Engineering English
Chemical Reaction
Chemical Engineering · Last updated: July 30, 2026 · How this entry was written
Definition: A process in which one or more substances are transformed into different substances through the breaking and forming of chemical bonds. It is accompanied by an energy change and a measurable change in composition.
Example in context
“The engineers monitored the chemical reaction inside the pilot plant vessel to confirm that the desired product formed at the expected rate.”
“Mühendisler, istenen ürünün beklenen hızda oluştuğunu doğrulamak için pilot tesis kabındaki kimyasal reaksiyonu izlediler.”
Where engineers use it
Every process design begins with the chemical reaction that converts raw materials into products. Engineers use it to write mass balances, size reactors, estimate heat duty, and choose safe operating temperatures and pressures.
Practice: can you use “Chemical Reaction” at work?
A trainee sees bubbling and a temperature rise in a laboratory flask and asks whether mixing alone caused it. Explain what defines a chemical reaction and what evidence confirms one.
Show a model answer
“The chemical reaction converts the feed into the desired product.”
“Chemical Reaction” in 21 languages
| English | Chemical Reaction |
|---|---|
| Turkish | Kimyasal Reaksiyon |
| French | Réaction chimique |
| German | Chemische Reaktion |
| Spanish | Reacción química |
| Chinese | 化学反应 |
| Arabic | تفاعل كيميائي |
| Portuguese | Reação química |
| Russian | Химическая реакция |
| Japanese | 化学反応 |
| Italian | Reazione chimica |
| Vietnamese | Phản ứng hóa học |
| Hindi | रासायनिक अभिक्रिया |
| Thai | ปฏิกิริยาเคมี |
| Indonesian | Reaksi kimia |
| Korean | 화학 반응 |
| Bengali | রাসায়নিক বিক্রিয়া |
| Dutch | Chemische reactie |
| Swedish | Kemisk reaktion |
| Finnish | Kemiallinen reaktio |
| Ukrainian | Хімічна реакція |
Frequently asked questions
What does Chemical Reaction mean in engineering?
A process in which one or more substances are transformed into different substances through the breaking and forming of chemical bonds. It is accompanied by an energy change and a measurable change in composition. In Chemical Engineering, the term carries a usage-frequency rating of 10/10 in the Engineering English library.
How do you pronounce Chemical Reaction?
Chemical Reaction is pronounced /ˈkemɪkəl riˈækʃən/ (IPA). The Engineering English app plays audio for the term and checks your pronunciation with speech recognition.
How is Chemical Reaction used in a sentence?
Example from an engineering context: “The engineers monitored the chemical reaction inside the pilot plant vessel to confirm that the desired product formed at the expected rate.”
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