molecular force

简明释义

分子力

英英释义

例句

1.The strength of the material depends on the molecular force (分子力) between its particles.

材料的强度取决于其颗粒之间的分子力。

2.Different substances have varying molecular forces (分子力), affecting their boiling points.

不同物质具有不同的分子力，影响其沸点。

3.When water freezes, the molecular force (分子力) increases, causing it to expand.

当水结冰时，分子力增强，导致其膨胀。

4.The molecular force (分子力) between lipids determines the structure of cell membranes.

脂质之间的分子力决定了细胞膜的结构。

5.In chemistry, the molecular force (分子力) is crucial for understanding reactions.

在化学中，分子力对理解反应至关重要。

作文

Understanding the concept of molecular force is fundamental to grasping the principles of chemistry and biology. Molecular force refers to the attractive or repulsive interactions between molecules, which play a crucial role in determining the properties of substances. These forces can be classified into several types, including hydrogen bonds, van der Waals forces, and ionic bonds. Each type of molecular force has its unique characteristics and implications for how substances behave in different environments.For instance, hydrogen bonds are a type of molecular force that occurs when a hydrogen atom covalently bonded to an electronegative atom, such as oxygen or nitrogen, experiences an attraction to another electronegative atom. This interaction is significant in biological systems, particularly in the structure of DNA and proteins. The stability of these macromolecules largely depends on the presence of hydrogen bonds, which help maintain their three-dimensional shapes and facilitate biological functions.On the other hand, van der Waals forces are weaker than hydrogen bonds but are still essential in understanding molecular interactions. These forces arise from temporary dipoles that occur when electrons move around a nucleus, creating a momentary imbalance in charge distribution. Although individually weak, collectively, they can significantly influence the physical properties of substances, such as boiling and melting points. For example, the low boiling point of noble gases can be attributed to the weak molecular forces acting between their atoms.Ionic bonds represent another form of molecular force, formed when one atom donates an electron to another, resulting in the attraction between positively and negatively charged ions. This type of bonding is prevalent in salts, like sodium chloride. The strength of ionic bonds and the resulting molecular forces contribute to the high melting and boiling points of ionic compounds, making them solid at room temperature.The study of molecular forces extends beyond theoretical knowledge; it has practical applications in various fields, including material science, pharmacology, and environmental science. For example, understanding these forces allows scientists to design better drugs by predicting how different molecules will interact within the body. In material science, the manipulation of molecular forces can lead to the development of new materials with tailored properties, such as increased strength or flexibility.In conclusion, the term molecular force encompasses a range of interactions that are vital to the behavior of matter at the molecular level. By studying these forces, we gain insights into the fundamental principles that govern chemical reactions, biological processes, and material properties. Whether in the laboratory or in nature, molecular forces are a key component of the intricate web of interactions that define our world. Understanding these forces not only enriches our knowledge of science but also enhances our ability to innovate and address real-world challenges.

理解分子力的概念对于掌握化学和生物学的原则至关重要。分子力是指分子之间的吸引或排斥相互作用，这在决定物质的性质方面起着关键作用。这些力可以分为几种类型，包括氢键、范德华力和离子键。每种类型的分子力都有其独特的特征和对物质在不同环境中表现的影响。例如，氢键是一种分子力，当一个氢原子与一个电负性原子（如氧或氮）共价结合时，会与另一个电负性原子产生吸引作用。这种相互作用在生物系统中非常重要，特别是在DNA和蛋白质的结构中。这些大分子的稳定性在很大程度上依赖于氢键的存在，这有助于维持其三维形状并促进生物功能。另一方面，范德华力比氢键弱，但在理解分子相互作用方面仍然至关重要。这些力源于电子在核周围运动时发生的瞬时偶极子，导致电荷分布的暂时不平衡。尽管单独的力量较弱，但它们的集合可以显著影响物质的物理性质，例如沸点和熔点。例如，惰性气体的低沸点可以归因于原子之间作用的弱分子力。离子键代表了另一种分子力，当一个原子将电子捐赠给另一个原子时形成，导致正负电荷离子之间的吸引。这种类型的键在盐（如氯化钠）中普遍存在。离子键的强度及其导致的分子力有助于离子化合物的高熔点和沸点，使其在室温下为固态。对分子力的研究超越了理论知识；它在材料科学、药理学和环境科学等多个领域具有实际应用。例如，理解这些力使科学家能够通过预测不同分子在体内的相互作用来设计更好的药物。在材料科学中，操控分子力可以导致新材料的开发，这些材料具有定制的特性，如增强的强度或柔韧性。总之，术语分子力包含了一系列对分子层面物质行为至关重要的相互作用。通过研究这些力，我们获得了关于支配化学反应、生物过程和材料性质的基本原则的见解。无论是在实验室还是在自然界，分子力都是定义我们世界的复杂相互作用网络的关键组成部分。理解这些力不仅丰富了我们对科学的理解，还增强了我们创新和解决现实世界挑战的能力。