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the scientific study of the composition, structure, and properties of matter and the changes that matter undergoes
a substance that cannot be seperated or broken down into simpler substances by chemical means
the smallest unit of a substance that keeps all of the physical and chemical properties of that substance
a sample of matter, either a single element or a single compound, that has definite chemical and physical properties
the ability of a substance to react in the presence of oxygen and burn when exposed to a flame
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