molecule

简明释义

英[ˈmɒlɪkjuːl]美[ˈmɑːlɪkjuːl]

n. 分子，摩尔；少量，一点儿；微小颗粒，微粒

复 数 m o l e c u l e s

英英释义

单词用法

同义词

反义词

例句

1.Simply stated, a gas molecule can "evaporate" from a planet if it reaches a speed known as the escape velocity.

简单地说，如果气体分子达到逃逸速度，它就能从一颗行星上“蒸发”。

2.Water is a very unique molecule.

水是一个特别的分子。

3.The effect occurs because of a molecule called staphylococcal lipoteichoic acid that acts on keratinocytes.

由于葡萄球菌脂磷壁酸分子作用在角化细胞上产生了这个结果

4.There's also rotational disorder if it's a molecule.

如果是分子也会有旋转无序。

5.Likewise, if we look at fluorine in its diatomic molecule, it is 160 kilojoules per mole.

同样的，如果我们观察二价的氟，它是每摩尔160焦。

6.You have a symmetric molecule, and let's see.

一个非常对称的分子，再看看。

7.Who, then, can calculate the course of a molecule?

谁又能计算一个分子的历程呢？

8.Water is made up of two hydrogen atoms and one oxygen atom, forming a single molecule of H2O.

水由两个氢原子和一个氧原子组成，形成一个单一的分子 H2O。

9.The molecule of glucose is essential for energy production in our bodies.

葡萄糖的分子对我们身体的能量生产至关重要。

10.A molecule can be as simple as O2 or as complex as DNA.

一个分子可以简单如O2，也可以复杂如DNA。

11.In chemistry, we study how different molecules interact with each other.

在化学中，我们研究不同的分子如何相互作用。

12.The molecule structure determines the properties of a substance.

分子的结构决定了物质的性质。

作文

The concept of a molecule (分子) is fundamental to the understanding of chemistry and biology. A molecule is defined as the smallest particle of a substance that retains the chemical properties of that substance. It consists of two or more atoms bonded together, which can be either of the same element or different elements. For example, a water molecule (水分子) is made up of two hydrogen atoms and one oxygen atom, represented chemically as H2O. This simple structure forms the basis for life on Earth, illustrating how molecules (分子) can combine to create complex systems.In the realm of chemistry, molecules (分子) can be classified into two main categories: organic and inorganic. Organic molecules (有机分子) primarily contain carbon and are vital for life. They include carbohydrates, proteins, lipids, and nucleic acids, all of which play crucial roles in biological processes. On the other hand, inorganic molecules (无机分子) do not primarily contain carbon and include substances like salts, metals, and minerals. Understanding the differences between these two types of molecules (分子) is essential for studying various scientific fields, including biochemistry and environmental science.The formation of a molecule (分子) occurs through chemical bonds, which are the forces that hold atoms together. There are several types of chemical bonds, including covalent bonds, ionic bonds, and metallic bonds. Covalent bonds involve the sharing of electrons between atoms, resulting in the formation of stable molecules (分子). Ionic bonds, on the other hand, occur when one atom donates an electron to another, creating charged ions that attract each other. Metallic bonds involve a sea of shared electrons that allow metals to conduct electricity and heat. Each type of bond contributes to the unique properties of the resulting molecule (分子).Furthermore, the shape and structure of a molecule (分子) are critical to its function. The three-dimensional arrangement of atoms within a molecule (分子) determines how it interacts with other molecules (分子) and influences its reactivity. For instance, enzymes, which are biological catalysts, have specific shapes that allow them to bind to substrates and facilitate chemical reactions. This specificity highlights the importance of molecules (分子) in biological systems, where even slight changes in structure can lead to significant changes in function.In addition to their role in chemistry and biology, molecules (分子) also play a significant part in everyday life. The air we breathe is composed of various molecules (分子), such as nitrogen, oxygen, and carbon dioxide. Food is made up of organic molecules (有机分子) that provide energy and nutrients to our bodies. Even our own bodies are composed of trillions of molecules (分子) working together to sustain life. Understanding how molecules (分子) function and interact with one another helps us appreciate the complexity of the natural world.In conclusion, a molecule (分子) is a vital concept in both chemistry and biology, serving as the building block of matter. By learning about the different types of molecules (分子), their formation, and their functions, we gain insight into the intricate processes that govern life and the universe. The study of molecules (分子) not only deepens our understanding of science but also enhances our appreciation for the complexity and beauty of the world around us.

分子的概念对于理解化学和生物学至关重要。分子被定义为保留该物质化学性质的最小粒子。它由两个或多个原子结合而成，这些原子可以是同种元素或不同元素。例如，水分子由两个氢原子和一个氧原子组成，化学式为H2O。这种简单的结构构成了地球生命的基础，说明了分子如何结合以创造复杂的系统。在化学领域，分子可以分为两大类：有机和无机。有机分子主要含有碳，是生命所必需的。它们包括碳水化合物、蛋白质、脂质和核酸，所有这些都在生物过程中发挥着关键作用。另一方面，无机分子不主要包含碳，包括盐、金属和矿物等物质。理解这两种类型的分子之间的区别对于研究各种科学领域（包括生物化学和环境科学）至关重要。分子的形成通过化学键发生，化学键是将原子结合在一起的力量。化学键有几种类型，包括共价键、离子键和金属键。共价键涉及原子之间电子的共享，从而形成稳定的分子。离子键则发生在一个原子将电子捐赠给另一个原子时，形成相互吸引的带电离子。金属键涉及共享电子的海洋，使金属能够导电和导热。每种类型的键都对生成的分子的独特性质做出贡献。此外，分子的形状和结构对其功能至关重要。分子内部原子的三维排列决定了它如何与其他分子相互作用，并影响其反应性。例如，酶是生物催化剂，具有特定的形状，可以与底物结合并促进化学反应。这种特异性突显了分子在生物系统中的重要性，在这些系统中，即使是结构的轻微变化也会导致功能的显著变化。除了在化学和生物学中的作用外，分子在日常生活中也扮演着重要角色。我们呼吸的空气由氮气、氧气和二氧化碳等各种分子组成。食物由有机分子构成，为我们的身体提供能量和营养。甚至我们自己的身体也是由数万亿个分子共同工作以维持生命。了解分子如何运作和相互作用，帮助我们欣赏自然界的复杂性。总之，分子是化学和生物学中一个重要的概念，作为物质的构建块。通过学习不同类型的分子、它们的形成和功能，我们获得了对支配生命和宇宙的复杂过程的洞察。对分子的研究不仅加深了我们对科学的理解，也增强了我们对周围世界复杂性和美丽的欣赏。