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WorksheetsChem 112 Chapter 10 T/F
Total questions: 19
Worksheet time: 11mins
Which of the following is true?
i. If a liquid is cold enough, it will have absolutely no vapor pressure.
ii. When the vapor pressure of a liquid equals the external pressure, the liquid boils.
i. only
ii. only
Both i. and ii.
Neither i. nor ii.
Which of the following is true?
i. All liquids have a vapor pressure.
ii. The vapor pressure of a liquid depends on the percent of
the molecules in the liquid that have enough kinetic energy to escape into the gas phase.
i. only
ii. only
Both i. and ii.
Neither i. nor ii.
Which of the following is true?
There is always motion at the atomic level.
London Dispersion forces are larger, the more massive the molecule.
London Dispersion forces are larger, the more spherically shaped the molecule.
All molecules experience London Dispersion forces.
All molecules experience the dipole-dipole interaction.
Which of the following is false?
London dispersion forces is the same as induced dipole-induced dipole.
Non-polar molecules can be made temporarily polar by interacting with other non-polar molecules.
The only intermolecular force between an oxygen gas molecule and a water molecule is London Dispersion.
The dipole-induced dipole interaction between a polar molecule and a non-polar molecule.
Two polar molecules will interact via the dipole-dipole interaction.
Which of the following is true?
i. All intermolecular forces are electrostatic in origin.
ii. The more massive the molecule, the stronger the dipole-dipole interaction.
i. only
ii. only
Both i. and ii.
Neither i. nor ii.
Which of the following is true?
Hydrogen bonding is an especially strong form of dipole-dipole interaction.
Hydrogen bonding is responsible for water's relatively high boiling point.
Hydrogen bonding is stronger, the larger (more massive) the molecule.
Hydrogen bonding only occurs when hydrogen is bound to oxygen or fluorine.
Which of the following is true?
i. The stronger the electrostatic attraction, the more stable the configuration.
ii. The stronger the electrostatic repulsion, the more stable the configuration.
i. only
ii. only
Both i. and ii.
Neither i. nor ii.
Which of the following is true?
i. The two strands of DNA are held together by hydrogen bonding.
ii. The secondary structures of proteins are due to hydrogen bonding.
i. only
ii. only
Both i. and ii.
Neither i. nor ii.
Which of the following is true?
The strength of the ion-dipole interaction greatly affects the
solubility of ionic solids in water
Chloride ions in water are surrounded by water molecules, with the oxygen side of the water molecule facing the chloride ion.
The ion-dipole interaction between a sodium ion and a water
molecule should be stronger than the ion-dipole interaction between a magnesium ion and a water molecule.
Which of the following is true?
For the ion-ion interaction, the larger the charges of the ion, the
weaker the interaction.
The stronger the ion-ion interaction the larger the lattice enthalpy.
All ionic solids are held together by the ion-ion interaction.
Which of the following is true?
The stronger the intermolecular interactions, the higher the vapor pressure.
Compounds with higher vapor pressure typically have higher boiling points
The higher the temperature, the higher the vapor pressure.
Which of the following is true?
i. The stronger the intermolecular interactions the lower the boiling point.
ii. The stronger the intermolecular interactions the lower the melting point.
i. only
ii. only
Both i. and ii.
Neither i. nor. ii.
Which of the following is true?
A compound composed of two non-metal elements probably has a higher melting point than a compound composed of a metal plus a non-metal.
When a liquid is converted into a gas, covalent bonds are typically broken.
When a molecular solid is converted into a liquid, covalent bonds are broken.
Temperature is a measure of kinetic energy at the atomic-level.
Which of the following is true?
The stronger the intermolecular forces between solvent molecules, the more likely it can dissolve a compound.
Likes dissolve likes means that compounds composed of the same elements should be soluble in each other.
For something to dissolve in something else, the intermolecular
interactions of the mixture have to be of comparable strength to
the intermolecular interactions of the pure stuff.
When you dissolve something in something else, covalent bonds are broken.
Which of the following is true?
Many ionic solids are soluble in water due to hydrogen bonding.
Many ionic solids are soluble in water due to water's large dipole moment resulting in a strong ion-dipole interaction.
If two solutions are immiscible it means that they can be mixed at any ratio to form a uniform solution.
If two compounds are immiscible in each other, they must have similar intermolecular forces.
Which of the following is true?
i. Solids are typically the most stable phase at high temperature.
ii. The phase with the lowest density is the most stable at high pressures.
i. only
ii. only
Both i. and ii.
Neither i. nor ii.
Which of the following is true?
i. Gases are typically the most stable phase at high temperature.
ii. The phase with the highest density is the most stable at high pressures.
i. only
ii. only
Both i. and ii.
Neither i. nor ii.
Which of the following are true?
When the liquid phase is more dense than the solid phase, the melting point decreases as the pressure is lowered.
In general, a sample's phase can be change by either changing the temperature or changing the pressure.
Water is unusual in that its solid phase is less dense than its liquid phase.
Which of the following is true?
Past the critical point (higher temperature and/or higher pressure) liquids and gases can no longer be differentiated.
The triple point is where three phases all have the same potential energy.
The lines on a phase diagram indicate where two phases have the same potential energy.
Hydrogen bonding is responsible for water's ability to dissolve ionic solids.
