molecular motion

简明释义

分子运动

英英释义

例句

1.In gases, molecular motion is rapid and chaotic, leading to high pressure and temperature.

在气体中，分子运动快速且混乱，导致高压和高温。

2.The temperature of a substance affects its molecular motion, which in turn influences its state of matter.

物质的温度会影响其分子运动，进而影响其物态。

3.When ice melts, the molecular motion increases significantly, allowing the solid to become liquid.

当冰融化时，分子运动显著增加，使固体变为液体。

4.During diffusion, molecular motion causes particles to spread from areas of high concentration to low concentration.

在扩散过程中，分子运动导致粒子从高浓度区域向低浓度区域扩散。

5.Understanding molecular motion is crucial for predicting how substances will react chemically.

理解分子运动对于预测物质如何发生化学反应至关重要。

作文

Molecular motion is a fundamental concept in the study of physics and chemistry. It refers to the movement of molecules within a substance and is crucial for understanding how different materials behave under various conditions. At the microscopic level, all matter is made up of molecules that are constantly in motion. This motion can be influenced by factors such as temperature, pressure, and the state of matter (solid, liquid, or gas). For instance, when the temperature of a substance increases, the kinetic energy of its molecules also increases, leading to more vigorous 分子运动. This phenomenon is particularly evident when observing the behavior of gases, where molecules move freely and rapidly, colliding with one another and the walls of their container.In solids, however, the situation is quite different. Molecules in a solid are closely packed together and can only vibrate in place, resulting in limited 分子运动. This restricted movement explains why solids maintain a definite shape and volume. As the temperature rises, these vibrations become more intense, eventually causing the solid to melt into a liquid. In liquids, molecules are still close together, but they have enough energy to slide past one another, allowing for greater 分子运动 compared to solids.Understanding 分子运动 is essential for various scientific applications. For example, in the field of chemistry, it helps explain reaction rates. The collision theory posits that for a chemical reaction to occur, reactant molecules must collide with sufficient energy and proper orientation. Therefore, increasing the temperature can enhance the 分子运动 of the molecules involved, leading to a higher frequency of effective collisions and, consequently, a faster reaction rate.Moreover, in biology, 分子运动 plays a vital role in processes such as diffusion and osmosis. These processes are essential for the transport of nutrients and waste products across cell membranes. For instance, when a drop of dye is placed in water, the dye molecules begin to spread out due to their random 分子运动, eventually resulting in a uniform color throughout the water. This illustrates how molecular motion facilitates the mixing of substances at the molecular level.In conclusion, 分子运动 is a key concept that underpins many scientific principles across various disciplines. Its understanding not only aids in explaining physical and chemical properties but also has practical implications in fields like medicine, environmental science, and materials engineering. By studying 分子运动, scientists can develop new materials, improve chemical reactions, and even understand biological processes better. As we continue to explore the intricacies of molecular behavior, the significance of 分子运动 will undoubtedly remain a cornerstone of scientific inquiry and discovery.

分子运动是物理学和化学研究中的一个基本概念。它指的是物质中分子的运动，对于理解不同材料在各种条件下的行为至关重要。在微观层面上，所有物质都是由不断运动的分子组成的。这种运动可以受到温度、压力和物质状态（固体、液体或气体）等因素的影响。例如，当物质的温度升高时，其分子的动能也会增加，导致更剧烈的分子运动。这一现象在观察气体行为时尤为明显，气体中的分子自由且迅速地移动，相互碰撞以及与其容器的壁面碰撞。然而，在固体中，情况却截然不同。固体中的分子紧密地排列在一起，只能在原地振动，从而导致有限的分子运动。这种受限的运动解释了固体为何保持固定的形状和体积。当温度升高时，这些振动变得更加剧烈，最终导致固体融化成液体。在液体中，分子仍然紧密相邻，但它们有足够的能量滑过彼此，从而允许比固体更大的分子运动。理解分子运动对于各种科学应用至关重要。例如，在化学领域，它有助于解释反应速率。碰撞理论认为，为了发生化学反应，反应物分子必须以足够的能量和正确的方向碰撞。因此，提高温度可以增强参与分子的分子运动，从而导致有效碰撞的频率增加，因此反应速率加快。此外，在生物学中，分子运动在扩散和渗透等过程中发挥着重要作用。这些过程对营养物质和废物通过细胞膜的运输至关重要。例如，当一滴染料放入水中时，染料分子由于其随机的分子运动开始扩散，最终导致水中颜色均匀。这说明了分子运动如何促进物质在分子层面的混合。总之，分子运动是支撑许多科学原理的关键概念，横跨多个学科。它的理解不仅有助于解释物理和化学性质，还有在医学、环境科学和材料工程等领域的实际应用。通过研究分子运动，科学家可以开发新材料、改善化学反应，甚至更好地理解生物过程。随着我们继续探索分子行为的复杂性，分子运动的重要性无疑将继续成为科学探究和发现的基石。