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Biology Chapter 2.3

Biology Chapter 2-3

TermDefinition
Polar describes a molecule with opposite charges on opposite ends
Hydrogen Bond the intermolecular force occurring when a hydrogen atom that is bonded to a highly electronegative atom of one molecule
Cohesion the force that holds the molecules of a single material together
Adhesion the attractive force between two bodies of different substances that are in contact with each other
Capillarity the attraction between molecules that results in the rise of
Solution a homogeneous mixture throughout which two or more substances are uniformly dispersed
Solute the substance that dissolves in the solvent in a solution
Solvent the substance in which the solute dissolves in a solution
Concentration the amount of a particular substance in a given quantity of a mixture, solution or ore
Saturated Solution a solution that can not 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 H3O+
Acid Any compound that increases the number of hydronium ions when dissolved in water- Acids turn blue litmus paper red and reacts with bases and some metals to form salts
Base any compound that increases the number of hydroxide ions when dissolved in water bases turn red litmus paper blue and react with acids to form salts
pH Scale A range of values that are used to express the acidity or basicity of a system each whole number on the scale indicates a tenfold change in acidity 7=neutral 1=acid 14=base
Buffer a solution made up of a weak acid and its conjugate base that neutralizes smaller amounts of acids or bases added to it
Created by: faithcayia