Bio 212 Exam 1 Ch 1-5 Questions and Answers
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Which occurs faster at equilibrium? Formation of reactants or products? They occur at
the same rate
Isotopes differ in the amount of neutrons
polar molecule means that its overall charge is unequally distributed
cohesion is -hydrogen bonds holding water molecules together
-high surface tension
-spiders can walk across a pond due to tension
-contributes to transportation of nutrients and water against plants gravity
Adhesion is -clinging of water molecules from itself to another substance
Thermal energy depends on the volume
, Bio 212 Exam 1 Ch 1-5 Questions and Answers
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Water is known for having -high specific heat
-1 cal/g
-absorbs or loses lots of energy with each degree change
increase in heat increases the kinetic energy speed
ability of ice to float has to do with ice's lower density
Like dissolves like so the best compounds to dissolve in water are polar compounds
hydrophillic substances have an affinity for water without dissolving
-ex) cotton towel can absorb water but not dissolve
-cellulose
hydrophobic substances have -repels water
-nonionic and nonpolar molecules
, Bio 212 Exam 1 Ch 1-5 Questions and Answers
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Describe how properties of water contribute to the upward movement of water in a tree
Capillary action brings up the water through the roots with help of adhesion and cohesion
Acids increase concentration of hydrogen ions
carbon usually forms single and double forms to form big complex molecules
hydrocarbons only consist of carbons and hydrogens only
isomers are compounds with the same molecular formula but different structures and
properties
structural isomers differ in the arrangements of atoms
-like different locations of double bonds
cis-trans isomers differ in the arrangement around a double bond
Verified by Experts
Which occurs faster at equilibrium? Formation of reactants or products? They occur at
the same rate
Isotopes differ in the amount of neutrons
polar molecule means that its overall charge is unequally distributed
cohesion is -hydrogen bonds holding water molecules together
-high surface tension
-spiders can walk across a pond due to tension
-contributes to transportation of nutrients and water against plants gravity
Adhesion is -clinging of water molecules from itself to another substance
Thermal energy depends on the volume
, Bio 212 Exam 1 Ch 1-5 Questions and Answers
Verified by Experts
Water is known for having -high specific heat
-1 cal/g
-absorbs or loses lots of energy with each degree change
increase in heat increases the kinetic energy speed
ability of ice to float has to do with ice's lower density
Like dissolves like so the best compounds to dissolve in water are polar compounds
hydrophillic substances have an affinity for water without dissolving
-ex) cotton towel can absorb water but not dissolve
-cellulose
hydrophobic substances have -repels water
-nonionic and nonpolar molecules
, Bio 212 Exam 1 Ch 1-5 Questions and Answers
Verified by Experts
Describe how properties of water contribute to the upward movement of water in a tree
Capillary action brings up the water through the roots with help of adhesion and cohesion
Acids increase concentration of hydrogen ions
carbon usually forms single and double forms to form big complex molecules
hydrocarbons only consist of carbons and hydrogens only
isomers are compounds with the same molecular formula but different structures and
properties
structural isomers differ in the arrangements of atoms
-like different locations of double bonds
cis-trans isomers differ in the arrangement around a double bond
