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DCE Chem Unit 9
DCE Chemistry Unit 9 Vocabulary
| Term | Definition |
|---|---|
| solution | a homogeneous mixture that will not separate |
| suspension | a mixture in which some of the particles settle out slowly upon standing |
| solute | the dissolved particles in a solution; the part of the solution smaller in amount |
| solvent | the dissolving medium in a solution; the part of the solution larger in amount |
| mixture | a blend of two or more substances that are not chemically combined |
| alloy | a mixture of two or more elements, at least one of which is a metal |
| emulsion | a nonpolar substance held in suspension in a polar substance by a molecule that has both a polar and nonpolar end |
| electrolyte | a solution that will conduct electricity |
| non-electrolyte | a substance that will not conduct electricity when put in solution because it does not form ions |
| surfactant | a substance that interferes with the hydrogen bonding between water molecules and reduces surface tension |
| homogeneous mixture | a mixture that is uniform in composition, mixed evenly throughout |
| heterogeneous mixture | a mixture that is not uniform in composition, not mixed evenly throughout |
| miscible | two liquids that dissolve in each other in all proportions |
| immiscible | two liquids that do not dissolve in each other |
| solubility | the amount of substance that will dissolve in a given amount of solute at a specific temperature and pressure |
| insoluble | a substance that will not dissolve in a solute is said to be _________ |
| saponifiation | the process of making soap |
| saturated solution | a solution in which the maximum amount of solute that can dissolve has been added to the solute |
| unsaturated solution | a solution in which less than the maximum amount of solute that can dissolve has been added to the solute |
| supersaturated solution | a temporary condition in which a solution contains more solute than the standard amount at a given temperature |
| colligative properties | properties that depend only upon the number of solute particles present |
| freezing point depresssion | the difference in temperature between the freezing point of the pure solvent and the freezing point of the solution (the solution will be lower) |
| colloid | a heterogeneous mixture that will not settle out when you stop stirring it |
| molarity | a measurement of the concentration of a solution (moles of solute per liter of solution) |
| parts per million | a way of expressing very dilute concentrations of substance; one part solute in 1 million parts of the solution |
| molality | a measurement of the concentration of a solution (moles of solute per kilogram of solvent) |
| percent by weight | a measurement of the concentration of a component in a mixture; the mass of a component divided by the total mass of the mixture, multiplied by 100%. |
| boiling point elevation | the difference in temperature between the boiling point of the pure solvent and the boiling point of the solution (the solution will be higher) |
| concentration | a measure of the amount of solute that is dissolved in a given quantity of solvent |
| aqueous solution | a solution made by dissolving a solute in water |
| soluble | a substance that will dissolve in a solute is said to be _________ |
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dcechem
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