A molecule is defined as the smallest unit of a compound that contains the chemical properties of the compound. Molecules are made up of groups of atoms. Describing thestructure of an atom, an atom is also sub-divided into smaller units. Proton, electrons, and neutrons are sub-particles of...
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。
The mean kinetic energy of a molecule, however, has a definite value, which is easily expressed in terms of the quantities which enter into the expression for the distribution of velocities. The most important result of this investigation is that when several kinds of molecules are in motion a...
A. concepts: element, Atom, molecule, compound, isotopes, periodic law of elements; 翻译结果3复制译文编辑译文朗读译文返回顶部 A. concepts: element, Atom, molecule, compound, isotopes, periodic law of elements; 翻译结果4复制译文编辑译文朗读译文返回顶部 ...
B A molecule of methane, CH4C A molecule of nitrogen, N2D An ion of sodium, Na+Q25. Which of the following statements about 2512Mg is true?(A) It has the same number of neutrons and protons.(B) It can be oxidized to form an Mg2+...
Suppose the molecule contains A nuclei which, to simplify the discussion, are taken to be distinguishable, and that one nuclear coordinate is fixed in the process of elimination of the centre-of-mass motion. There are then (3A − 3) coordinates to be determined, whereas there are A(A ...
and created his atomic theory, which became the basic concept of the molecule. this theory proposed that atoms are indivisible and indestructible particles, and that compounds are formed by the combination of atoms in specific ratios. dalton's atomic theory laid the foundation for understanding the...
atom系一种element入面最细而且不能分割的部份,而Ion是由于atom/molecule得到或者失去electron时而令atom/molecule中的正负电荷失衡,得到净正或负电荷,咁ion都系element入面最细而且不能分割的部份?polyatomic ion系多过一个 atom 的 ion,咁他算不算系compound?
Pattern matching of stereochemistry with the described representation is straight forward. Given the atom–atom mapping from a query structure to a target molecule, the focus and carriers of the query stereochemistry are mapped to the target. Using the permutation parity of this mapping the configurat...
Because early chemists did not know how many atoms were in a molecule, their chemical notation systems were in a state of chaos by the mid-19th century. Berzelius and his followers, for example, used the general formula MO for the chief metallic oxides, while others assigned the formula used...