molecular volume

简明释义

分子体积

英英释义

例句

1.In thermodynamics, the molecular volume can influence the entropy of a system.

在热力学中，分子体积可以影响系统的熵。

2.The calculation of molecular volume is crucial in predicting how substances will behave in different states.

计算分子体积对于预测物质在不同状态下的行为至关重要。

3.Understanding the molecular volume helps in designing more efficient drug delivery systems.

理解分子体积有助于设计更高效的药物递送系统。

4.The molecular volume of water is significantly different from that of oil, leading to their immiscibility.

水的分子体积与油的显著不同，导致它们不相混溶。

5.Chemists often use the molecular volume to determine the packing efficiency of molecules in a crystal.

化学家们常常使用分子体积来确定晶体中分子的堆积效率。

作文

Understanding the concept of molecular volume is crucial in the field of chemistry and material science. Molecular volume refers to the amount of space occupied by one mole of a substance at a given temperature and pressure. It is an essential parameter that helps scientists understand the properties of different substances, including their density, reactivity, and phase behavior.To grasp the significance of molecular volume, we can start by considering the ideal gas law, which relates pressure, volume, temperature, and the number of moles of a gas. According to this law, the volume occupied by a gas is directly proportional to the number of moles and temperature, while inversely proportional to pressure. This relationship illustrates how molecular volume can change under different conditions, affecting the behavior of gases.In addition to gases, molecular volume also plays a vital role in understanding liquids and solids. For instance, when examining the solubility of a substance in a solvent, one must consider the molecular volume of both the solute and the solvent. A larger molecular volume may indicate that a substance is less soluble because it occupies more space, making it difficult for solvent molecules to surround and interact with solute particles.Furthermore, the molecular volume can influence the physical properties of materials. For example, materials with smaller molecular volumes tend to have higher densities, which can affect their strength and durability. This is particularly important in the development of new materials, such as polymers and composites, where engineers and scientists must balance molecular volume with other properties to achieve desired performance characteristics.Moreover, the concept of molecular volume extends beyond basic chemistry into various applications, including pharmaceuticals and nanotechnology. In drug design, for instance, the molecular volume of potential drug candidates can help predict their absorption, distribution, metabolism, and excretion (ADME) properties. A compound with an appropriate molecular volume is more likely to be bioavailable, meaning it can effectively reach its target in the body.In conclusion, the term molecular volume encompasses a fundamental aspect of chemistry that influences a wide range of scientific disciplines. By comprehensively understanding molecular volume, researchers can make informed decisions about material selection, chemical reactions, and the development of new technologies. As we continue to explore the complexities of matter at the molecular level, the importance of molecular volume will undoubtedly remain a key focus in advancing our knowledge and applications in science.

理解分子体积的概念在化学和材料科学领域至关重要。分子体积是指在特定温度和压力下，一摩尔物质所占据的空间量。这是一个重要的参数，帮助科学家了解不同物质的性质，包括它们的密度、反应性和相行为。为了理解分子体积的重要性，我们可以从理想气体定律开始，这一定律将气体的压力、体积、温度和摩尔数联系在一起。根据这一定律，气体所占据的体积与摩尔数和温度成正比，而与压力成反比。这种关系说明了在不同条件下，分子体积如何变化，从而影响气体的行为。除了气体，分子体积在理解液体和固体方面也发挥着重要作用。例如，在考察某物质在溶剂中的溶解度时，必须考虑溶质和溶剂的分子体积。较大的分子体积可能表明一种物质的溶解度较低，因为它占据了更多空间，使得溶剂分子难以包围和与溶质颗粒相互作用。此外，分子体积可以影响材料的物理性质。例如，具有较小分子体积的材料往往密度较高，这可能影响它们的强度和耐用性。这在新材料的开发中尤为重要，例如聚合物和复合材料，工程师和科学家必须平衡分子体积与其他属性，以实现所需的性能特征。此外，分子体积的概念不仅限于基础化学，还扩展到各种应用，包括制药和纳米技术。在药物设计中，例如，潜在药物候选者的分子体积可以帮助预测其吸收、分布、代谢和排泄（ADME）特性。具有适当分子体积的化合物更可能具有生物利用度，这意味着它能够有效地到达体内的目标。总之，术语分子体积涵盖了化学的一个基本方面，影响着广泛的科学学科。通过全面理解分子体积，研究人员可以在材料选择、化学反应和新技术开发方面做出明智的决策。随着我们继续探索分子层面物质的复杂性，分子体积的重要性无疑将继续成为推动我们知识和科学应用进步的关键焦点。