yet both the first table and the modern periodic table are important for the same reason: The periodic table organizes elements according to similar properties so you can tell the characteristics of an element just by looking at its location on the table. ...
百度试题 结果1 题目The periodic table is an important part ___ chemistry. A. of B. for C. in D. at 相关知识点: 试题来源: 解析 A。“an important part of sth.”表示“某物的重要部分”,是固定搭配。反馈 收藏
(2)The periodic table is mentioned to prove that .A. even the widely accepted can be challenged B. students are generally ignorant of science C. most previous researches are out of date D. science has been developing with time 相关知识点: ...
题目The periodic table is used to organize ___. A. elements B. compounds C. reactions D. mixtures 相关知识点: 试题来源: 解析 A。元素周期表是用来组织元素的,“elements”是元素,“compounds”是化合物,“reactions”是反应,“mixtures”是混合物。反馈 收藏...
The periodic table is a chart that shows___. A. all the elements in the universe B. only the elements found on Earth C. most of the elements known to humans D. some of the common E. lements 相关知识点: 试题来源: 解析 C。
The periodic table of chemical elements is one of the most important achievements in the history of chemistry. It has had a profound impact on modern chemistry. The development of the periodic table is a long and fascinating story. In the early days, chemists were trying to find a way to ...
A. the color of elements. B. the size of elements. C. the atomic number of elements. D. the reactivity of E. lements. 相关知识点: 试题来源: 解析 C。元素周期表是按照元素的原子序数排列的。选项 A 颜色不是排列依据;选项 B 大小不是主要依据;选项 D 反应性不是排列的基础。反馈...
题目The periodic table is arranged in order of increasing ___. A. atomic number B. atomic weight C. density D. melting point 相关知识点: 试题来源: 解析 B。原因:文中提到“Mendeleev arranged the elements in order of increasing atomic weight.”。 反馈 收藏 ...
The Periodic Table is a table of all the elements we know about today. Elements are placed in order of atomic number ( number of protons in the nucleus ).
Periodic tableMadelung ruleThis article considers two important traditions concerning the chemical elements. The first is the meaning of the term "element" including the distinctions between element as basic substance, as simple substance and as combined simple substance. In addition to briefly tracing ...