Term
| What does NOT increase the rate of dissolving a solid in water? |
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Definition
| using larger pieces of solid |
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Term
| Increases the surface area between a solute and a solvent does what? |
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Definition
| increases the rate of dissolution |
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Term
| What decreases the average speed of solvent molecules? |
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Definition
| decreasing the temperature |
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Term
| Why does stirring increase the rate of dissalution? |
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Definition
| it brings fresh solvent into contact with the solute |
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Term
| What dissolves most rapidly? |
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Definition
| powdered sugar in hot water |
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Term
| What dissolves most slowly? |
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Definition
| large salt crystals in unsitrred water |
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Term
| What does raising the collision rate between a solute and a solvent do? |
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Definition
| it increases the rate of dissalution |
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Term
| What does raising solvent temperatures cause a solute-solvent collision to become? |
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Definition
| more frequent and more energetic |
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Term
| If a solution is not agitated while it is being made, the dissolved solute tends to do what? |
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Definition
| build up in the solvent near the solute |
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Term
| What is at equilibrium when undissolved solute is visible? |
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Definition
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Term
| If the amount of solute is present in a solution at a given temperature is less than the maximum amount that can be dissolved at that temperature, the solute is said to be what? |
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Definition
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Term
| If the amount of dissolved solute in a solution at a given temperature is greater than the amount that can permanetly remain in solution at that temperature, that solution is said to be what? |
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Definition
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Term
| What happens when a solution is at equilibrium? |
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Definition
| the rate of dissolution and the rate of crystalization is equal |
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Term
| The solubility of a substance at a given temperature can be expressed as what? |
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Definition
| the amount of solute per amount of solvent |
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Term
| The solubility of a solute depends on what? |
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Definition
| the nature of the solute and the temperature of the solvent |
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Term
| What is likely to produce crystals if disturbed? |
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Definition
| a supersaturated solution |
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Term
| What is the rate of dissolution? |
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Definition
| directly related to solubility |
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Term
| In the expression like dissolves like, the word like refers to similarity in molecular what? |
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Definition
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Term
| The rule like dissolves like is used to predict what? |
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Definition
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Term
| What is an example of a polar solvent? |
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Definition
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Term
| What is an example of a nonpolar solvent? |
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Definition
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Term
| A substance that is NOT soluble in a polar solvent is what? |
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Definition
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Term
| What is soluble in water? |
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Definition
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Term
| Sugar is soluble in what because sugar molecules what? |
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Definition
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Term
| What are two immiscible substances? |
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Definition
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Term
| What is a solvent for both polar an nonpolar solutes? |
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Definition
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Term
| In solvation, which particle interact? |
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Definition
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Term
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Definition
| forming solute-solute attraction |
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Term
| When the energy releases by forming solvent-solute attracction is greater than the energy absorbed by overcoming solute-solute and solvent-solvent attraction, the dissolving process what? |
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Definition
| hasa negative heat of solution |
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