chem
chem — noun
1. an informal short form of the word chemistry, used to mean the school subject th
an informal short form of the word chemistry, used to mean the school subject that studies what substances are made of and how different materials change or join together when mixed.
Ravi has a chem exam on Friday and needs to memorise the periodic table.
informal abbreviation in school context
Leila enjoyed chem more than biology because she loved mixing substances in the lab.
used as a subject name alongside other subjects
The school built a new chem lab with safety showers and fume hoods.
Tomás borrowed Aiko's chem notes after missing the class on acids and bases.
文法句型
the + noun + of + noun
possessive + noun
用法筆記
Avoid using the abbreviation 'chem' in formal academic essays or official science reports — always write 'chemistry' in those contexts.
常見錯誤
chem — adjective
1. an informal short form of the word chemical, describing things that are made by
an informal short form of the word chemical, describing things that are made by or relate to the science of chemistry.
The factory was fined for dumping chem waste into the river without proper treatment.
collocation: chem waste
Aiko put on protective goggles before starting the chem reaction demonstration.
collocation: chem reaction
Workers in protective suits cleaned up the chem spill near the highway within hours.
The chem plant outside town produces fertiliser and industrial cleaning agents.
文法句型
chem + noun
用法筆記
The adjective form 'chem' only appears before a noun (e.g. chem plant, chem waste). It is not used predicatively — you cannot say 'this reaction is chem'.