chem
chem — noun
1. an informal shortened form of the word 'chemistry' — the science that studies wh
an informal shortened form of the word 'chemistry' — the science that studies what substances are made of and how they change when they mix or react with each other.
Hiro signed up for chem this semester because he wants to become a pharmacist.
informal abbreviation for the school subject
Romi spent the afternoon in the chem lab, mixing solutions for an experiment.
chem lab — common collocation for school laboratory
The chem exam next week covers organic compounds and chemical bonds.
Faisal asked his teacher for extra help with chem after class.
Ingrid's favorite subject at school is chem because she loves doing experiments.
- chemistry
the full, formal term; use in formal writing
文法句型
used as an informal short form of 'chemistry'
用法筆記
Used mainly in informal spoken and written contexts. In formal academic writing (e.g. research papers, official transcripts), the full word 'chemistry' is preferred.
常見錯誤
chem — adjective
- chempositive
- chemmercomparative
- chemmestsuperlative
1. an informal abbreviation of the word 'chemical', used before nouns to show a con
an informal abbreviation of the word 'chemical', used before nouns to show a connection to chemistry — for instance, a 'chem plant' where industrial chemicals are made.
The chem plant near the river was inspected for safety violations last month.
chem plant — abbreviation before a noun of place
Brian works as an engineer at a large chem company in Houston.
The chem supply store on Main Street sells everything from beakers to safety goggles.
Talia's father is a chem researcher who develops new materials for batteries.
- chemical
the full adjective form; preferred in formal registers
文法句型
used before nouns as an informal abbreviation of 'chemical'
用法筆記
Common in workplace and trade contexts (chemical industry, laboratories). In formal writing, use the full adjective 'chemical'.
chem — abbreviation
1. a written abbreviation used in notes, lists, labels, or timetables to stand for
a written abbreviation used in notes, lists, labels, or timetables to stand for the words 'chemical', 'chemist', or 'chemistry'.
The timetable read 'Chem 101' as the course code for introductory chemistry.
course code format — 'Chem + number'
A small label on the storage cabinet said 'Chem — handle with care.'
abbreviation on safety labels
Mert added 'Chem' to his shopping list next to the cleaning supplies he needed.
The textbook cover had 'Chem. Dept.' printed at the bottom.
文法句型
used in notes, labels, timetables, and lists as a written abbreviation
用法筆記
Common in British English in educational contexts, such as on exam papers, course timetables, or bottle labels. A full stop (period) may follow the abbreviation: 'Chem.'.