Which is the best description of hydrogen bonding?
A) the unique chemical bonds between hydrogen and any other atom in the same molecule
B) the association between hydrogen of one molecule and a region of another molecule which has become negative due to temporary shifts in electron density
C) the polarity associated with a bond between hydrogen and a small electronegative atom to which it is bonded
D) the association between a hydrogen atom which is somewhat positive because it is bonded to a small electronegative atom and an atom of O,N or F on another molecule
E) the temporary attraction between hydrogen atoms on different molecules resulting from shifts in electron density
Correct Answer:
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Q1: Which transformation is condensation?
A)liquid → solid
B)liquid →
Q2: Which combination of characteristics is most likely
Q3: Which process is endothermic?
A)Water condenses on the
Q4: Which process is exothermic?
A)gas → liquid
B)liquid →
Q6: Which molecule will undergo only London dispersion
Q7: Which pair of molecules has the strongest
Q8: Which description best fits a solid?
A)definite shape
Q9: Which transformation is melting?
A)liquid → solid
B)liquid →
Q10: In comparing gases with liquids,gases have _
Q11: Which transformation is evaporation?
A)liquid → solid
B)liquid →
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