1. Intermolecular forces do not have any effect on determining the physical properties of substances such as surface tension and
melting point. a. TRUE
b. FALSE
2. The solids and liquids with the strongest intermolecular forces of attraction will have the lowest melting and boiling points.
a. TRUE
b. FALSE
3. In carbon dioxide, London dispersion forces are the only intermolecular forces of attraction.
a. TRUE
b. FALSE
4. Intermolecular hydrogen bonding plays an important role in the structure of polymers.
a. TRUE
b. FALSE
5. The intermolecular forces of attraction in hydrogen gas are stronger than those of helium gas.
a. TRUE
b. FALSE
6. At room temperature and 1 atm, covalent crystals are solid.
a. True
b. False
7. Intermolecular forces hold the oxygen and hydrogen atoms together in a water molecule.
a. TRUE
b. FALSE
8. In a diamond, each carbon atom is covalently bonded to four other carbons in a _____.
a. Polyhedron
b. Hexagon
c. Pentagon
d. Tetrahedron
9. As the temperature increases, the molecular motion of the molecules decreases and it becomes difficult to overcome the polar attractions.
a. TRUE
b. FALSE
10. Intermolecular forces can exist between:
a. Atoms
b. Molecules
c. Ions
d. All of the above
Pressure of the trapped gas and the pressure on the outside on the piston are the same.
Explanation:
When the piston is at rest, then it exist a mechanical equilibrium, that is to say, that pressure of the trapped gas is equal to the pressure on the outside of the piston.
