electron

electron — noun

1. a very tiny particle that is found inside every atom and is negatively charged.

1.名詞B1
釋義

a very tiny particle that is found inside every atom and is negatively charged. It moves around the centre of the atom.

例句

Hyun's science teacher showed how electrons circle the centre of every atom.

electrons circle the centre of an atom

When Tuan switched on the lamp, electrons began flowing through the copper wire.

electrons + flow / flowing through [conductor]

同義詞
  • particle

    much broader term; electron is one specific type of subatomic particle

  • lepton

    the scientific category of particles that includes electrons (advanced physics context only)

反義詞
  • proton

    a particle in the atom's centre with a positive electric charge

  • positron

    the antimatter counterpart of an electron, with the same mass but a positive charge

文法句型

electron + verb (orbit, flow, carry)

the + electron + noun (microscope, beam, shell)

用法筆記

Countable noun. Often appears in compound nouns such as electron microscope, electron beam, and electron shell. Learners encounter the word in school science lessons and popular science articles.

常見錯誤

❌An electron is a negative charge particle.
✅An electron is a particle with a negative charge.
💡'Charge' is a property of the particle, not a modifier of 'particle'.
❌Electron has a negative charge.
✅An electron has a negative charge.' or 'Electrons have a negative charge.
💡As a countable noun, 'electron' needs a determiner or must be pluralised.