inert gas

IPA/ɪˌnɜːt ˈɡæs/
IPA/ɪˌnɜːrt ˈɡæs/

inert gas — noun

1. one of a set of gas elements whose atoms are very stable and do not easily form

1.名詞B2
釋義

one of a set of gas elements whose atoms are very stable and do not easily form chemical bonds with other atoms; the group includes helium, neon, argon, krypton, xenon, and radon, and these gases are often used in lighting, welding, and laboratory work to create a non‑reactive environment.

例句

Helium is the lightest inert gas and keeps balloons floating in the air.

helium as a lightest inert gas — everyday use

Welders use an inert gas such as argon to stop the hot metal from rusting.

inert gas as shielding agent during welding

同義詞
  • noble gas

    the modern, more common term in chemistry; 'noble' emphasises that these gases rarely form bonds, like noble metals

  • rare gas

    an older term referring to their low abundance in the atmosphere; less common today

反義詞
  • reactive gas

    a gas that readily forms chemical bonds, such as oxygen or chlorine

文法句型

inert gas + such as + [example]

an inert gas + verb

用法筆記

Often used in the plural form (inert gases) when referring to the whole group of elements. In everyday conversation, people usually name a specific gas (e.g., helium, neon) rather than using the category name.

常見錯誤

❌Oxygen is an inert gas because it is in the air.
✅Helium is an inert gas because it does not react with other chemicals.
💡oxygen is highly reactive and is not an inert gas.
❌Inert gases are dangerous because they explode easily.
✅Inert gases are safe to handle because they do not catch fire or react.
💡inert gases are non-flammable and stable.