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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.
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) alum
In chemistry class, we learned about the chemical reactions of alum.
to study / to learn
I like to study new languages.
teach; to instruct; give a lesson
I will teach mathematics to new students tomorrow.
instruction; teaching; school; lesson, class
I attended a math class today.
stoichiometry
Stoichiometry is a method for calculating the amount of substances in a chemical reaction.
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