chemical
gb/kˈɛmɪkəl/ us/kˈɛmɪkəl/
B1
英語
~ 1900
語義
0件の語義
名詞
B1
entity
1
A substance with a specific chemical makeup
A substance made from certain elements, often used in science or industry.
用法パターン：
[a/an/the] chemical
よくある間違い：
Learners sometimes confuse 'chemical' (a noun) with 'chemistry' (the science). For example, saying 'This is a dangerous chemistry' instead of 'This is a dangerous chemical.'
類義語
compound (More technical; refers specifically to a substance formed from two or more elements chemically bonded.)
|
substance (A broader term that can refer to any kind of matter, not just those defined by chemistry.)
対義語
biological material (Refers to naturally occurring organic matter rather than synthetic or processed chemicals.)
コロケーション
toxic chemical
|harmful chemical
|chemical reaction
|chemical plant
|chemical formula
テーマ
science
|industry
|environment
|core_vocabulary
例文
- The factory was fined for releasing harmful chemicals into the river.
- Chlorine is a chemical used to disinfect water.
- Some cleaning products contain strong chemicals that can irritate your skin.
- Scientists discovered a new chemical that could help store energy more efficiently.
学習者向け例文
- Water is a chemical made of hydrogen and oxygen.
- This cleaner has a strong chemical in it.
- The lab tests the chemicals for safety.
- He studies different chemicals in the lab.
adjective
B1
property
2
Related to chemistry or chemicals
About chemistry or substances used in chemistry.
用法パターン：
[chemical] [noun]
よくある間違い：
Learners may confuse 'chemical' (adjective) with 'chemist' (a person who works with chemicals).
類義語
chemistry-related (Less common; explicitly links to the field of chemistry.)
対義語
physical (In science, relates to physical properties rather than chemical ones.)
コロケーション
chemical reaction
|chemical process
|chemical composition
|chemical warfare
テーマ
science
|industry
|core_vocabulary
例文
- Chemical reactions release energy in different forms.
- The company follows strict guidelines for chemical safety.
- We studied the chemical structure of the new material.
- Chemical weapons are banned under international law.
学習者向け例文
- We learned about chemical changes in school.
- Fire is caused by a chemical reaction.
- The drink changed color because of a chemical process.
- Chemical tests showed the water is safe.
文法
辞書形
chemical
IPA
GB/kˈɛmɪkəl/
US/kˈɛmɪkəl/
音節・強勢
chem - ic - al （3音節）
Stress on 1st syllable (chem)
活用形
Adjective
- Base: chemical
Noun
- Base: chemical
- Plural: chemicals
関連語
Forms
chemicals
noun
Related words
biochemistry
noun C1
biochemical
adjective
Advanced or less common
petrochemical
noun
表現
chemical reaction
1/kˈɛmɪkəl ɹiˈækʃən/
fixed phrase
technical
Process where substances change chemically
A process in which one or more substances change into new substances.
例文
- Combustion is a type of chemical reaction that releases heat and light.
- The rusting of iron is caused by a slow chemical reaction with oxygen.
chemical compound
1/kˈɛmɪkəl kˈɑmpaʊnd/
fixed phrase
technical
Substance of bonded elements
A substance made when two or more elements join together chemically.
例文
- Water is a chemical compound made of hydrogen and oxygen.
- Water is the most familiar chemical compound on Earth.
- Salt is a common chemical compound found in kitchens.
- The lab discovered a new chemical compound that can store energy efficiently.
- Each chemical compound has its own set of physical and chemical properties.
chemical warfare
1/kˈɛmɪkəl wˈɔɹfˌɛɹ/
fixed phrase
technical
Use of toxic chemicals in war
The use of poisonous chemicals as weapons during war.
例文
- Chemical warfare is prohibited under international law.
- Chemical warfare is banned by many international treaties.
- The army trained to protect soldiers from chemical warfare attacks.
- The army trained soldiers to protect themselves from chemical warfare.