What is the mass of 1 mol of atoms for an element? Where is most of the mass in an atom? What is the approximate atomic mass of an atom with 16 neutrons, 15 protons, and 15 electrons? Is an atom smaller than a molecule?
A. an atom B. a molecule C. a cell D. an organism 相关知识点: 试题来源: 解析 A。解析:物质的最小单位是原子。选项 B 分子由原子组成;选项 C 细胞是生物体的基本单位;选项 D 生物体是由细胞组成的。相关科普知识点为物质的结构。反馈 收藏 ...
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...
What is an atom in a molecule? J Phys Chem A The derivation of the Hirshfeld atoms in molecules from information theory is clarified. The importance for chemistry of the concept of atoms in molecules (AIM) is stressed, and it is argued that this concept, while highly useful, consti... ...
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] ...
1. The total energy of an atom or molecule is due to many energetic contributions, both kinetic and potential. Consider a beryllium atom as an example. My drawing below identifies the motions and interactions and how many of each - that con...
Molecule C. Cell D. Organ 相关知识点: 试题来源: 解析 A。解析:原子(Atom)是物质的最小单位。分子(Molecule)由原子组成;细胞(Cell)是生物体的基本结构和功能单位;器官(Organ)是由细胞和组织构成的。从语法上这是关于物质基本单位的特殊疑问句,选项为不同物质或生物结构名称。
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...
Answer and Explanation: A. A molecule is composed of multiple atoms. It is not the smallest unit of matter. B. An atom is the smallest unit of matter. This is the correct...Become a member and unlock all Study Answers Start today. Try it now Create an account A...
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