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2 or more types of atoms combined through a chemical reaction creates a new substance, cannot be seperated by physical means
2 or more substances that are physically combined no new substances, can be seperated by physical means
a solution in which the amount of solute is less than the max amount the solvent can hold
a solution in which the amount of solute is much less than the max amount the solvent can hold ex.-tea
a characteristic that is used to identify a substance every substance has a unique combination of properties
any characteristic of a material that can be observed without changing the composition of the substance ex.-color, shape, size, density, melting point, boiling point
a property of a substance that indicates whether can undergo a certain chemical change
a change that alters the chemical composition of a substance new substance found ex.-flammable or combustible, bubbles, changes color, corrosive, rapid production of energy
Law of Conservation of Mass
the mass of all substances before a chemical change, is equal to the mass after the chemical change
a mixture in which different materials are blended evenly so that the mixture is the same throughout; also called a solution
a heterogeneous mixture containing tiny particles that never settle out; for example, milk and gelatin
a heterogeneous mixture containing a liquid in which larger particles eventually settle out
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