chemicals
chemicals — 名詞
- chemicalssingular
- chemicalsesplural
1. substances that are made or used when atoms or molecules join together or break
化學物質
化學反應產生的物質
substances that are made or used when atoms or molecules join together or break apart — for example, elements such as oxygen, or compounds such as salt and water
The factory was fined for dumping harmful chemicals into the river.
那家工廠因為將有害化學物質倒入河中而被罰款。
collocation: harmful / toxic chemicals
Many household cleaning products contain chemicals that can irritate the skin.
許多家用清潔產品含有會刺激皮膚的化學物質。
collocation: contain chemicals
Scientists at the university lab are testing new chemicals to develop a safer pesticide.
大學實驗室的科學家正在測試新的化學物質，以開發更安全的農藥。
Exposure to certain industrial chemicals over many years can cause serious health problems.
長期接觸某些工業化學物質可能會導致嚴重的健康問題。
The water sample was sent to the lab to check for dangerous chemicals.
水樣本被送到實驗室檢查是否含有危險化學物質。
- substances
a broader term that covers solids, liquids, and gases, not only those produced by chemical processes
- compounds
a more specific term for chemicals made of two or more elements bonded together
- agents
used for chemicals that produce a specific effect, often in technical or medical contexts
用法筆記
The plural noun 'chemicals' is the most common form when referring to chemical substances in general or as a group. The singular 'a chemical' refers to one specific substance (e.g., 'Benzene is a chemical used in plastics'). Do not use 'chemicals' as slang for illegal drugs — that meaning is informal and not standard in academic or professional English.
常見錯誤
chemicals — 形容詞
- chemicalspositive
- more chemicalscomparative
- most chemicalssuperlative
1. involving or produced by chemistry — describes processes, reactions, substances,
化學的
與化學或化學物質有關的
involving or produced by chemistry — describes processes, reactions, substances, or products that relate to how atoms and molecules interact with one another
A chemical reaction occurs when two or more substances combine to form something new.
當兩種或以上的物質結合形成新物質時，就會發生化學反應。
collocation: chemical reaction
The factory installed a new system to treat its chemical waste before releasing it.
工廠安裝了一套新系統，在排放前先處理化學廢料。
collocation: chemical waste
The team carried out a detailed chemical analysis of the soil samples.
團隊對土壤樣本進行了詳細的化學分析。
All workers in the plant must wear protective clothing when handling chemical products.
工廠內的所有工人在處理化學產品時都必須穿戴防護衣物。
The chemical composition of the mineral was first studied in the early twentieth century.
這種礦物的化學成分最早是在二十世紀初被研究的。
- chemistry-related
less common alternative, used to describe industry or study fields
- synthetic
narrower meaning — refers specifically to chemicals made artificially, not natural ones
- natural
describes substances occurring without human chemical processing, though natural substances also have a chemical makeup
文法句型
chemical + noun
用法筆記
This is a relational adjective — it links a noun to the field of chemistry or to chemical substances. It is almost always used before a noun (attributive position), as in 'chemical reaction' or 'chemical plant'. It does NOT describe a person's emotional state or personality (that would be 'chemistry' as in 'they had good chemistry').