periodic system

简明释义

周期系

英英释义

例句

1.In a physics class, we learned how the periodic system 周期系统 is crucial for understanding chemical reactions.

在物理课上，我们学习了周期系统 周期系统对于理解化学反应的重要性。

2.Students often use the periodic system 周期系统 to memorize the properties of different elements.

学生们常常使用周期系统 周期系统来记忆不同元素的性质。

3.The periodic system 周期系统 allows scientists to identify trends among the elements.

这个周期系统 周期系统使科学家能够识别元素之间的趋势。

4.The teacher explained the significance of the periodic system 周期系统 in predicting element behavior.

老师解释了周期系统 周期系统在预测元素行为中的重要性。

5.The periodic system 周期系统 helps chemists organize elements based on their atomic number.

这个周期系统 周期系统帮助化学家根据原子序数组织元素。

作文

The concept of the periodic system is fundamental in the field of chemistry. It refers to the organization of chemical elements based on their atomic number, electron configuration, and recurring chemical properties. This systematic arrangement allows scientists and students alike to understand the relationships between different elements and predict their behavior in various chemical reactions. The most recognized representation of the periodic system is the Periodic Table of Elements, which was first created by Dmitri Mendeleev in 1869.In the periodic system, elements are arranged in rows called periods and columns known as groups or families. Each period corresponds to the number of electron shells that an atom has, while each group contains elements that share similar properties due to their similar valence electron configurations. For example, Group 1 elements, known as alkali metals, are highly reactive and have one electron in their outermost shell, making them eager to lose that electron during chemical reactions. On the other hand, Group 18 elements, the noble gases, have full outer electron shells, which makes them very stable and unreactive.Understanding the periodic system is crucial for predicting how different elements will interact with one another. For instance, knowing that sodium (Na) is in Group 1 and chlorine (Cl) is in Group 17 helps us predict that these two elements will react to form sodium chloride (NaCl), commonly known as table salt. This predictive power is one of the reasons why the periodic system is so valuable in both educational settings and practical applications in laboratories.Moreover, the periodic system is not static; it evolves as new elements are discovered and synthesized. Scientists have been able to create synthetic elements that do not occur naturally, such as element 118, oganesson (Og). These advancements challenge our understanding and encourage ongoing research into the properties and potential uses of these new elements. The dynamic nature of the periodic system reflects the ever-expanding knowledge we have about the atomic world and its complexities.In addition to its scientific significance, the periodic system has a cultural impact as well. It has inspired art, literature, and education, becoming a symbol of scientific progress. Many students first encounter the periodic system in high school, where it serves as a foundation for their understanding of chemistry. Teachers often use creative methods to engage students with the periodic system, incorporating games and visual aids to make learning more interactive.In conclusion, the periodic system is an essential framework in the study of chemistry that organizes elements in a meaningful way. Its structure allows for the prediction of chemical behavior, the exploration of new elements, and the inspiration of future generations of scientists. As we continue to explore the intricacies of matter, the periodic system will undoubtedly remain a cornerstone of scientific education and discovery. Understanding this system not only enhances our knowledge of chemistry but also enriches our appreciation for the natural world around us.

“周期系统”的概念在化学领域是基础性的。它指的是根据元素的原子序数、电子配置和反复出现的化学性质对化学元素进行组织。这种系统的排列使科学家和学生能够理解不同元素之间的关系，并预测它们在各种化学反应中的行为。最为人所知的“周期系统”的表示是元素周期表，它最早由德米特里·门捷列夫于1869年创建。在“周期系统”中，元素按行排列称为周期，按列排列称为族或家族。每个周期对应于原子具有的电子层数，而每个族包含具有相似性质的元素，因为它们的价电子配置相似。例如，第一组元素，称为碱金属，反应性很强，外层只有一个电子，使它们在化学反应中急于失去该电子。另一方面，第18组元素，惰性气体，外层电子壳满，因此非常稳定且不反应。理解“周期系统”对于预测不同元素如何相互作用至关重要。例如，知道钠（Na）位于第一组，氯（Cl）位于第17组，可以帮助我们预测这两个元素将反应形成氯化钠（NaCl），通常被称为食盐。这种预测能力是“周期系统”在教育环境和实验室实践应用中如此有价值的原因之一。此外，“周期系统”并不是静态的；它随着新元素的发现和合成而发展。科学家们已经能够创造出不自然存在的合成元素，例如118号元素，俄亥俄（Og）。这些进展挑战了我们的理解，并鼓励对这些新元素的性质和潜在用途进行持续研究。“周期系统”的动态特性反映了我们对原子世界及其复杂性日益扩展的知识。除了科学意义外，“周期系统”还具有文化影响力。它激发了艺术、文学和教育，成为科学进步的象征。许多学生第一次接触“周期系统”是在高中，在那里它作为他们理解化学的基础。教师们常常使用创造性的方法来吸引学生与“周期系统”的互动，包括游戏和视觉辅助工具，使学习变得更加互动。总之，“周期系统”是化学研究中一种必不可少的框架，以有意义的方式组织元素。它的结构允许对化学行为的预测，探索新元素，并激励未来一代科学家。随着我们继续探索物质的复杂性，“周期系统”无疑将继续成为科学教育和发现的基石。理解这个系统不仅增强了我们对化学的知识，也丰富了我们对周围自然世界的欣赏。