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Ch. 2 Section 3
Section 7
| Term | Definition |
|---|---|
| polar | substance with an uneven distribution of charge |
| hydrogen bond | force of attraction between a hydrogen molecule with a partial positive charge and another atom or molecule with partial or full negative charge |
| cohesion | attractive force that holds molecules of a single substance together |
| adhesion | attractive force between 2 particles of different substances |
| capillary | attraction between molecules that results in the rise of the surface of the liquid when in contact with a solid |
| solution | mixture in which one or more substances are distributed into another substance |
| solute | substance dissolved into the solvent |
| solvent | the substance in which the solute is dissolved |
| concentration | amount of solute dissolved in a fixed amount of the solution |
| saturated solution | solution in which no more solute can dissolve |
| aqueous solution | solutions in which water is the solvent |
| hydroxide ion | OH- ion |
| hrydronium ion | H3O+ |
| acid | solution when number of hydronium ions in a solution is greater than the number of hydroxide ions |
| base | solution contains more hydroxide ions than hydronium ions |
| pH scale | scale from 0-14 to identify an acid and a base |
| buffer | chemical substances that neutralize small amounts of either an acid or a base added to a solution |