activation energy

简明释义

活化能

英英释义

例句

1.The activation energy is a critical factor in determining the rate of a reaction.

在决定反应速率时，活化能是一个关键因素。

2.The chemical reaction requires a certain amount of activation energy to proceed.

这个化学反应需要一定的活化能才能进行。

3.Increasing the temperature can lower the activation energy needed for the reaction.

提高温度可以降低反应所需的活化能。

4.In some cases, a catalyst can provide an alternative pathway with a lower activation energy.

在某些情况下，催化剂可以提供一条具有更低活化能的替代途径。

5.Enzymes function by lowering the activation energy required for biochemical reactions.

酶的作用是降低生化反应所需的活化能。

作文

In the realm of chemistry, the concept of activation energy plays a crucial role in understanding how reactions occur. Activation energy refers to the minimum amount of energy required for a chemical reaction to take place. It is the energy barrier that must be overcome for reactants to transform into products. Without sufficient activation energy, even the most reactive substances would remain inert, as they would lack the necessary energy to initiate the reaction process.To illustrate this concept, consider a simple example of a campfire. When you strike a match, the friction generates heat, which provides the initial activation energy needed to ignite the wood. Once the fire starts, it releases heat, and this exothermic reaction continues without needing additional energy input. However, if the initial flame is not strong enough to overcome the activation energy, the wood will not catch fire, regardless of how dry or flammable it may be.The significance of activation energy extends beyond just chemical reactions; it also has implications in biological systems. Enzymes, which are biological catalysts, lower the activation energy of reactions in living organisms, allowing metabolic processes to occur at a rate necessary for life. For instance, in human digestion, enzymes break down food molecules by providing an alternative pathway with a lower activation energy, enabling the body to extract energy efficiently from the food we consume.Moreover, the concept of activation energy is not limited to chemistry alone; it can also be applied in various fields, such as physics and engineering. In the context of material science, for example, the activation energy can determine the rate at which materials degrade or corrode over time. Understanding this energy barrier helps engineers design more durable materials that can withstand environmental stressors.In addition, the idea of activation energy can be metaphorically applied to personal development and motivation. Just as chemical reactions require an initial push to overcome the energy barrier, individuals often need a certain level of motivation to initiate change in their lives. This could be in the form of setting goals, seeking inspiration, or finding support from others. Once the initial activation energy is achieved, momentum builds, making it easier to continue progressing towards one’s objectives.In conclusion, activation energy is a fundamental concept that underpins many processes in both the natural world and our everyday lives. Whether it is in the context of chemical reactions, biological functions, material degradation, or personal growth, understanding and harnessing activation energy can lead to significant advancements and improvements. By recognizing the importance of this energy barrier, we can better appreciate the intricate mechanisms that drive change and transformation around us.

在化学领域，活化能的概念在理解反应如何发生方面起着至关重要的作用。活化能是指化学反应发生所需的最小能量。它是反应物转变为产物所必须克服的能量障碍。如果没有足够的活化能，即使是最具反应性的物质也会保持惰性，因为它们缺乏启动反应过程所需的能量。为了说明这一概念，我们可以考虑一个简单的例子：篝火。当你划燃一根火柴时，摩擦产生的热量提供了点燃木材所需的初始活化能。一旦火焰点燃，它会释放热量，这个放热反应会继续进行，而不需要额外的能量输入。然而，如果初始火焰不足以克服活化能，木材就不会着火，无论它多么干燥或易燃。活化能的重要性不仅限于化学反应；它在生物系统中也有影响。酶是生物催化剂，它们降低了生物体内反应的活化能，使代谢过程得以以生命所需的速率进行。例如，在人类消化过程中，酶通过提供一种具有较低活化能的替代路径来分解食物分子，使身体能够有效地从我们摄入的食物中提取能量。此外，活化能的概念不仅限于化学；它还可以应用于多个领域，例如物理和工程。在材料科学的背景下，活化能可以决定材料随时间降解或腐蚀的速度。理解这个能量障碍帮助工程师设计出更耐用的材料，以抵御环境压力。此外，活化能的概念可以比喻性地应用于个人发展和动机。正如化学反应需要初始推动力来克服能量障碍，个人通常也需要一定水平的动机来启动生活中的变化。这可能表现为设定目标、寻求灵感或寻找他人的支持。一旦初始的活化能得到实现，动力就会积累，使人们更容易朝着自己的目标不断前进。总之，活化能是一个基础概念，支撑着自然界和我们日常生活中的许多过程。无论是在化学反应、生物功能、材料降解还是个人成长的背景下，理解和利用活化能都可以带来显著的进步和改善。通过认识到这个能量障碍的重要性，我们可以更好地欣赏驱动我们周围变化和转型的复杂机制。