chemical bond

简明释义

化学键

英英释义

例句

1.When two atoms share electrons, they form a covalent chemical bond 化学键.

当两个原子共享电子时，它们形成一个共价化学键。

2.Ionic chemical bonds 化学键 occur when one atom transfers electrons to another.

离子化学键发生在一个原子将电子转移给另一个原子时。

3.The strength of a chemical bond 化学键 determines the stability of a molecule.

化学键的强度决定了分子的稳定性。

4.In water, each hydrogen atom is connected to the oxygen atom by a chemical bond 化学键.

在水中，每个氢原子通过化学键连接到氧原子。

5.The chemical bond 化学键 between carbon atoms in organic compounds is crucial for life.

有机化合物中碳原子之间的化学键对生命至关重要。

作文

The concept of a chemical bond is fundamental to the field of chemistry, as it explains how atoms interact and combine to form molecules. A chemical bond can be defined as the force that holds two or more atoms together in a molecule. This interaction is crucial for the formation of various substances that make up our world, from simple gases like oxygen to complex organic compounds found in living organisms.There are primarily three types of chemical bonds: ionic bonds, covalent bonds, and metallic bonds. Each type has distinct characteristics and plays a unique role in the properties of the materials formed. For instance, an ionic bond occurs when one atom donates an electron to another, resulting in the formation of charged ions that attract each other. This type of bond is commonly found in salts, such as sodium chloride, where sodium ions and chloride ions come together to create a stable compound.On the other hand, a covalent bond involves the sharing of electrons between atoms. This type of chemical bond is prevalent in organic molecules, where carbon atoms share electrons with hydrogen, oxygen, and other elements. The strength and stability of covalent bonds are vital for the structure of DNA, proteins, and many other biological macromolecules. The ability of atoms to share electrons allows for the diversity of life on Earth, as these bonds enable the formation of complex structures necessary for biological functions.Metallic bonds, another type of chemical bond, occur between metal atoms. In this case, electrons are not shared or transferred but are instead delocalized, forming a 'sea of electrons' that can move freely around the positively charged metal ions. This unique arrangement gives metals their characteristic properties, such as electrical conductivity and malleability. The understanding of metallic bonds is essential in fields like materials science, where the design of new alloys and metals relies on manipulating these bonds.In summary, the study of chemical bonds is crucial for understanding the behavior of matter. The interactions between atoms through these bonds dictate the physical and chemical properties of substances. By exploring how different types of chemical bonds form and break, scientists can predict the behavior of materials under various conditions, leading to advancements in technology, medicine, and environmental science.For students and professionals in the field of chemistry, mastering the concept of chemical bonds is essential. It lays the groundwork for more advanced topics, such as reaction mechanisms, molecular geometry, and thermodynamics. A solid grasp of chemical bonds will not only enhance one's understanding of chemical reactions but also foster a greater appreciation for the intricate connections that form the basis of all matter in the universe.

化学键的概念是化学领域的基础，因为它解释了原子如何相互作用并结合形成分子。化学键可以定义为将两个或多个原子结合在一起的力。这种相互作用对形成构成我们世界的各种物质至关重要，从简单的气体如氧气到复杂的有机化合物，这些化合物存在于生物体中。主要有三种类型的化学键：离子键、共价键和金属键。每种类型都有其独特的特征，并在形成材料的性质中发挥着独特的作用。例如，离子键发生在一个原子将电子捐赠给另一个原子时，从而形成带电离子相互吸引。这种类型的键通常存在于盐类中，例如氯化钠，其中钠离子和氯离子结合在一起形成稳定的化合物。另一方面，共价键涉及原子之间的电子共享。这种类型的化学键在有机分子中很常见，其中碳原子与氢、氧及其他元素共享电子。共价键的强度和稳定性对DNA、蛋白质以及许多其他生物大分子的结构至关重要。原子共享电子的能力使地球上的生命多样化成为可能，因为这些键使得形成生物功能所需的复杂结构成为可能。金属键是另一种类型的化学键，发生在金属原子之间。在这种情况下，电子不是被共享或转移，而是被去局域化，形成一个“电子海”，可以在带正电的金属离子周围自由移动。这种独特的排列赋予金属其特有的性质，如电导率和可锻性。理解金属键对于材料科学等领域至关重要，其中新合金和金属的设计依赖于操控这些键。总之，研究化学键对于理解物质的行为至关重要。通过这些键之间的相互作用，原子之间的关系决定了物质的物理和化学性质。通过探索不同类型的化学键如何形成和断裂，科学家可以预测材料在各种条件下的行为，从而推动技术、医学和环境科学的进步。对于化学领域的学生和专业人士来说，掌握化学键的概念至关重要。这为更高级的主题奠定了基础，如反应机制、分子几何和热力学。对化学键的扎实理解不仅会增强对化学反应的理解，还将促进对构成宇宙中所有物质基础的复杂联系的更大欣赏。