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petrochemistry
He is an expert in petrochemistry.
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.
(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.
carbon monoxide
Carbon monoxide is a colorless, odorless gas, and it is dangerous to inhale.
(inorganic chemistry) carbon dioxide
Carbon dioxide is one of the main causes of global warming.
anarchy (absence of any form of political authority or government)
This country has fallen into anarchy.
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