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WorksheetsSummative Test 1
Total questions: 16
Worksheet time: 20mins
Which of the following will be the solvent if a polar substance dissolves in an unknown liquid?
Ionic
Non-polar
Polar
Water
Which of the following is an example of non-polar molecule?
O3
N2
ClBr3
SO2
Which of the following is a common structure of a non-polar molecule?
Bent
Trigonal pyramidal
Linear
Trigonal planar
H2O is a polar molecule.
True
False
Which of the following is the correct definition for electronegativity?
the tendency to repel electrons
the amount of energy required to remove an electron
the tendency to attract bonded electrons
the amount of energy released when electron is attached to an atom
Which bond forms when the difference in the electronegativity (ΔEN) is less than 0.5?
polar covalent
nonpolar covalent
ionic
none of the above
Which has the greatest tendency to bond electrons based on their electronegativity (EN) value?
Nitrogen (EN = 3.0)
Carbon (EN = 2.5)
Oxygen (EN = 3.5)
Fluorine (EN = 4.0)
Which of the following is TRUE of intermolecular forces?
The forces that exist between molecules.
The force that exist within molecules.
The force that bonds hydrogen with oxygen.
The strongest force in chemistry.
Which is the strongest intermolecular force below?
Hydrogen bonding
London dispersion force
Ion–ion interaction
Dipole–dipole interaction
Which of the following pertains to London dispersion forces?
They are the weakest intermolecular force.
They operate only in polar molecules.
They operate only in ionic compounds.
They are an attractive force between hydrogen and an electronegative atom.
Which of the following is an intermolecular force of attraction that is present in non-polar molecules?
covalent bond
hydrogen bond
dipole-dipole forces
London dispersion forces
What results to higher boiling points of substances?
strong IMF
weak IMF
low molecular weight
low melting point
Which of these causes a liquid to create a thin film on its surface?
surface tension
viscosity
capillary action
adhesive force
The stronger the intermolecular forces, the more viscous the liquid.
True
False
For a given substance, which of the following phase transitions shows an increase in the intermolecular forces of attraction?
solid to liquid
gas to liquid
liquid to gas
solid to gas
Which FOUR properties below indicate strong intermolecular forces in a liquid?
a lower evaporation rate
a lower boiling point
a higher boiling point
a higher melting point
a higher viscosity
