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chemical
This reaction occurs through a chemical process.
a chemist
He is an excellent chemist who made many discoveries.
petrochemistry
He is an expert in petrochemistry.
chemical equation
It's difficult to decipher this chemical equation.
chemical analysis
He is an expert in chemical analysis.
chemical fertilizer
We are growing vegetables without using chemical fertilizers.
(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.
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