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2.3 Biology (JD)
Biology
Term | Definition |
---|---|
polar | describes a molecule with opposite charges on opposite ends |
solution | a homogenous mixture throughout which two or more substances are uniformly dispersed |
aqueous solution | a solution in which water is the solvent |
pH scale | scale used for comparing the relative concentrations of hydronium ions and hydroxide ions in a solution |
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 |
solute | in a solution, the substance that dissolves in the solvent |
hydroxide ion | the OH- ion |
buffer | a solution made from a weak acid and its conjugate base that neutralizes small amounts of acids or bases added to it |
cohesion | the force that holds molecules of a single material together |
solvent | in a solution, the substance in which the solute dissolves |
hydronium ion | an ion consisting of a proton combined with a molecule of water; H30+ |
adhesion | the attractive force between two bodies of different substances that are in contact with each other |
concentration | the amount of a particular substance in a given quantity of a mixture, solution, or ore |
acid | any compound that increases the number of hydronium ions when dissolved in water; acid turns blue litmus paper red and react with base sand some metals to form salts |
capillarity | the attraction between molecules that results in the rise of a liquid in small tubes |
saturated solution | a solution that cannot dissolve any more solute under the given conditions |
base | any compound that increases the number of hydroxide ions when dissolved in water; bases turns red litmus paper blue and react with acids to form salts |