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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.
chemical
This reaction occurs through a chemical process.
petrochemistry
He is an expert in petrochemistry.
storeroom; space used for storage
I found an old box in the storeroom.
(archaic, possibly obsolete) a rope or cord made from hemp or ramie fibers
This hemp product is something that ancient people used.
(rare) the real thing; genuine article
This is not just a replica, it's the real thing.
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