chemical
gb/kˈɛmɪkəl/ us/kˈɛmɪkəl/
B1
อังกฤษ
~ 1900
ความหมาย
0 ความหมาย
คำนาม
B1
entity
1
A substance with a specific chemical makeup
A substance made from certain elements, often used in science or industry.
รูปแบบการใช้:
[a/an/the] chemical
ข้อผิดพลาดที่พบบ่อย:
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.'
คำพ้องความหมาย
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.)
คำตรงข้าม
biological material (Refers to naturally occurring organic matter rather than synthetic or processed chemicals.)
คำที่ใช้ร่วมกัน
toxic chemical
|harmful chemical
|chemical reaction
|chemical plant
|chemical formula
หัวข้อ
science
|industry
|environment
|core_vocabulary
ตัวอย่าง
- 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.
ตัวอย่างสำหรับผู้เรียน
- 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.
รูปแบบการใช้:
[chemical] [noun]
ข้อผิดพลาดที่พบบ่อย:
Learners may confuse 'chemical' (adjective) with 'chemist' (a person who works with chemicals).
คำพ้องความหมาย
chemistry-related (Less common; explicitly links to the field of chemistry.)
คำตรงข้าม
physical (In science, relates to physical properties rather than chemical ones.)
คำที่ใช้ร่วมกัน
chemical reaction
|chemical process
|chemical composition
|chemical warfare
หัวข้อ
science
|industry
|core_vocabulary
ตัวอย่าง
- 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.
ตัวอย่างสำหรับผู้เรียน
- 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.
ไวยากรณ์
รูปคำในพจนานุกรม
chemical
IPA
GB/kˈɛmɪkəl/
US/kˈɛmɪkəl/
พยางค์และการเน้นเสียง
chem - ic - al (3 พยางค์)
Stress on 1st syllable (chem)
รูปคำ
Adjective
- Base: chemical
Noun
- Base: chemical
- Plural: chemicals
กลุ่มคำที่เกี่ยวข้อง
Forms
chemicals
noun
Related words
biochemistry
noun C1
biochemical
adjective
Advanced or less common
petrochemical
noun
วลีและสำนวน
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.
ตัวอย่าง
- 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.
ตัวอย่าง
- 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.
ตัวอย่าง
- 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.