Science Chapter 9
About this set
Created by:
ebushey on February 12, 2009
Subjects:
elements, compounds, mixtures, types of mixtures, solutions, Solubility Curve, Law of Conservation of Mass, physical and chemical changes
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20 terms
Terms | Definitions |
|---|---|
 element | one type of atom |
| compound | 2 or more types of atoms combined through a chemical reaction creates a new substance, cannot be seperated by physical means |
| mixtures | 2 or more substances that are physically combined no new substances, can be seperated by physical means |
| unsaturated | a solution that is capable of dissolving more solute more solute can be added |
| saturated | a solute with the max amount of solute |
| supersaturated | a solution that contains more than max amount of solute that it can hold unstable |
| concentrated | a solution in which the amount of solute is less than the max amount the solvent can hold |
| dilute | a solution in which the amount of solute is much less than the max amount the solvent can hold ex.-tea |
| property | a characteristic that is used to identify a substance every substance has a unique combination of properties |
| physical property | 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 |
| density | the ratio of mass and its volume |
| chemical properties | a property of a substance that indicates whether can undergo a certain chemical change |
| 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 |
| homogeneous mixture | a mixture in which different materials are blended evenly so that the mixture is the same throughout; also called a solution |
| heterogeneous mixture | a mixture in which different parts can be easily distinguished |
| colloid | a heterogeneous mixture containing tiny particles that never settle out; for example, milk and gelatin |
| suspension | a heterogeneous mixture containing a liquid in which larger particles eventually settle out |
| solvent | the substance that dissolves a solute |
| solute | the substance being dissolved in a solvent |
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