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As a liquid is heated, the kinetic energy of its particles ---------
increases
Dipole-dipole forces involve polar or nonpolar molecules?
It exists between polar molecules.
The polarity of diatomic molecules such as ICl is determined by just ------ bond.
A) one
B) two
C) three
one
What type of intermolecular force contributes to the high boiling point of water?
Hydrogen-bonding
Which of these is the weakest intermolecular force?
A) Dipole-dipole
B) Hydrogen bonding
C) London dispersion forces
C) London dispersion forces
The forces of attraction between molecules are known as -----------
intermolecular forces
How is a dipole formed?
A dipole is created by equal but opposite charges that are separated by a short distance.
For molecules containing more than two atoms, molecular polarity depends on both the ------- and the ------- of each bond.
polarity - orientation
What is hydrogen-bonding?
The intermolecular force in which a hydrogen atom that is bonded to a highly electronegative atom is attracted to an unshared pair of electrons of an electronegative atom in nearby molecule.
What is London dispersion forces?
The intermolecular attractions resulting from the constant motion of electrons and the creation of instantaneous dipoles.
What are the 3 types of intermolecular forces?
Dipole - dipole forces, hydrogen bonding, and London dispersion forces
A dipole is represented by an arrow with a head pointing toward the ------ pole and a crossed tail situated at the ------ pole.
(negative-negative)
(negative-positive)
(positive-positive)
negative-positive
Why is an ammonia molecule so highly polar?
This is because the dipoles of the three nitrogen-hydrogen bonds are addictive, combining to create a net molecular dipole.
What are three examples of hydrogen-containing compounds?
hydrogen fluoride (HF), water (H2O), and ammonia (NH3).
London forces act between ------ and ------.
atoms and molecules
Intermolecular forces vary in (strength/shape/color)
strength
What is the boiling point of iodine chloride?
97 Degrees Celsius
A polar molecule can ------ a dipole in a nonpolar molecule by temporarily attracting its electrons.
induce
The ------- of the hydrogen atom allows the atom to come very close to an unshared pair of electrons on an adjacent molecule.
small size
London forces (increase/decrease/stay the same) with increasing atomic or molar mass.
increase
The values for ------- and ------- are much higher than those for molecular substances.
ionic compounds and metals
Are the dipole-dipole forces short-range or long-range forces?
They are short-range forces, acting only between nearby molecules
What does the force of an induced dipole account for?
It accounts for the solubility of nonpolar O2 in water.
In compounds containing H-F, H-O, or H-N bonds, the large electronegativity differences between hydrogen atoms and fluorine, Oxygen, or nitrogen atoms make the bonds connecting them ------.
highly polar
London forces are stronger in heavier atoms/molecules, and weaker in lighter atoms/molecules. So, which of these has the strongest London forces?
A) F2
B) Br2
C) I2
D) Cl2
C) I2