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chem·is·try /ˈkemistrē/, noun chem·is·try /ˈkemistrē/, noun A science that deals with the composition, structure, and properties of substances and the transformations that they undergo chem·is·try /ˈkemistrē/, noun A science that deals with: chem·is·try /ˈkemistrē/, noun A science that deals with: *what stuff is made of; chem·is·try /ˈkemistrē/, noun A science that deals with: *what stuff is made of; *how it’s held together; chem·is·try /ˈkemistrē/, noun A science that deals with: *what stuff is made of; *how it’s held together; *how it behaves; chem·is·try /ˈkemistrē/, noun A science that deals with: *what stuff is made of; *how it’s held together; *how it behaves; *how it can change Solids Liquids Gasses Liquid Vapor Uncooked Cooked Uncooked Cooked Olfactory Bulb Tongue