|
所在平台: Udemy |
课程主页: https://www.udemy.com/course/carbon-and-its-compounds/
课程评论：没有评论
**课程名称：碳及其化合物** **课程概述：** 本课程深入探讨了碳——生命最重要的元素，以及它为何是生命存在不可或缺的基石。课程将展示碳如何在生命必需的化合物中扮演核心角色，解释其能够形成数量最多且对日常生活极有价值的化合物的原因。 课程强调，生命体生存、生长和繁衍离不开碳。碳是一种有限资源，以多种形式在地球上循环，从而为生物体提供可利用性，并与大气和水体（如池塘和海洋）中的其他化学反应保持平衡。 作为构成生命体的重要组成部分，碳与氮、氧一同成为有机生命的必需砌块。据估计，碳在人体中的含量约为18%。碳之所以如此重要，在于其能够与其它元素形成四种不同化学键的独特能力。 课程还将介绍碳如何在地球的海洋、大气、生态系统和岩石圈之间进行交换和“循环”。所有生命有机体均由碳化合物构成，碳是生命的基本组成单元，并且是许多化学过程的重要参与者。 **课程重点提及的碳的物理和化学性质：** * **原子序数：** 6 * **质量数：** 12.0 * **原子质量：** 12.011 * **熔点：** 3550°C * **沸点：** 4830 °C * **存在形式：** 单质及化合物 * **在人体中的含量：** 约18% * **化合物形成能力：** 形成化合物数量最多 * **地壳中的含量：** 仅占0.02% * **在元素周期表中的位置：** 属于第IV族
Carbon is the most important element to life. Without this element, life as we know it would not exist. As you will see, carbon is the central element in compounds necessary for life. Carbon is most important element because it forms largest number of compounds which are useful in our daily life.Living things need carbon in order to live, grow, and reproduce. Carbon is a finite resource that cycles through the earth in many forms.This makes carbon available to living organisms and remains in balance with other chemical reactions in the atmosphere and in bodies of water like pondsand oceans. Carbon is an important constituent of living beings. Along with Nitrogen and oxygen, carbon is one of the essential building blocks of organic life. Carbon forms about 18% of the human body. Carbon is integral because of its unique ability to form four different bonds with other elements.Carbon is exchanged, or "cycled" among Earth's oceans, atmosphere, ecosystem, and geosphere. All living organisms are built of carbon compounds. It is the fundamental building block of life and an important component of many chemical processes. Carbon. Its atomic number is 6. Its mass number is 12.0. Its atomic mass is 12.011. Its melting point is 3550°C and boiling point is 4830 °C.It occurs in free state as well as in combined state. 18% of our body is made up of carbon. It forms largest number of compounds. The earth crust contains only 0.02% of carbon. Carbon belongs to the group IV of the periodic table.
