reactants

简明释义

英[rɪˈæktənts]美[riˈæktənts]

n. [化学]反应物（reactant 的复数）；[化学]反应体

英英释义

单词用法

同义词

反义词

例句

1.So, the products react to give us reactants.

反应物通过反应得到产物。

2.And then you look at your reaction and you say, how many moles of reactants do I have?

然后你观察反应说，我有多少反应物？

3.The suitable organic imine reactants have a variety of compositions and structures.

合适的有机亚胺反应剂具有多种组成和结构。

4.PROFESSOR: So, our first question here is about limiting reactants.

教授：好，我们今天第一个问题,是关于限制反应。

5.And I want to know, I've got this mixture of reactants and products.

我想知道，我已经有了，反应物和产物的混合。

6.Products, reactants. Pretty simple, because I know how to calculate all this stuff.

上面是生成物，下面是反应物，非常简单，因为我知道如何计算所有这些配分函数。

7.The concentration of the reactants 反应物 affects the rate of the reaction significantly.

反应物的浓度显著影响反应速率。

8.In a chemical reaction, the starting substances are called reactants 反应物.

在化学反应中，起始物质称为reactants 反应物。

9.When balancing an equation, it is important to ensure that the number of atoms of each element in the reactants 反应物 equals that in the products.

在平衡方程时，确保每种元素在reactants 反应物和产物中的原子数量相等是很重要的。

10.The reactants 反应物 in this experiment were mixed in a beaker to observe the reaction.

在这个实验中，reactants 反应物被混合在一个烧杯中以观察反应。

11.Catalysts can speed up the reaction between reactants 反应物 without being consumed themselves.

催化剂可以加速reactants 反应物之间的反应，而自身不被消耗。

作文

In the study of chemistry, understanding the role of reactants is crucial for grasping how chemical reactions occur. A reactant is a substance that undergoes change during a chemical reaction. When two or more reactants combine, they interact in such a way that they form new substances called products. This transformation is fundamental to many processes in both nature and industry. For instance, in photosynthesis, plants use sunlight to convert carbon dioxide and water, which are the reactants, into glucose and oxygen. This process not only sustains plant life but also supports the entire ecosystem by providing oxygen for animals and humans.The concept of reactants extends beyond simple equations; it encapsulates the idea of transformation and energy exchange. During a reaction, the bonds between atoms in the reactants break, and new bonds form to create products. This bond-breaking and bond-forming process involves energy changes, often represented in thermodynamic terms. For example, in exothermic reactions, energy is released, while endothermic reactions absorb energy. Understanding these energy changes is vital for chemists as they design experiments and industrial processes.Moreover, the concentration and state of reactants can significantly affect the rate of a chemical reaction. In many cases, increasing the concentration of reactants leads to a higher reaction rate because there are more particles available to collide and react. Similarly, the physical state of reactants—whether they are solids, liquids, or gases—can influence how quickly they react. For example, powdered solids tend to react faster than large chunks because they have a greater surface area exposed to other reactants.In laboratory settings, chemists often manipulate various conditions to optimize the reaction rates involving reactants. Temperature, pressure, and even the presence of catalysts can all play a significant role. A catalyst is a substance that speeds up a reaction without being consumed in the process, allowing reactants to convert to products more efficiently. This principle is widely applied in the manufacturing of chemicals, pharmaceuticals, and many other products where time and efficiency are crucial.Furthermore, the study of reactants and their reactions has led to significant advancements in technology and medicine. For instance, understanding how reactants behave in biochemical pathways has paved the way for drug development and disease treatment. By manipulating reactants at the molecular level, scientists can create medications that target specific biological processes, enhancing therapeutic outcomes.In conclusion, reactants are foundational elements in the field of chemistry, representing the starting materials that undergo transformation during chemical reactions. Their study not only helps us understand the basic principles of chemistry but also drives innovations across various scientific disciplines. As we continue to explore the interactions of reactants, we unlock new possibilities for improving our world through science and technology.

在化学研究中，理解反应物的作用对于掌握化学反应的发生至关重要。反应物是指在化学反应过程中发生变化的物质。当两个或多个反应物结合时，它们以某种方式相互作用，形成新的物质，称为产物。这种转变对自然界和工业中的许多过程都是基础性的。例如，在光合作用中，植物利用阳光将二氧化碳和水（即反应物）转化为葡萄糖和氧气。这个过程不仅维持了植物的生命，还通过为动物和人类提供氧气来支持整个生态系统。反应物的概念不仅仅局限于简单的方程式；它涵盖了转化和能量交换的概念。在反应过程中，反应物中原子之间的键断裂，新的键形成以创造产物。这种断键和成键的过程涉及能量变化，通常以热力学的术语表示。例如，在放热反应中，能量释放，而吸热反应则吸收能量。理解这些能量变化对化学家设计实验和工业过程至关重要。此外，反应物的浓度和状态会显著影响化学反应的速率。在许多情况下，增加反应物的浓度会导致更高的反应速率，因为可供碰撞和反应的粒子数量增多。同样，反应物的物理状态——无论是固体、液体还是气体——都可以影响它们的反应速度。例如，粉末状固体往往比大块固体反应得更快，因为它们与其他反应物接触的表面积更大。在实验室环境中，化学家常常操纵各种条件来优化涉及反应物的反应速率。温度、压力甚至催化剂的存在都可以发挥重要作用。催化剂是一种加速反应而不被消耗的物质，使得反应物更有效地转化为产物。这一原理广泛应用于化学、制药和许多其他产品的制造中，其中时间和效率至关重要。此外，反应物及其反应的研究推动了技术和医学的重大进展。例如，了解反应物在生化途径中的行为为药物开发和疾病治疗铺平了道路。通过在分子水平上操纵反应物，科学家可以创造针对特定生物过程的药物，从而增强治疗效果。总之，反应物是化学领域的基础元素，代表在化学反应中发生转化的起始材料。它们的研究不仅帮助我们理解化学的基本原理，还推动了各个科学学科的创新。随着我们继续探索反应物的相互作用，我们为通过科学和技术改善我们的世界打开了新的可能性。