exothermicity

简明释义

英[ˌɛksoʊˈθɜrmɪsɪti]美[ˌɛksoʊˈθɜrmɪsɪti]

n. 放热性

英英释义

单词用法

同义词

反义词

例句

1.The calculated results shows that because of the low energy barrier and high exothermicity, the reaction of CH3SS with xo could occur easily in the atmosphere.

计算结果表明单线态反应为主要反应通道，且由于该通道的反应能垒低、放热明显，说明CH3SS与XO在大气中比较容易进行。

2.The calculated results shows that because of the low energy barrier and high exothermicity, the reaction of CH3SS with xo could occur easily in the atmosphere.

计算结果表明单线态反应为主要反应通道，且由于该通道的反应能垒低、放热明显，说明CH3SS与XO在大气中比较容易进行。

3.The process of combustion is a classic example of exothermicity, where energy is released in the form of heat and light.

燃烧过程是一个典型的放热性例子，其中能量以热和光的形式释放。

4.In a chemical reaction, the exothermicity can be measured by the temperature increase in the surrounding environment.

在化学反应中，放热性可以通过周围环境温度的升高来测量。

5.The exothermicity of the reaction made it suitable for use in self-heating food packages.

反应的放热性使其适合用于自加热食品包装。

6.When mixing water with strong acids, the exothermicity of the reaction can cause the solution to become dangerously hot.

将水与强酸混合时，反应的放热性可能使溶液变得危险地热。

7.In thermodynamics, understanding exothermicity is crucial for predicting the behavior of chemical systems.

在热力学中，理解放热性对于预测化学系统的行为至关重要。

作文

In the realm of chemistry, understanding various reactions is crucial for grasping how substances interact with each other. One important concept that emerges in this context is exothermicity, which refers to the release of energy, usually in the form of heat, during a chemical reaction. This phenomenon can be observed in many everyday processes, such as combustion and respiration. In this essay, I will explore the significance of exothermicity in both natural and industrial contexts, highlighting its implications for energy production and environmental considerations. To begin with, it is essential to recognize that exothermicity plays a vital role in biological systems. For instance, when glucose is metabolized in our bodies, the process releases energy that is necessary for various physiological functions. This reaction is not only crucial for sustaining life but also exemplifies how exothermic reactions are fundamental to the survival of living organisms. The heat generated from these reactions helps maintain body temperature, which is essential for optimal enzyme activity and overall metabolic processes. Moreover, exothermicity is a key factor in energy production on a larger scale. In power plants, fossil fuels such as coal, oil, and natural gas undergo combustion—a highly exothermic reaction. This process converts chemical energy stored in these fuels into thermal energy, which is then used to generate electricity. The efficiency of energy conversion in exothermic reactions makes them a primary source of power worldwide. However, this reliance on fossil fuels raises significant environmental concerns, particularly regarding greenhouse gas emissions and climate change. In addition to traditional energy sources, exothermicity is also harnessed in various industrial applications. For example, in the manufacturing of cement, the hydration of cement compounds is an exothermic reaction that contributes to the hardening process. This reaction not only provides structural integrity to buildings but also generates heat, which can be beneficial in certain climates. Furthermore, the food industry utilizes exothermic reactions in processes like fermentation, where yeast converts sugars into alcohol and carbon dioxide, releasing energy in the process. Despite the advantages of exothermicity, it is crucial to consider its potential drawbacks. The heat released during exothermic reactions can lead to temperature control issues in industrial processes, potentially causing equipment damage or unsafe working conditions. Therefore, managing the heat generated in these reactions is essential for ensuring safety and efficiency. Additionally, the environmental impact of large-scale exothermic reactions, especially those involving fossil fuels, necessitates a shift towards more sustainable energy sources. In conclusion, exothermicity is a fundamental concept in chemistry that has far-reaching implications in both natural and industrial contexts. Its role in biological processes underscores its importance for life, while its application in energy production highlights its significance for modern society. However, as we continue to rely on exothermic reactions for energy, it is imperative to address the environmental challenges they pose. By exploring alternative energy sources and improving our understanding of exothermicity, we can pave the way for a more sustainable future. Ultimately, a balanced approach that harnesses the benefits of exothermicity while mitigating its drawbacks will be essential for addressing the pressing issues of our time.

在化学领域，理解各种反应对于掌握物质之间的相互作用至关重要。在这个背景下，一个重要的概念是放热性，它指的是在化学反应中释放能量，通常以热的形式出现。这种现象可以在许多日常过程中观察到，例如燃烧和呼吸。在这篇文章中，我将探讨放热性在自然和工业环境中的重要性，强调它对能源生产和环境考虑的影响。 首先，必须认识到放热性在生物系统中发挥着至关重要的作用。例如，当葡萄糖在我们体内代谢时，这一过程释放出维持各种生理功能所需的能量。这种反应不仅对维持生命至关重要，而且还例证了放热反应对生物体生存的重要性。由这些反应产生的热量有助于维持体温，这对酶的最佳活性和整体代谢过程至关重要。 此外，放热性是大规模能源生产中的关键因素。在发电厂中，煤、石油和天然气等化石燃料经历燃烧——一种高度放热的反应。这个过程将这些燃料中储存的化学能转化为热能，然后用于发电。放热反应中能源转化的效率使其成为全球主要的能源来源。然而，这种对化石燃料的依赖引发了重大环境问题，特别是温室气体排放和气候变化。 除了传统能源来源外，放热性还在各种工业应用中得到利用。例如，在水泥制造中，水泥化合物的水合是一个放热反应，它有助于硬化过程。这个反应不仅为建筑物提供结构完整性，还产生热量，这在某些气候条件下可能是有益的。此外，食品行业在发酵等过程中利用放热反应，其中酵母将糖分转化为酒精和二氧化碳，同时释放能量。 尽管放热性具有优势，但考虑其潜在缺点也至关重要。在工业过程中，放热反应中释放的热量可能导致温度控制问题，可能造成设备损坏或不安全的工作条件。因此，管理这些反应中产生的热量对于确保安全和效率至关重要。此外，大规模的放热反应，尤其是涉及化石燃料的反应，对环境的影响需要我们向更可持续的能源来源转变。 总之，放热性是化学中的一个基本概念，在自然和工业环境中具有深远的影响。它在生物过程中的作用凸显了其对生命的重要性，而它在能源生产中的应用则强调了其对现代社会的重要性。然而，随着我们继续依赖放热反应来获取能源，解决它们带来的环境挑战是至关重要的。通过探索替代能源来源和加深对放热性的理解，我们可以为更加可持续的未来铺平道路。最终，利用放热性的好处同时减轻其缺点的平衡方法，对于应对我们时代的紧迫问题将是必不可少的。