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CAMPBELL BIOLOGY 12TH EDITION CHAPTER 3 EXAM QUESTIONS AND ANSWERS
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CAMPBELL BIOLOGY 12TH EDITION CHAPTER 3 EXAM QUESTIONS AND ANSWERS
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CAMPBELL BIOLOGY 12TH EDITIONCHAPTER 3 EXAM QUESTIONS AND
ANSWERS
Polar molecule - Answer-molecule with an unequal distribution of charge, resulting in
the molecule having a positive end and a negative end
Cohesion - Answer-Attraction between molecules of the same substance
Surface tension - Answer-a measure of the force necessary to stretch or break the
surface of a liquid, is related to cohesion.
Specific heat - Answer-The amount of energy required to raise the temperature of 1
gram of a substance by 1 degree celcius
Temperature - Answer-Temperature measures average kinetic energy of molecules in a
body of matter regardless of volume
Evaporative cooling - Answer-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 state.
Heat of vaporization - Answer-Heat of vaporization is the quantity of heat that a liquid
must absorb for 1 g of it to be converted from liquid to gas.
Solvent - Answer-A liquid substance capable of dissolving other substances
Hydrophilic - Answer-Attracted to water Hydrophilic substances are dominated by ionic
or polar bonds.
Hydrophobic - Answer-Water fearing substances are nonionic and have nonpolar
covalent bonds.
Molarity - Answer-the number of moles of solute per liter of solution.
Solute - Answer-A substance that is dissolved in a solution.
Solution - Answer-A mixture that forms when one substance dissolves another.
Mole - Answer-The number of grams of a substance that equals its molecular or atomic
mass in daltons; a mole contains Avogadro's number of the molecules or atoms in
question.
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