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Campbell Bio210 Chapter 3

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Continuation of chapter 3 vocabulary words.
Gabriela Kimanyen
Flashcards by Gabriela Kimanyen, updated more than 1 year ago
Gabriela Kimanyen
Created by Gabriela Kimanyen over 8 years ago
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Bio 210 Campbell. Chapter 3 Water and life.
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Adhesion
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The clinging of one substance to another, such as water to plant cell walls by means of hydrogen bonds.
Cohesion
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The linking together of like molecules, often by hydrogen bonds
Surface tension
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A tension a measure of how difficult it is to stretch or break the surface of a liquid, water has a high surface tension because of the hydrogen bonding of surface molecules.
Kinetic energy
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The energy associated with the relative motion of objects. moving matter can perform work by imparting motion to other name.
Temperature
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A measure in degrees of the average kinetic energy (thermal energy) of the atoms and molecules in a body of matter.
Heat
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Thermal energy in transfer from one body of matte to another.
Specific Heat
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The amount of heat that must be absorbed or lost for 1g of a substance to change its temperature by 1 degree celsius.
Evaporation
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The conversion of a liquid into vapour, at temperatures below the boiling point.
Evaporative cooling
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The process in which the surface of an object becomes cooler during evaporation, a result of the molecules with the greatest kinetic energy changing from the liquid to the gaseous date.
Solution
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A liquid that is a homogeneous mixture of two or more substances.
Solvent
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The dissolving agent of a solution. water is the most versatile solvent known.
Solute
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A substance that is dissolved in a solution.
Aqueous Solution
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A solution in which water is the solvent.
Hydrophilic
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Having an affinity for water.
Hydrophobic
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Having no affinity for water; tending to coalesce and form droplets in water.
PH Formula
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A measure of hydrogen ion concentration equal to -log[H+] and ranging in value form 0 to 14
Acid
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A substance that increases the hydrogen ion concentration of a solution.
Base
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A substance that reduces the hydrogen ion concentration of a solution.
Strong
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Weak
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Buffer
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A solution that contains a weak acid and its corresponding base. A buffer minimizes changes in PH when acids or bases are added to the solution.
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