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WorksheetsChemical Bonding & IMF Learning Check
Total questions: 25
Worksheet time: 15mins
Which of the following properties are affected by intermolecular forces?
state of matter (solid, liquid, gas)
boiling point
melting point
type of bond (ionic/covalent)
viscosity
A substance is a solid at room temperature and has a very high melting point, it also conducts electricity when dissolved in water. What type of bonding is at work here?
ionic
nonpolar covalent
metallic
polar covalent
This liquid substance has a high viscosity and dissolves readily in water. It is most likely which one?
an ionic compound
a nonpolar covalent compound
a polar covalent compound
Why do all bonds form?
so the number of protons equals the number of electrons
so an atom can become unstable
to fill the outermost energy level
Which of these factors affects Viscosity?
Pressure on the liquid
Temperature
Friction
Pressure on the container
A liquid evaporates fast.
The liquid is said to have ________ volatility.
high
medium
low
none of these
A liquid flows very slowly.
The term that describes this observation is...
high volatility
low volatility
high viscosity
low viscosity
Solids X and Y are heated:
X melts at 175˚C.
Y melts at 800˚C
This is evidence that ...
X has stronger intermolecular forces than Y
Y has stronger intermolecular forces than X
X and Y both melt so their intermolecular forces are the same.
X and Y don't have intermolecular forces because they melted.
A substance can remain in the gas phase all the way down to –150˚C before becoming a liquid. The intermolecular forces between particles in this substance are ____.
strong
medium
weak
zero
Which is the most likely thing to be observed when a red polar liquid and yellow nonpolar liquid are poured into a single container?
a uniform orange liquid
a red layer and a yellow layer
a colorless layer and an orange layer
three layers: red, orange, and yellow
Wax is a nonpolar solid.
Hexane is a nonpolar liquid.
Will wax dissolve in hexane?
YES because they are both nonpolar
YES because their names both contain an "x"
NO because at least one substance has to be polar to dissolve.
NO because solids can't dissolve in liquids.
In a polar covalent bond, the electrons gather around...
The atom with the Greatest Electronegativity
The atom with the Lowest Electronegativity
Each atom Equally
None of the Above
The polarity of a bond is determined by...
The sum of the electronegativities of the two atoms
The difference in the electronegativities of the two atoms
The charges of the atoms
None of the Above
Partial charges are present in which type of bond?
Ionic
Nonpolar Covalent
Polar Covalent
Both Polar Covalent and Ionic
What must the difference in electronegativity between two atoms be in order for the bond between them to be polar covalent?
less than 0.4
greater than 1.7
between 0.4 and 1.7
exactly 0
A diatomic molecule like O2 is always _____ because electrons are shared _____
nonpolar; unequally
polar; equally
nonpolar; equally
polar; unequally
Is this molecule polar or non-polar?
Polar
Non-polar
Is this molecule polar or non-polar?
Non-polar
Polar
