今天具体介绍下门捷列夫元素周期表的特点。排序,周期,组等特性。同周期的元素具有相同的化合价,同组元素化学性质类似。据文中调侃,如果我们不了解这些背景知识,可能要上夜校自己补习一下(学费找谁报销啊?)~~~

❤《万物简史》推出部落节目版,戳这里订阅:http://bulo.hujiang.com/menu/6004/


万物简史:PART II CH 7基本物质(18)



书本的朗读语音很charming的磁性英音~~~大家可以好好学着模仿哦~~~!!
因为原著为美国人所写,单词采用美式拼法,不抄全文,也不用写序号。答完一空换行继续下一空作答。文中需听写单词或词组用[-No-]表示,句子用[---No---]表示。请边听写边理解文意,根据下面的TIPS训练听写。这样可以提高听力准确度,并为训练听译打下基础哦~~~


TIPS听写训练点:单词拼写,时态,单复数,连读,长难句(请边听边用符号先记下内容,然后自己回头组织语句,最后校对,不要逐字逐句听写)当然啦,还有很多相当地道不错的表达方法可以顺道一起学到!

万物简史:PART II CH 7基本物质(18)



Hints:
periodically
periodic
horizontal

万物简史:PART II CH 7基本物质(18)



Mendeleyev used a slightly different approach, placing his elements into groups of seven, but employed fundamentally the same principle. Suddenly the idea seemed [-1-] and wondrously perceptive. [---2---]

Mendeleyev was said to [-3-] the card game known as solitaire in North America and patience elsewhere, wherein cards are arranged [-4-]. [---5---] This instantly showed one set of relationships when read up and down and another when read from side to side. [---6---] Thus copper sits on top of silver and silver sits on top of gold because of their chemical affinities as metals, while helium, neon, and argon are in a column [-7-] gases. (The actual, formal determinant in the ordering is something called their electron valences, for which you will have to enroll in night classes if you wish an understanding.) The horizontal rows, meanwhile, arrange the chemicals [-8-] by the number of protons in their nuclei—what is known as their atomic number.

万物简史:PART II CH 7基本物质(18)



万物简史:PART II CH 7基本物质(18)

brilliant Because the properties repeated themselves periodically, the invention became known as the periodic table. have been inspired by by suit horizontally and by number vertically Using a broadly similar concept, he arranged the elements in horizontal rows called periods and vertical columns called groups. Specifically, the vertical columns put together chemicals that have similar properties. made up of in ascending order门捷列夫采用了一种稍稍不同的方法,把每七个元素分成一组,但使用了完全相同的前提。突然之间,这方法似乎很出色,视角很清晰。由于那些特点周期性地重复出现,所以这项发明就被叫做"周期表"。   据说,门捷列夫是从北美洲的单人牌戏获得了灵感,从别处获得了耐心。在那种牌戏里,纸牌按花色排成横列,按点数排成纵行。他利用一种十分相似的概念,把横列叫做周期,纵行叫做族。上下看,马上可以看出一组关系;左右看,看出另一组关系。具体来说,纵列把性质类似的元素放在一起。因此,铜的位置在银的上面,银的位置在金的上面,因为它们都具有金属的化学亲和性;而氦、氖和氩处于同一纵行,因为它们都是气体。(决定排列顺序的,实际上是它们的电子价。若要搞懂电子价,你非得去报名上夜校。)与此同时,元素按照它们核里的质子数--叫做原子序数--从少到多地排成横列。