chemical equation

简明释义

化学方程

英英释义

例句

1.A balanced chemical equation 化学方程式 shows that mass is conserved during a chemical reaction.

一个平衡的化学方程式表明在化学反应过程中质量是守恒的。

2.The teacher explained that a chemical equation 化学方程式 represents the reactants and products in a chemical reaction.

老师解释说，化学方程式代表化学反应中的反应物和产物。

3.Students often struggle with understanding how to derive a chemical equation 化学方程式 from a word equation.

学生们常常难以理解如何从文字方程推导出化学方程式。

4.In chemistry class, we learned how to balance a chemical equation 化学方程式 for the reaction between hydrogen and oxygen.

在化学课上，我们学习了如何平衡氢和氧之间反应的化学方程式。

5.When writing a chemical equation 化学方程式, it's important to include states of matter like solid, liquid, or gas.

在写化学方程式时，重要的是要包括物质的状态，如固体、液体或气体。

作文

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products involved. In chemistry, understanding chemical equations is crucial for grasping how substances interact with one another. For instance, when hydrogen gas reacts with oxygen gas, it forms water, which can be represented by the simple chemical equation: 2H₂ + O₂ → 2H₂O. This equation illustrates that two molecules of hydrogen react with one molecule of oxygen to produce two molecules of water.The left side of the chemical equation lists the reactants, while the right side shows the products. The arrow indicates the direction of the reaction, pointing from reactants to products. Each element in the equation is represented by its chemical symbol, and coefficients are used to balance the equation, ensuring that the number of atoms for each element is conserved throughout the reaction.Balancing chemical equations is a fundamental skill in chemistry. It reflects the Law of Conservation of Mass, which states that matter cannot be created or destroyed in a chemical reaction. Therefore, when writing a chemical equation, one must ensure that the same number of each type of atom appears on both sides of the equation. This process often requires trial and error, as well as a solid understanding of stoichiometry.Moreover, chemical equations can be classified into different types based on the nature of the reactions they represent. For example, synthesis reactions involve combining two or more reactants to form a single product, whereas decomposition reactions involve breaking down a compound into simpler substances. Other types include single replacement reactions, double replacement reactions, and combustion reactions. Each type has its own characteristics and follows specific patterns that can be identified through chemical equations.In laboratory settings, chemical equations play a vital role in predicting the outcomes of reactions. Chemists often use them to calculate yields, determine the amount of reactants needed, and understand the energy changes that occur during reactions. By analyzing chemical equations, scientists can also explore reaction kinetics and thermodynamics, gaining insight into how quickly a reaction occurs and the energy changes involved.Furthermore, chemical equations are not just limited to theoretical applications; they are essential in various industries. For example, in pharmaceuticals, understanding chemical equations allows chemists to develop new drugs and optimize their production processes. In environmental science, chemical equations help in assessing pollution levels and devising strategies for remediation.In conclusion, mastering chemical equations is a fundamental aspect of studying chemistry. They serve as the language of chemistry, enabling scientists to communicate complex ideas succinctly. Whether in academic research, industrial applications, or environmental studies, chemical equations are indispensable tools for understanding the intricate world of chemical reactions. As students delve deeper into the subject, they will find that the ability to write and interpret chemical equations opens up a wealth of knowledge and opportunities in the field of science.

化学方程式是化学反应的符号表示，显示了参与反应的反应物和产物。在化学中，理解化学方程式对于掌握物质之间如何相互作用至关重要。例如，当氢气与氧气反应时，它会形成水，这可以用简单的化学方程式表示为：2H₂ + O₂ → 2H₂O。该方程式说明两个氢分子与一个氧分子反应生成两个水分子。化学方程式的左侧列出反应物，而右侧则显示产物。箭头指示反应的方向，从反应物指向产物。方程中的每个元素都用其化学符号表示，系数用于平衡方程，确保反应过程中每种元素的原子数量得以保持。平衡化学方程式是化学中的一项基本技能。它反映了质量守恒定律，即在化学反应中，物质不能被创造或消灭。因此，在书写化学方程式时，必须确保在方程的两侧出现相同数量的每种类型的原子。这个过程通常需要反复试验，以及对化学计量学的扎实理解。此外，化学方程式可以根据它们所代表的反应性质进行分类。例如，合成反应涉及将两个或多个反应物结合形成单一产品，而分解反应则涉及将化合物分解为更简单的物质。其他类型包括单取代反应、双取代反应和燃烧反应。每种类型都有其特征，并遵循特定的模式，可以通过化学方程式识别。在实验室环境中，化学方程式在预测反应结果方面发挥着至关重要的作用。化学家经常使用它们来计算产量、确定所需的反应物数量以及理解反应过程中发生的能量变化。通过分析化学方程式，科学家还可以探索反应动力学和热力学，深入了解反应发生的速度和涉及的能量变化。此外，化学方程式不仅限于理论应用；它们在各个行业中都是必不可少的工具。例如，在制药行业，理解化学方程式使化学家能够开发新药并优化其生产过程。在环境科学中，化学方程式有助于评估污染水平并制定修复策略。总之，掌握化学方程式是学习化学的基本方面。它们作为化学的语言，使科学家能够简洁地传达复杂的思想。无论是在学术研究、工业应用还是环境研究中，化学方程式都是理解化学反应复杂世界的重要工具。当学生深入研究这一主题时，他们会发现，能够书写和解释化学方程式为他们打开了丰富的知识和科学领域的机会。