| 单词 | atom |
| 释义 | atom (ætəm ) Word forms: atoms countable noun B2 An atom is the smallest amount of a substance that can take part in a chemical reaction. A methane molecule is composed of one carbon atom attached to four hydrogens. Synonyms: particle, bit, spot, trace Collocations: oxygen atom First it takes an oxygen atom away from an ozone molecule, then the sunlight tears away that atom, leaving the chlorine atom free to repeat the process. Times,Sunday Times But the tool they were using couldn't detect the difference between water and hydroxyl, a molecule that consists of one hydrogen atom and one oxygen atom. Retrieved from Wikipedia CC BY-SA 3.0 Consequently, mesomerism occurs, dislocating the negative charge between the alpha-carbon and the oxygen atom. Retrieved from Wikipedia CC BY-SA 3.0 For example, bases donating a lone pair from an oxygen atom are harder than bases donating through a nitrogen atom. Retrieved from Wikipedia CC BY-SA 3.0 A carbonyl group can be reduced to the alcohol or the oxygen atom can be removed altogether, a process called deoxygenation. Retrieved from Wikipedia CC BY-SA 3.0 We can manufacture antimatter, and split the atom down to fundamental particles. Times, Sunday Times (2010) What was true of splitting the atom is true of modifying the genes in a human embryo. Times, Sunday Times (2016) Want to know how to split the atom and make a bomb? Times, Sunday Times (2012) Whisper this but when it comes to splitting the atom, they are better than us. The Sun (2010) Translations: Chinese: 原子 Japanese: 原子 |
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