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chemical reaction, chemical change
In this experiment, you can observe a chemical reaction.
undergo a chemical change
This substance undergoes a chemical change when heat is applied.
chemical weapon
The use of chemical weapons is prohibited by international law.
biological chemistry
I am majoring in biochemistry at university.
chemical engineering
My major is chemical engineering.
inorganic chemistry
I am majoring in inorganic chemistry at university.
analytical chemistry
Analytical chemistry is a science that reveals the composition and structure of substances.
physical chemistry
I am majoring in physical chemistry at university.
organic chemistry
I love organic chemistry classes.
(chemistry) a chemical reaction
This chemical reaction is very dangerous.
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