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thermochemistry
Thermochemistry is a part of chemistry that deals with the reactions of heat and matter.
(chemistry) chemical element
Oxygen, which is one of the chemical elements, is necessary for us to breathe.
chemical analysis
He is an expert in chemical analysis.
chemical equation
It's difficult to decipher this chemical equation.
Understanding chemical equations is difficult.
chemical fertilizer
We are growing vegetables without using chemical fertilizers.
undergo a chemical change
This substance undergoes a chemical change when heat is applied.
chemical reaction, chemical change
In this experiment, you can observe a chemical reaction.
(chemistry) chemical equilibrium
Understanding chemical equilibrium is very important in understanding chemical reactions.
a chemist
He is an excellent chemist who made many discoveries.
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