exothermic

简明释义

英[ˌeksəʊˈθɜːmɪk]美[ˌeksoʊˈθɜːrmɪk]

adj. 发热的；放出热量的；[热] 放热的

英英释义

单词用法

同义词

反义词

例句

1.It is another exothermic contributor to the proton - proton cycle.

它对质子-质子循环则是另一个放能贡献者。

2.Whether the reaction is exothermic or endothermic.

反应是放热的还是吸热的。

3.You're like an exothermic reaction, you spread your hotness everywhere!

你像一个发热的反应，全身上下都热极了。

4.Exothermic efficiency, metallographical structure and transition region of coating layer were also investigated.

还研究了放热效应，金相组织与涂层过渡层。

5.The adsorption is a spontaneous, exothermic process of reduced entropy.

该吸附是一个自发的、放热的熵减少过程。

6.They know nothing about exothermic chemical reactions.

他们对放热的化学反应一无所知。

7.Without cooling water, the irradiated nuclear fuel could spontaneously combust in an exothermic reaction.

没有冷水，辐照性核燃料就会在放热反应发生的同时燃烧。

8.The reaction between sodium and water is an exothermic 放热的 process that releases a significant amount of heat.

钠和水之间的反应是一个放热的过程，释放出大量热量。

9.In an exothermic 放热的 reaction, the products have lower energy than the reactants.

在一个放热的反应中，产物的能量低于反应物的能量。

10.Combustion of fuels is an exothermic 放热的 reaction that provides energy for engines.

燃料的燃烧是一个放热的反应，为发动机提供能量。

11.The formation of ice from water is an exothermic 放热的 process that releases heat into the environment.

水结冰的过程是一个放热的过程，会将热量释放到环境中。

12.During respiration, glucose undergoes an exothermic 放热的 reaction to release energy.

在呼吸过程中，葡萄糖经历一个放热的反应以释放能量。

作文

In the realm of chemistry, understanding various types of reactions is crucial for students and professionals alike. One such reaction that often comes up in discussions is the exothermic reaction. An exothermic reaction is defined as a process that releases energy, usually in the form of heat, to its surroundings. This concept is fundamental in both theoretical and practical applications, ranging from industrial processes to everyday phenomena. To illustrate the significance of exothermic reactions, consider the combustion of fuels. When we burn wood in a fireplace or gasoline in a car engine, we witness an exothermic reaction. The chemical bonds in the fuel are broken, and new bonds are formed with oxygen, resulting in the release of energy. This energy not only warms our homes but also powers our vehicles, showcasing how exothermic reactions play a vital role in our daily lives. Moreover, exothermic reactions are not limited to combustion. They can also be observed in biological processes. For instance, when our bodies metabolize food, exothermic reactions occur, releasing energy that we use to perform various activities. This energy release is essential for maintaining our body temperature and supporting cellular functions, highlighting the importance of exothermic reactions in biology. In addition to their practical implications, exothermic reactions have significant theoretical importance in the study of thermodynamics. The concept of enthalpy change, which measures the total heat content of a system, allows scientists to predict whether a reaction will be exothermic or endothermic. Understanding these principles helps chemists design experiments and industrial processes more efficiently, ensuring optimal energy use and minimal waste. Furthermore, exothermic reactions can be harnessed for practical applications. For example, in the field of medicine, certain exothermic reactions are utilized in heat packs that provide warmth to sore muscles or injuries. These heat packs contain chemicals that, when mixed, undergo an exothermic reaction, generating heat that soothes pain. This practical application demonstrates how the understanding of exothermic reactions can lead to innovative solutions in everyday life. However, it is also important to note that exothermic reactions can pose risks if not properly controlled. For instance, in industrial settings, uncontrolled exothermic reactions can lead to explosions or fires. Therefore, safety protocols must be established to monitor and manage these reactions effectively. This aspect emphasizes the need for thorough knowledge and understanding of exothermic processes in both educational and professional contexts. In conclusion, the concept of exothermic reactions is integral to the field of chemistry and beyond. From fueling our cars and heating our homes to powering biological processes and enabling medical innovations, exothermic reactions are everywhere. By grasping the principles behind these reactions, individuals can appreciate their significance and apply this knowledge in various fields. Ultimately, the study of exothermic reactions exemplifies the interconnectedness of science and everyday life, revealing how fundamental concepts can lead to profound impacts on our world.

在化学领域，理解各种反应类型对学生和专业人士来说至关重要。其中一个常常在讨论中出现的反应是放热反应。放热反应被定义为一种过程，它向周围环境释放能量，通常以热的形式。这一概念在理论和实际应用中都具有基础性意义，从工业过程到日常现象。 为了说明放热反应的重要性，可以考虑燃料的燃烧。当我们在壁炉中燃烧木材或在汽车发动机中燃烧汽油时，我们目睹了放热反应。燃料中的化学键被打破，与氧气形成新的化学键，从而释放出能量。这种能量不仅使我们的家变暖，而且为我们的车辆提供动力，展示了放热反应在我们日常生活中的重要作用。 此外，放热反应并不限于燃烧。它们也可以在生物过程中观察到。例如，当我们的身体代谢食物时，放热反应发生，释放出我们用于执行各种活动的能量。这种能量释放对于维持我们的体温和支持细胞功能至关重要，突显了放热反应在生物学中的重要性。 除了其实际应用外，放热反应在热力学研究中具有重要的理论意义。焓变的概念测量了系统的总热内容，使科学家能够预测反应是放热反应还是吸热反应。理解这些原理有助于化学家更有效地设计实验和工业过程，确保最佳能源利用和最小废物。 此外，放热反应可以被利用于实际应用。例如，在医学领域，某些放热反应被用于热包中，为酸痛的肌肉或伤害提供温暖。这些热包含有在混合时会发生放热反应的化学物质，产生热量以缓解疼痛。这一实际应用展示了对放热反应理解如何导致日常生活中的创新解决方案。 然而，值得注意的是，如果不加以控制，放热反应也可能带来风险。例如，在工业环境中，失控的放热反应可能导致爆炸或火灾。因此，必须建立安全协议，以有效监控和管理这些反应。这一点强调了在教育和专业环境中深入了解放热反应过程的必要性。 总之，放热反应的概念在化学及其他领域中是不可或缺的。从为我们的汽车提供动力和加热我们的家，到推动生物过程和促进医疗创新，放热反应无处不在。通过掌握这些反应背后的原理，个人可以欣赏其重要性，并在各个领域应用这些知识。最终，放热反应的研究例证了科学与日常生活的相互联系，揭示了基本概念如何对我们的世界产生深远影响。