chemical composition

简明释义

化学组成

英英释义

例句

1.The chemical composition of the air we breathe is crucial for our health and well-being.

我们呼吸的空气的化学成分对我们的健康和幸福至关重要。

2.Understanding the chemical composition of soil can help farmers improve crop yields.

了解土壤的化学成分可以帮助农民提高作物产量。

3.The chemical composition of a substance can affect its physical properties, such as melting and boiling points.

物质的化学成分可以影响其物理性质，例如熔点和沸点。

4.Scientists analyze the chemical composition of ancient artifacts to determine their age and origin.

科学家分析古代文物的化学成分以确定它们的年龄和来源。

5.The chemical composition of water is H2O, which means it consists of two hydrogen atoms and one oxygen atom.

水的化学成分是H2O，这意味着它由两个氢原子和一个氧原子组成。

作文

The study of materials and their properties is fundamental to many scientific disciplines, including chemistry, biology, and materials science. One crucial aspect of understanding any material is its chemical composition, which refers to the identity and quantity of the chemical elements that make up that material. The chemical composition of a substance can significantly influence its physical and chemical properties, such as melting point, boiling point, reactivity, and solubility.For example, consider water, which has the chemical composition of H2O. This means that each molecule of water consists of two hydrogen atoms and one oxygen atom. The unique chemical composition of water gives it distinctive characteristics, such as its ability to dissolve many substances, making it an excellent solvent. Additionally, the chemical composition of water is responsible for its high specific heat capacity, which allows it to absorb a lot of heat without a significant increase in temperature. This property is vital for regulating temperatures in natural environments, impacting weather patterns and climate.In contrast, if we look at sodium chloride, or table salt, the chemical composition is NaCl, consisting of one sodium atom and one chlorine atom. The ionic bond formed between these two elements results in a crystalline structure that dissolves easily in water. Understanding the chemical composition of sodium chloride helps us appreciate why it is used not only as a seasoning but also in various industrial applications, such as in the production of chlorine and sodium hydroxide.Moreover, the chemical composition of a substance can change under different conditions. For instance, when iron rusts, its chemical composition alters from Fe (iron) to Fe2O3 (iron oxide). This transformation highlights the importance of environmental factors, such as moisture and oxygen, in affecting the chemical composition of materials. Rusting not only weakens the metal but also changes its appearance, illustrating how alterations in chemical composition can have practical implications.In the field of medicine, understanding the chemical composition of drugs is essential for developing effective treatments. Each medication is designed with a specific chemical composition to target particular biological pathways or processes. For example, aspirin, with the chemical composition C9H8O4, works by inhibiting enzymes involved in pain and inflammation. Knowing the chemical composition of such compounds allows researchers to create more effective pharmaceuticals with fewer side effects.In conclusion, the chemical composition of a material is a fundamental concept that plays a critical role in various scientific fields. From understanding the properties of everyday substances like water and salt to developing advanced medical treatments, the chemical composition provides insights into the behavior and functionality of materials. As we continue to explore the complexities of matter, a deeper appreciation of chemical composition will undoubtedly enhance our knowledge and capabilities in science and technology.

材料及其特性的研究是许多科学学科的基础，包括化学、生物学和材料科学。理解任何材料的一个关键方面是它的化学成分，指的是构成该材料的化学元素的身份和数量。物质的化学成分可以显著影响其物理和化学性质，如熔点、沸点、反应性和溶解度。例如，考虑水，其化学成分为H2O。这意味着每个水分子由两个氢原子和一个氧原子组成。水的独特化学成分赋予了它独特的特性，例如其溶解许多物质的能力，使其成为一种优秀的溶剂。此外，水的化学成分负责其高比热容，这使得它能够在温度显著上升之前吸收大量热量。这个特性对于调节自然环境中的温度至关重要，影响天气模式和气候。相反，如果我们观察氯化钠或食盐，其化学成分为NaCl，由一个钠原子和一个氯原子组成。这两个元素之间形成的离子键导致了易溶于水的晶体结构。了解氯化钠的化学成分有助于我们欣赏为什么它不仅用作调味料，还用于各种工业应用，例如氯和氢氧化钠的生产。此外，物质的化学成分可以在不同条件下发生变化。例如，当铁生锈时，其化学成分从Fe（铁）变为Fe2O3（氧化铁）。这种转变突显了环境因素（如湿气和氧气）在影响材料的化学成分方面的重要性。生锈不仅削弱了金属，还改变了其外观，说明了化学成分的变化如何对实际产生影响。在医学领域，了解药物的化学成分对于开发有效的治疗方案至关重要。每种药物的设计都有特定的化学成分，以针对特定的生物途径或过程。例如，阿司匹林，其化学成分为C9H8O4，通过抑制与疼痛和炎症相关的酶来发挥作用。了解这些化合物的化学成分使研究人员能够创造出更有效的药物，副作用更少。总之，材料的化学成分是一个基本概念，在各个科学领域中发挥着关键作用。从理解日常物质如水和盐的性质到开发先进的医疗治疗，化学成分提供了对材料行为和功能的深入见解。随着我们继续探索物质的复杂性，对化学成分的更深刻理解无疑将增强我们在科学和技术方面的知识和能力。