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Properties of Water

Biology II

TermDefinition
Boiling Point The point where water turns to vapor
Freezing Point the point at which a liquid turns to a solid
Specific Heat the heat required to raise the temperature of the unit mass of a given substance by a given amount.
Melting Point the temperature at which a given solid will melt.
Cohesion the action or fact of forming a united whole
Intermolecular Force forces that act between stable molecules or between stable molecules or between functional groups of macromolecules
Molecules a group of atoms bonded together representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
Adhesives able to stick fast to a surface or object.
Evaporation the process by which a liquid changes into a gas
Density a property of matter representing the mass per unit of volume
Fresh Water water that is not salty and has little or no taste, color, or smell. Most lakes and rivers are made up of fresh water.
Condensation water vapor becoming a liquid
Precipitation any type of liquid or solid water that falls to earth's surface, such as rain, snow, or hail.
Water Vapor water in the form of gas
Surface Tension the result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together.
Universal Solvent Water due to its polarity and ability to dissolve many different solutes.
Fahrenheit of or denoting a scale of temperature on which water freezes at 32 and boils at 212 under standard conditions
Atom the basic unit of a chemical
Independent Variable changed by the scientist
Dependent Variable to see how it responds to the change mazde to the independent variable
Controlled Variables quantities that a scientist wants to remain constant
Solute The component in a solution dissolved in the solvent
Ion an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
Polarity A molecule with a net dipole as a result of the opposing charges
Refraction the bending or turning of light waves when it passes through water
Reflection projecting back an image through light without absorbing it
Conductivity the ability or power to conduct or transmit heat, electricity, or sound
Cation an ion or group of ions that have a positive charge
Anion an ion or group of ions that have a negative charge
Electrolyte a chemical compound that breaks into seperate ions when it is dissolved or molten to produce an electrically conductive product
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