single bond

简明释义

单一合同

英英释义

例句

1.The government issued a single bond to fund infrastructure improvements.

政府发行了一只单一债券来资助基础设施改善。

2.He chose a single bond over stocks for his conservative investment strategy.

他选择了单一债券而不是股票，以符合他的保守投资策略。

3.A single bond can provide a steady income stream for retirees.

对于退休人员来说，一只单一债券可以提供稳定的收入来源。

4.Investors are often attracted to a single bond due to its lower risk.

投资者通常被单一债券吸引，因为它的风险较低。

5.The company decided to issue a single bond for its new project.

公司决定为其新项目发行一只单一债券。

作文

In the world of chemistry, the concept of a single bond is fundamental to understanding how atoms interact with each other. A single bond is formed when two atoms share one pair of electrons, allowing them to achieve greater stability. This type of bond is typically found in simple molecules such as hydrogen (H2) and chlorine (Cl2), where the atoms are held together by the shared electrons. The strength and characteristics of a single bond play a crucial role in determining the properties of the resulting compound.One of the most common examples of a single bond can be seen in water (H2O). In a water molecule, each hydrogen atom forms a single bond with the oxygen atom. This bonding arrangement not only contributes to the unique properties of water, such as its high boiling point and surface tension, but also enables it to act as a solvent for many substances. The presence of single bonds in water illustrates how these connections between atoms can lead to significant implications for both chemical behavior and biological systems.Understanding single bonds is also essential when studying organic chemistry. Many organic compounds contain carbon atoms that are connected by single bonds. For instance, in alkanes, which are saturated hydrocarbons, all carbon-carbon connections are single bonds. This saturation means that alkanes can only bond with hydrogen atoms, leading to a general formula of CnH2n+2. The presence of single bonds in these compounds affects their reactivity and physical properties, making them less reactive than unsaturated hydrocarbons, which contain double or triple bonds.Moreover, the concept of a single bond extends beyond mere electron sharing; it also encompasses the idea of bond length and bond energy. A single bond is generally longer and weaker than double or triple bonds, which means that compounds with single bonds may have different behaviors during chemical reactions. For example, the energy required to break a single bond is lower compared to that needed to break a double bond. This characteristic influences how easily a molecule can undergo reactions, thus affecting its overall stability.In summary, the single bond is a key concept in chemistry that represents the sharing of a pair of electrons between two atoms. Its significance is evident in various aspects of chemistry, from molecular formation to the understanding of chemical reactivity. By grasping the nature of single bonds, we can better comprehend the intricate relationships between atoms and the resulting compounds they form. As we delve deeper into the study of chemistry, recognizing the importance of single bonds will undoubtedly enhance our understanding of the molecular world around us.

在化学的世界中，单键的概念对于理解原子之间的相互作用至关重要。单键是当两个原子共享一对电子时形成的，这使它们能够实现更大的稳定性。这种类型的键通常存在于简单的分子中，例如氢气（H2）和氯气（Cl2），其中原子通过共享的电子结合在一起。单键的强度和特性在决定生成化合物的性质方面发挥着关键作用。一个常见的单键示例可以在水（H2O）中看到。在水分子中，每个氢原子与氧原子形成一个单键。这种键合排列不仅有助于水的独特性质，如其高沸点和表面张力，而且还使其能够作为许多物质的溶剂。水中单键的存在说明了原子之间的这些连接如何导致化学行为和生物系统的重要影响。理解单键在学习有机化学时也至关重要。许多有机化合物包含由单键连接的碳原子。例如，在烷烃中，所有碳-碳连接都是单键。这种饱和意味着烷烃只能与氢原子结合，导致一般公式为CnH2n+2。单键在这些化合物中的存在影响了它们的反应性和物理性质，使它们比含有双键或三键的不饱和烃反应性较低。此外，单键的概念不仅仅涉及电子共享；它还包括键长和键能的概念。单键通常比双键或三键更长且更弱，这意味着含有单键的化合物在化学反应中可能表现出不同的行为。例如，打破一个单键所需的能量低于打破一个双键所需的能量。这一特性影响了分子进行反应的难易程度，从而影响其整体稳定性。总之，单键是化学中的一个关键概念，代表着两个原子之间共享一对电子。其重要性在化学的各个方面都显而易见，从分子形成到化学反应性的理解。通过掌握单键的性质，我们可以更好地理解原子之间的复杂关系以及它们形成的化合物。随着我们深入研究化学，认识到单键的重要性无疑将增强我们对周围分子世界的理解。