definite composition

简明释义

一定组成

英英释义

例句

1.Sodium chloride, commonly known as table salt, has a definite composition of sodium and chlorine in a 1:1 ratio.

氯化钠，通常被称为食盐，其明确的成分是钠和氯以1:1的比例结合。

2.In chemistry, a substance with a definite composition will always have the same chemical formula.

在化学中，具有明确的成分的物质总是具有相同的化学式。

3.The mineral quartz has a definite composition of silicon dioxide (SiO2).

矿物石英的明确的成分是二氧化硅（SiO2）。

4.Carbon dioxide is a gas with a definite composition of one carbon atom and two oxygen atoms.

二氧化碳是一种气体，其明确的成分是一个碳原子和两个氧原子。

5.Water is a chemical compound with a definite composition of two hydrogen atoms and one oxygen atom.

水是一种化合物，具有明确的成分，由两个氢原子和一个氧原子组成。

作文

In the realm of chemistry, the concept of definite composition is fundamental in understanding the nature of compounds. A compound is defined as a substance that consists of two or more elements chemically combined in a fixed ratio. This means that regardless of the source from which the compound is derived, its elemental makeup remains consistent. For example, water (H2O) always contains two hydrogen atoms and one oxygen atom. This fixed ratio exemplifies the principle of definite composition, where the proportions of the elements are invariant and characteristic of the compound itself.The significance of definite composition extends beyond the confines of academic chemistry; it has practical implications in various fields such as pharmaceuticals, materials science, and environmental studies. In pharmaceuticals, the precise composition of a drug is crucial for its efficacy and safety. Any variation in the proportions of its components can lead to significant changes in how the drug interacts with the body, potentially resulting in adverse effects or reduced effectiveness.Moreover, in materials science, understanding the definite composition of alloys or polymers is vital for predicting their physical properties and behaviors. Engineers and scientists rely on this knowledge to design materials that meet specific performance criteria, ensuring that products are both safe and effective for their intended uses.Furthermore, the concept of definite composition plays a role in environmental science, particularly in the study of pollutants and their impacts on ecosystems. Identifying the chemical composition of a contaminant can help researchers understand its behavior in the environment, its potential toxicity, and the necessary steps for remediation. For instance, knowing that a certain pollutant has a definite composition allows scientists to predict how it will interact with soil or water, guiding effective cleanup strategies.In conclusion, definite composition is a cornerstone of chemical understanding that permeates various scientific disciplines. Its implications are vast, influencing everything from drug formulation to material design and environmental management. By grasping the significance of definite composition, we can appreciate the intricate relationships between elements and compounds, ultimately leading to advancements in technology, health, and environmental sustainability.

在化学领域，定量组成的概念对于理解化合物的性质至关重要。化合物被定义为由两种或多种元素以固定比例化学结合而成的物质。这意味着无论化合物的来源如何，其元素组成始终保持一致。例如，水（H2O）始终包含两个氢原子和一个氧原子。这种固定的比例例证了定量组成的原则，其中元素的比例是不变的，并且是该化合物特有的。定量组成的重要性超越了学术化学的范畴；它在制药、材料科学和环境研究等多个领域具有实际意义。在制药行业，药物的精确组成对于其功效和安全性至关重要。任何成分比例的变化都可能导致药物与身体相互作用的显著变化，最终可能导致不良反应或降低效果。此外，在材料科学中，理解合金或聚合物的定量组成对于预测其物理性质和行为至关重要。工程师和科学家依赖这一知识来设计满足特定性能标准的材料，确保产品在预期用途上既安全又有效。此外，定量组成的概念在环境科学中也发挥着作用，特别是在污染物及其对生态系统影响的研究中。识别污染物的化学组成可以帮助研究人员了解其在环境中的行为、潜在毒性以及必要的修复步骤。例如，知道某种污染物具有定量组成使科学家能够预测其与土壤或水的相互作用，从而指导有效的清理策略。总之，定量组成是化学理解的基石，渗透到各个科学学科中。它的影响广泛，影响着从药物配方到材料设计再到环境管理的方方面面。通过掌握定量组成的重要性，我们可以欣赏元素和化合物之间错综复杂的关系，最终推动技术、健康和环境可持续性的进步。