| 1. | Each element is composed of identical atoms of a single kind .
每种元素由单一种类的相同原子组成。 |
| 2. | The simplest covalently bonded molecule is formed from two hydrogen atoms .
最简单的共价键分子由两个氢原子组成。 |
| 3. | It passes through the n atom and through the center of the equilateral triangle .
它通过N原子及三个H原子组成的等边三角形的中心。 |
| 4. | All matter ultimately consistsof atoms
一切物质从根本上说都是由原子组成的 |
| 5. | All matters are made up of tiny units called atoms
世上所有物质都是由细小的原子组成。 |
| 6. | All matters are made up of tiny units called atoms
世上所有物质都是由细小的原子组成。 |
| 7. | It has been found that all kinds of matter consist of atoms
人们已经发现,各种物质由原子组成。 |
| 8. | All bodies consist of molecules and these of atoms
一切物体都由分子组成，分子又是由原子组成。 |
| 9. | What do you call 60 atoms of pure carbon
由60个碳原子组成的 |
| 10. | Having a ring composed exclusively of carbon atoms , as benzene
碳环的有一个仅由碳原子组成的环的，如苯 |
