solvent environment.
Native sulfur crystals. Sulfur occurs naturally as elemental sulfur, in sulfide and sulfate minerals and in hydrogen sulfide.
Potassium ferricyanide is a compound of potassium, iron, carbon and nitrogen; although it contains cyanide anions, it does not release them and is nontoxic.

A chemical substance is a form of matter that has constant chemical composition and characteristic properties. It cannot be separated into components by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be chemical elements, chemical compounds, ions or alloys.

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更新时间：2025/6/20 12:12:08