UNE week 1/2 chem review, UNE week chem
1011 3-4 review, UNE Chem 1011 week 5-7
review Questions with complete solutions
A hydrogen bond is characterized by correct answer: the highly
concentrated partial charge between an H atom and F, O, or N
atoms
Which of the following exhibits hydrogen bonding?
CH3OH,HCl,CH2O, HCN correct answer: CH3OH
An adhesive force correct answer: is the result of the
intermolecular forces that attract different molecules together
An Intermolecular Force correct answer: is the result of the
intermolecular forces that attract identical molecules
Liquids with high surface tension must have correct answer:
strong cohesive forces
ΔHfrz is correct answer: the energy change when a substance
changes from the liquid phase to the solid phase
In a phase diagram, the critical temperature represents correct
answer: the maximum temperature that a liquid can exist,
regardless of pressure
, Covalent network solids correct answer: are composed of atoms
held together by a repeating network of covalent bonds
A dispersion force is characterized by correct answer: the
attraction of temporary dipoles produced by the random
asymmetries in electron motion
Ionic solids correct answer: are composed of positive and
negative ions held together by electrostatic attractions
A liquid tube will form a concave meniscus when correct
answer: The adhesive forces are stronger than the cohesive
forces
Dispersion forces are the primary IMF for which type of
molecules? correct answer: non-polar
dipole-dipole interactions correct answer: Forces of attraction
between molecules which are permanently polar Examples: CO,
NH3, HI
Crystaline solid correct answer: A solid that is made up of
crystals in which particles are arranged in a regular, repeating
pattern
amorphous solid correct answer: describes a solid that lacks an
ordered internal structure; denotes a random arrangement of
atoms
1011 3-4 review, UNE Chem 1011 week 5-7
review Questions with complete solutions
A hydrogen bond is characterized by correct answer: the highly
concentrated partial charge between an H atom and F, O, or N
atoms
Which of the following exhibits hydrogen bonding?
CH3OH,HCl,CH2O, HCN correct answer: CH3OH
An adhesive force correct answer: is the result of the
intermolecular forces that attract different molecules together
An Intermolecular Force correct answer: is the result of the
intermolecular forces that attract identical molecules
Liquids with high surface tension must have correct answer:
strong cohesive forces
ΔHfrz is correct answer: the energy change when a substance
changes from the liquid phase to the solid phase
In a phase diagram, the critical temperature represents correct
answer: the maximum temperature that a liquid can exist,
regardless of pressure
, Covalent network solids correct answer: are composed of atoms
held together by a repeating network of covalent bonds
A dispersion force is characterized by correct answer: the
attraction of temporary dipoles produced by the random
asymmetries in electron motion
Ionic solids correct answer: are composed of positive and
negative ions held together by electrostatic attractions
A liquid tube will form a concave meniscus when correct
answer: The adhesive forces are stronger than the cohesive
forces
Dispersion forces are the primary IMF for which type of
molecules? correct answer: non-polar
dipole-dipole interactions correct answer: Forces of attraction
between molecules which are permanently polar Examples: CO,
NH3, HI
Crystaline solid correct answer: A solid that is made up of
crystals in which particles are arranged in a regular, repeating
pattern
amorphous solid correct answer: describes a solid that lacks an
ordered internal structure; denotes a random arrangement of
atoms
