chemical reaction

简明释义

化学反应

英英释义

例句

1.The explosion was caused by a rapid chemical reaction 化学反应 between the two reactive substances.

爆炸是由于两种反应物之间的快速化学反应引起的。

2.When vinegar is mixed with baking soda, a noticeable chemical reaction 化学反应 occurs, producing bubbles and fizzing.

当醋与小苏打混合时，会发生明显的化学反应，产生气泡和嘶嘶声。

3.In photosynthesis, plants undergo a chemical reaction 化学反应 to convert sunlight into energy.

在光合作用中，植物经历一个化学反应将阳光转化为能量。

4.Cooking involves many chemical reactions 化学反应, such as the Maillard reaction that browns meat.

烹饪涉及许多化学反应，例如使肉变褐色的美拉德反应。

5.Rust formation on iron is a slow chemical reaction 化学反应 that occurs when iron reacts with oxygen and moisture.

铁锈的形成是一个缓慢的化学反应，当铁与氧气和水分反应时发生。

作文

A chemical reaction is a process that transforms one or more substances into different substances. This transformation occurs when the bonds between atoms are broken and new bonds are formed, resulting in the creation of new chemical compounds. Understanding chemical reactions is essential in various fields such as chemistry, biology, environmental science, and even engineering. These reactions are fundamental to life and the functioning of the universe.In everyday life, we encounter numerous examples of chemical reactions. For instance, when we cook food, we often witness the Maillard reaction, which is a type of chemical reaction that occurs between amino acids and reducing sugars, giving browned foods their distinctive flavor and color. Similarly, when iron rusts, it undergoes a chemical reaction with oxygen and moisture in the air, leading to the formation of iron oxide, commonly known as rust.The study of chemical reactions involves understanding the reactants (the starting materials) and products (the substances formed as a result of the reaction). The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction, which means that the total mass of the reactants must equal the total mass of the products.There are several types of chemical reactions, including synthesis, decomposition, single replacement, and double replacement reactions. In a synthesis reaction, two or more substances combine to form a new compound. For example, when hydrogen gas reacts with oxygen gas, water is produced. In contrast, a decomposition reaction involves breaking down a compound into simpler substances, such as when water is electrolyzed into hydrogen and oxygen gases.Single replacement reactions occur when an element replaces another element in a compound, while double replacement reactions involve the exchange of ions between two compounds. Each type of chemical reaction follows specific patterns and principles that can be predicted and analyzed using stoichiometry and reaction kinetics.In addition to their theoretical significance, chemical reactions have practical applications in various industries. For example, in pharmaceuticals, understanding chemical reactions is crucial for drug development and synthesis. In agriculture, fertilizers are designed based on chemical reactions that enhance plant growth and yield. Moreover, environmental scientists study chemical reactions to understand pollution and develop methods for remediation.In conclusion, chemical reactions are vital processes that facilitate the transformation of substances and are integral to numerous aspects of our daily lives. By studying and understanding these reactions, we can harness their power for innovation and improvement in various fields. Whether we are cooking, cleaning, or developing new technologies, chemical reactions play a pivotal role in shaping our world.

化学反应是一个将一种或多种物质转变为不同物质的过程。当原子之间的键被打破并形成新键时，这种转变就会发生，导致新化合物的产生。理解化学反应在化学、生物学、环境科学甚至工程等多个领域都是至关重要的。这些反应是生命和宇宙运作的基础。在日常生活中，我们遇到许多化学反应的例子。例如，当我们烹饪食物时，常常会看到美拉德反应，这是一种化学反应，发生在氨基酸和还原糖之间，使褐色食品具有独特的风味和颜色。同样，当铁生锈时，它与空气中的氧气和水分发生化学反应，形成氧化铁，通常称为锈。化学反应的研究涉及理解反应物（起始材料）和产物（反应结果形成的物质）。质量守恒定律表明，在化学反应中，物质不能被创造或毁灭，这意味着反应物的总质量必须等于产物的总质量。有几种类型的化学反应，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，两种或多种物质结合形成新化合物。例如，当氢气与氧气反应时，生成水。相反，分解反应涉及将化合物分解为更简单的物质，例如当水被电解成氢气和氧气时。单取代反应发生在一个元素替代化合物中的另一个元素时，而双取代反应涉及两个化合物之间的离子交换。每种类型的化学反应遵循特定的模式和原则，可以使用化学计量学和反应动力学进行预测和分析。除了理论意义外，化学反应在各个行业中也有实际应用。例如，在制药行业，理解化学反应对于药物开发和合成至关重要。在农业中，肥料的设计基于促进植物生长和增产的化学反应。此外，环境科学家研究化学反应以了解污染并开发修复方法。总之，化学反应是促进物质转变的重要过程，对我们日常生活的多个方面至关重要。通过研究和理解这些反应，我们可以利用它们的力量在各个领域进行创新和改进。无论是烹饪、清洁还是开发新技术，化学反应在塑造我们的世界中发挥着关键作用。