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...
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...
12 Seaborgium - Periodic Table of Videos 09:03 Lawrencium - Periodic Table of Videos 05:15 Lead - Periodic Table of Videos 08:08 Lithium (new) - Periodic Table of Videos 10:29 Livermorium (NEW ELEMENT) - Periodic Table of Videos 06:31 Scandium - Periodic Table of Videos 07:40 ...
12 Seaborgium - Periodic Table of Videos 09:03 Lawrencium - Periodic Table of Videos 05:15 Lead - Periodic Table of Videos 08:08 Lithium (new) - Periodic Table of Videos 10:29 Livermorium (NEW ELEMENT) - Periodic Table of Videos 06:31 Scandium - Periodic Table of Videos 07:40 ...
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...
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...
6、nts repeated their chemical properties every eighth element.The history of the development of the periodic table of elementsThe Fathers of the Periodic Table Lothar Meyer and Dmitri Ivanovich Mendeleev independently produced remarkably similar versions of the periodic table of elements at the essent ...
Only elements go onto the periodic table, andsteel is an alloy, not an element.Steelis made from multiple elements. Its basic formula includesiron(Fe) with trace amounts of carbon (C). Different types of steel made add other elements to enhance properties. For example, chromium (Cr) may ...
1. The Elements and The Periodic Table(元素和周期表) The number of protons in the nucleus of an atom is referred to as the atomic number, or proton number, Z. The numbers of electrons in an electrically neutral atom is also equal to the atomic number, Z. The total mass of an atom ...
Periodic table of elements with information on chemical elements like gold, silver, iron, neon, helium, chlorine, copper, cobalt, and more