endothermic reaction

简明释义

吸热反应

英英释义

例句

1.In a cold pack, an endothermic reaction 吸热反应 occurs when ammonium nitrate dissolves in water, absorbing heat and providing instant cooling.

在冷敷包中，当硝酸铵溶解在水中时，会发生endothermic reaction 吸热反应，吸收热量并提供即时降温。

2.Photosynthesis in plants is a classic example of an endothermic reaction 吸热反应 where sunlight is absorbed to convert carbon dioxide and water into glucose.

植物的光合作用是一个经典的endothermic reaction 吸热反应的例子，其中阳光被吸收以将二氧化碳和水转化为葡萄糖。

3.When ice melts, it undergoes an endothermic reaction 吸热反应 that absorbs heat from the surroundings.

当冰融化时，它经历了一个endothermic reaction 吸热反应，从周围环境中吸收热量。

4.The process of cooking can involve endothermic reactions 吸热反应, such as when baking bread, which requires heat to activate the yeast.

烹饪过程中可能涉及到endothermic reactions 吸热反应，例如在烘焙面包时，需要热量来激活酵母。

5.Certain chemical reactions, like the dissolution of some salts in water, are endothermic reactions 吸热反应 that require heat to proceed.

某些化学反应，如一些盐在水中的溶解，是需要热量才能进行的endothermic reactions 吸热反应。

作文

In the realm of chemistry, various types of reactions occur that are fundamental to our understanding of how substances interact with one another. One such reaction is known as an endothermic reaction, which is characterized by its ability to absorb heat from its surroundings. This process leads to a decrease in temperature in the environment where the reaction takes place. To better understand this concept, let’s explore what makes an endothermic reaction unique, its examples, and its significance in both nature and industry.An endothermic reaction can be described as a chemical process that requires energy input, typically in the form of heat. When reactants undergo an endothermic reaction, they absorb energy to break their bonds and form new products. This absorption of heat results in a cooling effect, which can be observed in various everyday scenarios. For instance, when ammonium nitrate is dissolved in water, it absorbs heat, causing the solution to feel cold to the touch. This is a classic example of an endothermic reaction that is often demonstrated in chemistry classrooms.The importance of endothermic reactions extends beyond simple classroom experiments. In nature, these reactions play a crucial role in processes such as photosynthesis. During photosynthesis, plants absorb sunlight, which provides the energy needed for converting carbon dioxide and water into glucose and oxygen. This process is essentially an endothermic reaction because it requires the input of energy from the sun to drive the chemical changes that lead to the formation of organic compounds.In addition to their natural occurrences, endothermic reactions have significant applications in various industries. For example, in the field of refrigeration, endothermic processes are utilized to create cooling effects. Refrigerants undergo endothermic reactions as they evaporate, absorbing heat from the surrounding environment and thereby lowering the temperature inside a refrigerator or air conditioning unit. This principle is vital for food preservation and maintaining comfortable living conditions in hot climates.Moreover, endothermic reactions are also employed in certain medical applications. For instance, instant cold packs that are commonly used for sports injuries contain chemicals that undergo an endothermic reaction when mixed. The rapid absorption of heat from the injured area helps reduce swelling and provides pain relief, showcasing the practical benefits of these reactions in real-world situations.Understanding endothermic reactions not only enhances our knowledge of chemical processes but also highlights the interconnectedness of various scientific disciplines. By studying how energy is absorbed during these reactions, we gain insights into thermodynamics, environmental science, and even biology. Overall, endothermic reactions are a fascinating aspect of chemistry that illustrate the dynamic nature of matter and energy interactions.In conclusion, the concept of an endothermic reaction is pivotal in both theoretical and practical contexts. From their role in natural processes like photosynthesis to their applications in refrigeration and medicine, these reactions demonstrate the essential principles of energy transfer and transformation. As we continue to explore the intricacies of chemical reactions, the significance of endothermic reactions will undoubtedly remain a topic of interest and importance in the scientific community.

在化学领域，各种类型的反应是我们理解物质相互作用的基础。其中一种反应被称为吸热反应，其特点是能够从周围环境中吸收热量。这一过程导致反应发生时环境温度的降低。为了更好地理解这一概念，让我们探讨一下是什么让吸热反应独特，它的例子，以及它在自然界和工业中的重要性。吸热反应可以被描述为一种化学过程，需要能量输入，通常以热量的形式。当反应物经历吸热反应时，它们吸收能量以打破其键并形成新产品。这种热量的吸收导致冷却效果，可以在各种日常场景中观察到。例如，当硝酸铵溶解在水中时，它会吸收热量，导致溶液摸起来很冷。这是一个经典的吸热反应的例子，通常在化学课堂上演示。吸热反应的重要性不仅限于简单的课堂实验。在自然界中，这些反应在光合作用等过程中发挥着至关重要的作用。在光合作用中，植物吸收阳光，为将二氧化碳和水转化为葡萄糖和氧气提供所需的能量。这个过程本质上是一种吸热反应，因为它需要来自太阳的能量输入来驱动化学变化，从而形成有机化合物。除了自然界的发生外，吸热反应在各个行业也有重要应用。例如，在制冷领域，利用吸热过程来创造冷却效果。制冷剂在蒸发时经历吸热反应，从周围环境中吸收热量，从而降低冰箱或空调装置内部的温度。这个原理对食品保存和在炎热气候中维持舒适的生活条件至关重要。此外，吸热反应还在某些医疗应用中得到应用。例如，常用于运动损伤的即用冷敷包含有在混合时经历吸热反应的化学物质。迅速从受伤区域吸收热量有助于减少肿胀并提供疼痛缓解，展示了这些反应在现实世界中的实际好处。理解吸热反应不仅增强了我们对化学过程的知识，还突显了各种科学学科之间的相互关联。通过研究这些反应中能量是如何被吸收的，我们获得了热力学、环境科学甚至生物学的见解。总的来说，吸热反应是化学的一个迷人方面，说明了物质和能量相互作用的动态本质。总之，吸热反应的概念在理论和实际背景中都是至关重要的。从它们在光合作用等自然过程中的作用到它们在制冷和医学中的应用，这些反应展示了能量转移和转化的基本原理。随着我们继续探索化学反应的复杂性，吸热反应的重要性无疑将继续成为科学界关注和重视的话题。