Intermolecular Forces
This intermolecular force exists in all molecules, even nonpolar ones.
What is Dispersion forces
This term describes a liquid’s tendency to evaporate.
What is Vapor pressure
During a phase change, this quantity remains constant.
What is Temperature.
This property explains why water beads up on a surface.
What is Surface tension
This type of solid has long-range repeating order.
What is Crystalline solid
This type of IMF occurs when hydrogen is bonded to nitrogen, oxygen, or fluorine.
What is Hydrogen Bonding
Boiling occurs when vapor pressure equals this quantity.
External (atmospheric) pressure
Energy added during a phase change is used to overcome this.
What is Intermolecular forces
Surface tension increases as this increases.
What is Intermolecular force strength
This is the smallest repeating unit in a crystal lattice.
What is Unit cell
This force explains why NaCl dissolves easily in water.
What is Ion–dipole forces
As intermolecular forces increase, vapor pressure does this (Increasing or decreasing)?
What is decreasing
Which form of energy increases during a phase change: kinetic or potential?
What is Potential Energy
This property explains why water rises in a thin glass tube.
What is Capillary action
This unit cell has atoms at the corners and the center.
What is Body-centered cubic (BCC)
These forces increase as molecular size and polarizability increase.
What is Dispersion forces
This is why water boils at a lower temperature on a mountain.
What is Lower atmospheric pressure
Why does ΔHᵥₐₚ tend to be larger than ΔH𝒻ᵤₛ?
Why does ΔHᵥₐₚ tend to be larger than ΔH𝒻ᵤₛ?
Capillary rise occurs when this force is stronger than cohesion.
What is Adhesive forces
This crystal structure explains why ice is less dense than liquid water.
What is An open hydrogen-bonded lattice
Two molecules have the same molar mass. One is polar and one is nonpolar. Name the dominant force that explains why the polar molecule usually has a higher boiling point.
What is Dipole–dipole interactions
A liquid has strong IMFs and low vapor pressure. What does this imply about its boiling point (High or Low)?
What is high boiling point
On a heating curve, what does a flat segment tell you about the balance between energy input and molecular motion?
What is Energy goes into overcoming the IMFs, not increasing kinetic energy.
Mercury does not rise in a glass capillary tube because its cohesion is stronger than its adhesion to glass.
What is cohesion greater than adhesion?
Why does ice floats on liquid water.
What is
Hydrogen bonding creates an open, rigid structure in ice, spacing molecules farther apart than in liquid water, lowering density.