The water molecule is___two hydrogen atoms and one oxygen atom.水分子由二个氢原子和一个氧原子构成。(p.19Chemical Structure第3-4行) ▲ make up of常用被动式,意为“由……所组成”。如:①The train was made up of 15 coaches.这列火车有15节车厢。②All living matter is made up of cells...
13. The water molecule is___two hydrogen atoms and one oxygen atom. 水分子由二个氢原子和一个氧原子构成。(p.19 Chemical Structure 第3—4行) ▲ make up of常用被动式,意为“由……所组成”。如:1 The train was made up of 15 coaches. 这列火车有15节车厢。2 All living matter is made ...
The antonym of “atom” is ___. A. molecule B. particle C. compound D. element 相关知识点: 试题来源: 解析 C。“atom”意为“原子”,“compound”意为“化合物”,与“atom”相对。“molecule”分子;“particle”粒子;“element”元素,都不是“atom”的反义词。反馈...
The atom is the basic unit of matter. “atom” means ___. A. particle B. molecule C. element D. substance 相关知识点: 试题来源: 解析 A。“atom”是原子,是物质的基本粒子,与“particle”意思相符。“molecule”是分子;“element”是元素;“substance”是物质。反馈...
49. A molecule of water is made up of two atoms of hydrogen and one atom of oxygen.(改为同义句) A molecule of water two atoms of hydrogen and one atom of oxygen 相关知识点: 试题来源: 解析 【答案】consistsof【核心短语/词汇】bemadeupof 由...组成【翻译】一个水分子是由两个氢原子和...
题目The hybridization of the nitrogen atom in the molecule NF3 is A. sp2 B. spd C. sp3 D. sp3d 相关知识点: 试题来源: 解析 问的应该是NF3的杂化吧?选C sp3,将1个2s轨道和3个2p轨道杂化后与F成键,并且留有一对孤对电子.反馈 收藏 ...
百度试题 结果1 题目The water molecule is made up of two___ (氢)atoms and one___ (氧)atom.相关知识点: 试题来源: 解析 marched 反馈 收藏
Triethylamine [(CH3CH2)3N] is a molecule in which the nitrogen atom is ___ hybridized and the CNC bond angle is ___. () A sp2; >109.5° B sp2; C sp3; >109.5° D sp3; E sp; 109.5° 相关知识点: 试题来源: 解析 D 反馈 收藏 ...
The atomic weight of an atom, or the molecular weight of a molecule, is its mass relative to that ofa___ atom. This is essentially equal to the number of protons plus neutrons that the atom or molecule contains. A oxygen B hydrogen C helium D carbon 相关知识点: 试题来源: 解析 B ...
aWater is a very simple molecule (two hydrogen atoms combined with one oxygen atom), but that simple combination allows the emergence of exceptional properties that have made water the most important solvent on earth and an essential support to the development of life.[translate]...