chemical reaction

简明释义

化学反应

英英释义

例句

1.When vinegar is mixed with baking soda, a chemical reaction 化学反应 produces carbon dioxide gas.

当醋与小苏打混合时，会产生二氧化碳气体的化学反应。

2.The process of rusting is a type of chemical reaction 化学反应 that occurs when iron reacts with oxygen and moisture.

生锈的过程是一种化学反应，当铁与氧气和水分反应时发生。

3.Acid-base neutralization is a common chemical reaction 化学反应 used in many laboratory experiments.

酸碱中和是许多实验室实验中常见的化学反应。

4.Photosynthesis is a vital chemical reaction 化学反应 that plants use to convert sunlight into energy.

光合作用是植物用来将阳光转化为能量的重要化学反应。

5.In baking, the rising of bread involves a chemical reaction 化学反应 between yeast and sugar.

在烘焙中，面包的发酵涉及酵母和糖之间的化学反应。

作文

A chemical reaction is a fundamental process in which substances, known as reactants, undergo a transformation to form new substances, called products. This process is essential in various fields such as chemistry, biology, and environmental science. Understanding chemical reactions is crucial for students and researchers alike, as it lays the foundation for many scientific principles. In this essay, I will explore the significance of chemical reactions, their types, and their applications in everyday life.Firstly, chemical reactions can be classified into several categories based on their characteristics. The most common types include synthesis reactions, decomposition reactions, single replacement reactions, and double replacement reactions. In a synthesis reaction, two or more reactants combine to form a single product. For example, when hydrogen gas reacts with oxygen gas, water is produced. Conversely, in a decomposition reaction, a single compound breaks down into two or more simpler substances. An example of this is the breakdown of hydrogen peroxide into water and oxygen gas.Single replacement reactions occur when one element replaces another in a compound. For instance, when zinc is placed in a solution of copper sulfate, zinc displaces copper, resulting in zinc sulfate and copper metal. Double replacement reactions involve the exchange of ions between two compounds, leading to the formation of two new compounds. A classic example is the reaction between sodium chloride and silver nitrate, which produces silver chloride and sodium nitrate.The study of chemical reactions is not only important in theoretical contexts but also has practical implications in our daily lives. For instance, the process of digestion involves numerous chemical reactions that break down food into nutrients that our bodies can absorb. Similarly, the combustion of fuels in our vehicles is a series of chemical reactions that release energy, allowing us to travel from one place to another.Moreover, chemical reactions play a significant role in environmental processes. For example, photosynthesis is a vital chemical reaction that occurs in plants, where carbon dioxide and water are converted into glucose and oxygen using sunlight. This process is essential for life on Earth, as it provides the oxygen we breathe and serves as the foundation for the food chain.In industry, chemical reactions are harnessed to produce a wide range of products, from pharmaceuticals to plastics. The development of new materials often relies on the ability to manipulate chemical reactions to create desired properties. For instance, the production of synthetic polymers involves a series of chemical reactions that link monomers together to form long chains.In conclusion, chemical reactions are a vital aspect of both nature and human innovation. They govern the interactions between substances and lead to the creation of new materials and energy. By understanding the different types of chemical reactions and their applications, we can better appreciate the complexity of the world around us. Whether it is through the food we eat, the products we use, or the natural processes that sustain life, chemical reactions are undeniably integral to our existence.

化学反应是一个基本过程，其中被称为反应物的物质发生转化，形成新的物质，称为产物。这个过程在化学、生物学和环境科学等多个领域中至关重要。理解化学反应对学生和研究人员来说都是至关重要的，因为它为许多科学原理奠定了基础。在这篇文章中，我将探讨化学反应的重要性、类型及其在日常生活中的应用。首先，化学反应可以根据其特征分为几类。最常见的类型包括合成反应、分解反应、单取代反应和双取代反应。在合成反应中，两种或更多的反应物结合形成单一产物。例如，当氢气与氧气反应时，会产生水。相反，在分解反应中，单一化合物分解为两种或更多的简单物质。这方面的一个例子是过氧化氢分解成水和氧气。单取代反应发生在一种元素替换化合物中的另一种元素时。例如，当锌放入硫酸铜溶液中时，锌取代铜，产生硫酸锌和金属铜。双取代反应涉及两个化合物之间的离子交换，导致形成两个新化合物。经典的例子是氯化钠与硝酸银之间的反应，生成氯化银和硝酸钠。化学反应的研究不仅在理论背景中重要，而且在我们的日常生活中也具有实际意义。例如，消化过程涉及众多化学反应，将食物分解为我们身体可以吸收的营养。同样，我们车辆中燃料的燃烧是一系列释放能量的化学反应，使我们能够从一个地方旅行到另一个地方。此外，化学反应在环境过程中发挥着重要作用。例如，光合作用是植物中发生的一种重要化学反应，其中二氧化碳和水在阳光的作用下转化为葡萄糖和氧气。这个过程对地球上的生命至关重要，因为它提供了我们呼吸的氧气，并作为食物链的基础。在工业中，化学反应被利用来生产各种产品，从药物到塑料。新材料的开发往往依赖于操纵化学反应以创造所需的特性。例如，合成聚合物的生产涉及一系列化学反应，将单体连接在一起形成长链。总之，化学反应是自然和人类创新的一个重要方面。它们支配着物质之间的相互作用，并导致新材料和能量的创造。通过理解不同类型的化学反应及其应用，我们可以更好地欣赏周围世界的复杂性。无论是通过我们吃的食物、使用的产品，还是维持生命的自然过程，化学反应无疑是我们存在中不可或缺的一部分。