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......
A. Atom B. 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。反馈...
What is the smallest unit of matter? A. Atom. B. Molecule. C. Electron. D. Proton. 相关知识点: 试题来源: 解析 A。解析:原子是物质的最小单位。选项 B,分子不是最小单位;选项 C,电子是原子的一部分;选项 D,质子也是原子的一部分。
题目What is the smallest unit of life? A. The atom B. The molecule C. The cell D. The organ 相关知识点: 试题来源: 解析 C。解析:细胞是生命的最小单位。原子和分子不是生命单位,A、B 错误;器官由细胞组成,不是最小单位,D 错误。
A molecule is formed when two or more atoms bond together. If the molecule consists of different types of atoms bonded together, it is called a compound. An example of a compound is water, which consists of two hydrogen atoms and one oxygen atom. A mixture is different from a compound. ...
The difference between an atom and an ion is that an atom has a neutral charge, whereas an ion is electrically charged, positively or negatively. An... Learn more about this topic: Using Atoms and Ions to Determine Molecular Formulas
What is formed when an atom loses or gains an electron? Which force binds atoms together to form molecules? How is a new substance produced when a molecule is formed? Is a new substance produced because a chemical bond or covalent bond has formed, which is what makes it a new substance?
AnElectric Dipoleis formed from a substance that possesses two equal electric charges of opposite sign separated by a small distance. The best example of an electric dipole is an atom with one electron and one proton (Hydrogen). The proton acts as the source of positive charge, while the el...
What is Rubber? Is it an atom or a molecule? A certain element has its outermost electron in a 2s subshell. It has valence +1 because it has 1 more electrons than a certain noble gas. What element is it? Express your answer using its one- or two What can you conclude about gas mo...
Here's how to remember the difference. If you join two different chemical elements together, you can often make a completely new substance. Glue two atoms of hydrogen to an atom of oxygen and you'll make a single molecule of water. Water is a compound (because it's two different ...