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Biology: Chapter 2.3
Chapter 2.3 Vocabulary
Term | Definition |
---|---|
Polar | the uneven distribution of charge |
Hydrogen Bond | the force of attraction between a hydrogen molecule with a partial positive charge and another atom or molecule with a partial or full negative charge |
Cohesion | an attractive force that holds molecules of single substance together |
Adhesion | the attractive force between two particles of different substances, such as water molecules and glass molecules |
Capillarity | a related property, which is the attraction between molecules that results in the rise of the surface of a liquid when in contact with a solid |
Solution | a mixture in which one or more substances are uniformly distributed in another substance |
Solute | a substance dissolved in the solvent |
Solvent | the substance in which the solute is dissolved |
Concentration | the amount of solute dissolved in a fixed amount of the solution |
Saturated Solution | is one in which no more of the solute can dissolve |
Aqueous Solution | solutions in which water is the solvent |
Hydroxide Ion | the OH ion |
Hydronium Ion | the H3O+ ion |
Acid | if the number of hydronium ions in a solution is greater than the number of hydroxide ions , then this is the solution |
Base | this solution contains more hydroxide ions than hydronium ions |
pH Scale | the scale scientists discovered for comparing the relative concentrations of hydronium ions and hydroxide ions in a solution |
Buffer | chemical substances that neutralize small amounts of either acid of a base added to a solution |