B1adjective2K

Chemical

UK /["/ˈkemɪkl/"]/US /["/ˈkemɪkl/"]/

Definition

connected with chemistry

In simple words: A substance made of elements, used in science.

Examples

  • changes in the **chemical composition** of the atmosphere
  • **chemical reactions/compounds**
  • chemical processes
  • a **chemical plant** *(= a factory producing chemicals)*
  • **chemical agents ***(= substances)*
  • the **chemical industry**
  • a **chemical attack**
  • Chemical treatment with chlorine provides some protection against contamination.

Usage notes

Use 'chemical' in scientific contexts, like labs or research. Avoid in everyday conversation unless discussing related topics. It has a technical tone.

Grammar pattern

adjective + noun

Memory hint

Think of 'chem-i-cal' like 'chemistry' — they both relate to science!

Collocations

  • chemical reaction
  • chemical compound
  • chemical engineer
  • chemical formula

Synonyms

  • substance
  • compound
  • element
  • material

Antonyms

  • natural
  • organic

Common mistakes

  • Confused with 'chemistry' as they both relate to science.
  • Using 'chemical' to describe something non-scientific.
  • Mispronouncing it or stressing the wrong syllable.