根据第一段中remember that the periodic table is used to organize all the elements, or things that make up(组成)our world.可知是组成我们的世界的东西,故选B。 根据第二段开头Elements are all around us.可知元素遍布我们周围,后面列举了一些常见的元素,故选A。 根据文中Last December, scientists from...
Iron element from periodic table on futuristic round shiny metallic icon 3D render,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、
2.1.2 单质 - Element 关于单质需要注意的是,”元素“与“单质”的英文都是“element”,因此需要根据语境来判断该英语单词的含义。有时为了去歧义,“单质”的英文也会被写成“free element”或“pure element”或“elementary substance”来与“元素”区分。 特定单质的英文名称同理,例如“氢元素”与“氢气/氢单质...
Metal hexagonal block representing the periodic table element Iron. Presented as black text on a white backing plate with a black and white gradient background. This image is a 3d render.,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业
2 Transition Metals More so than any of the other major groups of elements in the periodic table, the transition metals have shaped human history and have been the workhorses of industry. The discovery of metallic copper ended the St...
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Alright, let's dive into today's topic. In this episode, we will be learning about Chapter 78, which is titled 'The Periodic Table'. The section we will focus on today is 78.1, THE PERIODIC TABLE. 好了,让我们开始今天的话题。...
Elements are all around us. Iron is one of the commonest elements found within the Earth. You probably know the element oxygen. It is the element that we b (2) in all the time. And elements can combine (结合) to make new things l (3) H2O. This is hydrogen and oxygen put together...
Well,there's some big news about this special table,but first,remember that the periodic table is used for all the elements(元素),or things that make up our world. Elements are all around us.Iron is one of the most common elements found on the earth.You probably know the element oxygen...
The Periodic Table of Elements 1 HYDROGEN H 1 7 6 4 BERYLLIUM 3 LITHIUM Li 23 Be 9 24 CARBON C 12 23 Atomic Number = Number of Protons = Number of Electrons Chemical Symbol Chemical Name Atomic Weight = Number of Protons + Number of Neutrons* 5 6 2 BORON B 11 27 CARBON C 12 28...