endothermic reaction

简明释义

吸热反应

英英释义

例句

1.When ice melts, it undergoes an endothermic reaction 吸热反应 as it absorbs heat from the environment.

当冰融化时，它经历了一个endothermic reaction 吸热反应，因为它从环境中吸收热量。

2.In a cold pack, the chemical reaction that occurs is an endothermic reaction 吸热反应 which helps to reduce swelling.

在冷敷包中，发生的化学反应是一个endothermic reaction 吸热反应，它有助于减少肿胀。

3.The cooking of certain foods involves endothermic reactions 吸热反应, where heat is absorbed to facilitate the cooking process.

某些食物的烹饪涉及到endothermic reactions 吸热反应，在这个过程中吸收热量以促进烹饪。

4.In chemistry class, we learned that the dissolution of ammonium nitrate in water is an endothermic reaction 吸热反应 that absorbs heat from its surroundings.

在化学课上，我们了解到氯化铵在水中的溶解是一个endothermic reaction 吸热反应，它从周围吸收热量。

5.Photosynthesis is an example of an endothermic reaction 吸热反应 where plants absorb sunlight to convert carbon dioxide and water into glucose.

光合作用是一个例子，endothermic reaction 吸热反应，在这个过程中植物吸收阳光，将二氧化碳和水转化为葡萄糖。

作文

In the realm of chemistry, reactions can be broadly categorized into two types: exothermic and endothermic reactions. An endothermic reaction is a process that absorbs heat from its surroundings, leading to a decrease in the temperature of the environment. This phenomenon occurs when the energy required to break the bonds of the reactants is greater than the energy released when new bonds are formed in the products. As a result, the system takes in energy in the form of heat to facilitate the reaction. Understanding endothermic reactions is crucial for various applications in both industrial processes and everyday life.One common example of an endothermic reaction is the dissolution of ammonium nitrate in water. When ammonium nitrate is added to water, it dissolves and absorbs heat from the surrounding water, making the solution feel cold to the touch. This reaction is often utilized in instant cold packs, which are commonly used for treating injuries. By breaking the seal of the pack, the ammonium nitrate mixes with water, resulting in an endothermic reaction that provides immediate cooling relief.Another significant example of an endothermic reaction is photosynthesis, the process by which green plants convert light energy into chemical energy. During photosynthesis, plants absorb sunlight and use it to convert carbon dioxide and water into glucose and oxygen. This process requires energy input from sunlight, thus classifying it as an endothermic reaction. The significance of photosynthesis cannot be overstated, as it is the foundation of the food chain and plays a vital role in maintaining atmospheric oxygen levels.The understanding of endothermic reactions extends beyond just scientific curiosity; it has practical implications in various fields. For instance, in the field of thermodynamics, engineers must consider these reactions when designing systems that involve heat transfer. In the food industry, knowledge of endothermic reactions is applied in the development of products that require precise temperature control during processing and storage.Moreover, the concept of endothermic reactions also finds relevance in environmental science. For example, certain natural processes, such as the melting of ice or the evaporation of water, are endothermic reactions that play a significant role in regulating Earth's climate. Understanding how these reactions work helps scientists predict weather patterns and assess the impacts of climate change.In conclusion, an endothermic reaction is a fundamental concept in chemistry characterized by the absorption of heat from the surroundings. Its implications stretch across various disciplines, including medicine, environmental science, and engineering. By studying these reactions, we gain valuable insights into both natural processes and human-made systems, enhancing our ability to innovate and adapt in a rapidly changing world. Embracing the knowledge of endothermic reactions is not only essential for scientific advancement but also for fostering a deeper appreciation of the intricate connections that exist within our universe.

在化学领域，反应大致可以分为两种类型：放热反应和吸热反应。吸热反应是一个从周围环境中吸收热量的过程，导致环境温度下降。当打破反应物的键所需的能量大于形成产物时释放的新键的能量时，就会发生这种现象。因此，系统以热量的形式吸收能量以促进反应。理解吸热反应对于工业过程和日常生活中的各种应用至关重要。一个常见的吸热反应例子是硝酸铵在水中的溶解。当将硝酸铵加入水中时，它溶解并从周围水中吸收热量，使溶液感觉冰冷。这种反应通常用于即时冷敷包，这些包通常用于治疗伤害。通过打破包装的密封，硝酸铵与水混合，导致吸热反应，提供立即的冷却缓解。另一个重要的吸热反应例子是光合作用，绿色植物将光能转化为化学能的过程。在光合作用过程中，植物吸收阳光，并利用它将二氧化碳和水转化为葡萄糖和氧气。这个过程需要来自阳光的能量输入，因此被归类为吸热反应。光合作用的重要性无法夸大，因为它是食物链的基础，并在维持大气氧气水平方面发挥着重要作用。对吸热反应的理解不仅仅是科学好奇心；它在各个领域都有实际意义。例如，在热力学领域，工程师在设计涉及热传递的系统时必须考虑这些反应。在食品工业中，了解吸热反应在开发需要在加工和存储过程中精确温度控制的产品时得到了应用。此外，吸热反应的概念在环境科学中也具有相关性。例如，某些自然过程，如冰的融化或水的蒸发，是吸热反应，在调节地球气候方面发挥着重要作用。理解这些反应如何工作有助于科学家预测天气模式并评估气候变化的影响。总之，吸热反应是化学中的一个基本概念，其特点是从周围环境中吸收热量。它的影响跨越多个学科，包括医学、环境科学和工程。通过研究这些反应，我们获得了对自然过程和人为系统的宝贵见解，从而增强了我们在快速变化的世界中创新和适应的能力。拥抱对吸热反应的知识不仅对科学进步至关重要，而且有助于加深对我们宇宙内复杂联系的欣赏。