Basic Parts of the atom- Subatomic Particles Proton Positive charge Found in the nucleus Dictate the identity of the atom Neutron No charge Found in the nucleus Electron Orbits the nucleus Tiny compared to proton and neutron # equal to # of protons in neutral atom Parts of the atom Nucleus C...
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An atom is a basic structural unit of matter, the smallest particle of an element ___ into chemical combination. A. that can enter B. can it enter C. when entering it can D. that E. nters can 相关知识点: 试题来源: 解析 A 答案:A 分析:that引导定语从句,element为先行词。the smalles...
Certainly not. If you do the same thing with any element, you will reach an indivisible part that has the same properties of the element, like the single paper clip. This indivisible part is called an atom. The idea of the atom was first devised by Democritus in 530 BC. In 1808, an...
•constituenta.1.构成(全体)的,组成的theconstituentpartsofanatom原子的组成成分 •2.选举的;任命的 •3.有宪法制定(或修改)权的;有组阁权的aconstituentassembly立宪会议 •n.1.成分,组成的要素theconstituentsofcement水泥的成分 •2.选民,选举人 •3.委托人 •4.【语】成分,结构成分 •meridian...
材料科学基础名词解释(Basic terms of material science) Crystal: the crystal is a solid in which the inner particle is periodically repeated in three dimensions. Amorphous: an amorphous is a solid that consists of a molecule (or an atom or an ion) that does not have space and regular periodic...
1 The idea of the atom Atoms and elements: what's the difference? The parallel concepts of the element and the atom constitute the very foundations of chemical science. Sulfur the element Sulfur the atom An element is an actual physical substance that cannot be broken down into a simpler for...
Atoms are very small. The average size of an atom is about 100 picometers or one ten-billionth of a meter. Almost all of the mass of an atom is in its nucleus; almost all of the volume of an atom is occupied by electrons. The number of protons(also known as itsatomic number) dete...
来自 Semantic Scholar 喜欢 0 阅读量: 8 作者: L. Shimoni,J. P. Glusker 展开 摘要: Publication » Fluorine atom in an H-bond system, can we draw basic rules about its behavior?. 展开 DOI: 10.1107/S0108767378094738 年份: 1993 ...
Molecular nanotechnology is an engineering discipline in which the goal is to build devices and structures that have every atom in the proper place. By means of this general purpose material-processing technology it will be possible to build almost any rigid, covalently bonded structure. Identical ...