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something that has mass and takes up space


the study of the properties of matter and how it changes


a single kind of matter that is pure and has specific properties

physical property

a characteristic of a pure substance that can be watched without changing into another substance

chemical property

a characteristic of a pure substance that is able to change into another substance


a pure substance that can't be broken down any farther physically or chemically


a particle that all elements are made up of

chemical bond

a force that holds two atoms together


a particle made of two or more atoms bonded together


a pure substance made of two or more elements chemically combined

chemical formula

a formula that gives the elements in a compound and the ratio of atoms


when two or more substances are mixed together, but aren't chemically combined

heterogeneous mixture

a mixture where substances are distributed unevenly throughout a mixture

homogeneous mixture

a mixture where substances are distributed evenly throughout a mixture


when something is dissolved in another

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