Chemistry 1 Unit 5
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25 terms
Terms | Definitions |
|---|---|
 percent composition | the percent by mass of each element in a compound |
| empirical formula | a chemical formula showing the ratio of elements in a compound rather than the total number of atoms |
| solution | a homogeneous mixture of two or more substances |
| solute | the dissolved substance in a solution |
| solvent | a liquid substance capable of dissolving other substances |
| dissolving | the process of a material becoming incorporated uniformly into another, or of two materials mixing together evenly |
| ion-dipole bonding | Attraction between an ion and a dipolar molecule |
| homogeneous mixture | a mixture in which substances are evenly distributed throughout the mixture |
| heterogeneous mixture | a mixture in which different materials can be distinguished easily |
| saturated | being the most concentrated solution possible at a given temperature |
| unsaturated | not saturated |
| concentrated | of or relating to a solution whose dilution has been reduced |
| dilute | lessen the strength or flavor of a solution or mixture |
| soluble | (of a substance) capable of being dissolved in some solvent (usually water) |
| insoluble | (of a substance) not easily dissolved |
| electrical conductivity | how well a substance allows electricity to flow through it. |
| hydration energy | energy change accompanying the hydration of a mole of gaseous ions |
| lattice energy | the energy released when one mole of an ionic crystalline compound is formed from gaseous ions |
| entropy | a measure of the disorder of a system |
| dynamic equilibrium | result of diffusion where there is continuous movement of particles but no overall change in concentration |
| concentration | the strength of a solution |
| molarity | the number of moles of solute per liter of solution |
| dilution | weakening (reducing the concentration) by the addition of water or a thinner |
| volumetric flask | used to make solutions of known concentration, accurate liq. vol. measurement |
| graduated pipet | glass; common sizes are 10mL, 25mL; used to measure solution in volumes; less accurate than a volumetric pipet. |
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