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(chemistry) chemical element
Oxygen, which is one of the chemical elements, is necessary for us to breathe.
(chemistry) chemical equilibrium
Understanding chemical equilibrium is very important in understanding chemical reactions.
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.
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