click below
click below
Normal Size Small Size show me how
chapter 2.3
Vocabulary
Term | Definition |
---|---|
polar | describes a molecule with opposite charges on the opposite ends. |
hydrogen bond | the intermolecular force occurring when a hydrogen atom that is bonded to a highly electronegative atom of one molecule is attracted to two unshared electrons of another molecule |
cohesion | the force that holds molecules of a single material together |
adhesion | Two substances stick to each other |
capillarity | the attraction between molecules that results in the rise of a liquid in small tubes. |
solution | a homogeneous mixture throughout which two or more substances are uniformly dispersed. |
solute | in a solution, the substance that dissolves in the solvent. |
solvent | in a solution, the substance in which the solute dissolves. |
concentration | the amount of a particular substance in a given quantity of a mixture, solution, or ore |
saturated solution | a solution that cannot dissolve any more solute under the given conditions. |
aqueous solution | a solution in which water is the solvent |
hydroxide ion | the OH- ion |
hydronium ion | an ion consisting of a proton combined with a molecule of water. |
acid | any compound that increases the number of hydronium ions when dissolved in water; turn blue litmus paper red |
base | any compound that increases the number of hydroxide ion s when dissolved; turns red litmus paper blue |
ph scale | the range of values that are used to express the acidity or alkalinity of a system. |
buffer | a solution made from a weak acid and its conjugate base that neutralizes small amounts of acids or bases added to it. |