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Chapter 2 Section 3

Biology vocab

TermDefinition
Polar Describes a molecule in which the positive and negative charges are separated
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 *Holds it to itself!!!*
Adhesion The attractive force between two bodies of different substances that are in contact with each other *Holds it to other things!!!*
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
Solvent In a solution, the substance in which something dissolves in
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 condutions
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; H3O+
Acid Any compound that increases the number of hydronium ions when dissolved in water; (__)'s turn blue litmus paper red and react with opposite and some metals to form salts
Base Any compound that increases the number of hydroxide ions when dissolved in water; (___)'s turn red litmus paper blue and react with opposite to form salts
pH Scale Scale for comparing the relative concentrations of hydronium ions and hydroxide ions in a solution
Buffer A solution made from a weak acid and its conjugate base that neutralizes small amounts of acids or bases added to it
Created by: Sadrian18
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