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science chapter 2

describing matter

QuestionAnswer
matter anything that has mass and occupies space
chemistry the study of the properties of matter and how matter changes
substance a single kind of matter that is pure and has a specific set of properties
physical property a characteristic of pure substance that can be observed without changing it into another substance
chemical property a characteristic of a pure substance that describes its ability to change into a different substance
element a pure substance that cannot be broken down into other substance by chemical or physical means
atom the basic particle from which all elements are made
chemical bond the force that holds atoms together
molecules a neutral particle made of two or more atoms joined by covalent bonds
compound a pure substance made of two or more elements chemically combined
chemical formula a combination of symbols that represents the elements in a compound and their proportions
mixture two or more substances that are mixed together, but does not chemically combined
heterogeneous mixture a mixture in which pure substances are unevenly distributed throughout the mixture
homogeneous mixture a mixture in which substance are evenly distributed throughout the mixture
solution a well mixed mixture containing a solvent and at least one solute that has the same properties throughout
Created by: 088103