3-1 Terms Related to IMF

Multiple Choice

Definition of normal boiling point:

• The boiling point of a substance at an elevation of 8,000

• The boiling point of a substance of 0.61 atm

• The boiling point of a substance at standard pressure

• The boiling point at the most highest elevation available

Multiple Choice

According to the reference table, what is the boiling point of ethanoic acid at 80 kPa?

• 28 ^oC

• 100^oC

• 111^oC

• 125^oC

Multiple Choice

In order for something to melt...

• the objects temperature needs to be lowered

• the molecules slow down to a "stand still"

• you turn the air conditioner on

• it requires the object's melting point to be reached

Multiple Choice

The temperature at which a substance changes states from a solid to a liquid

• Freezing point

• Melting point

• Evaporation

• Condensation

Multiple Choice

What is the property of a liquid's surface that allows it to resist an external force?

• Viscosity

• Surface tension

• Density

• Buoyancy

Reorder

Rank these in order of strength from strongest to weakest (strongest on the left)
covalent bond
London forces
hydrogen bond
dipole-dipole attraction

• covalent bonding

• hydrogen bonding

• dipole (strongly polar molecules)

• dipole

  (weakly polar molecules)

• dispersion force

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Multiple Choice

What is volatility in terms of a substance's tendency to change from a liquid or solid into a gas?

• The ability to freeze quickly

• The tendency to evaporate

• The ability to dissolve in water

• The tendency to solidify

Multiple Choice

What is vapor pressure and how does it relate to intermolecular forces and temperature?

• The pressure exerted by a gas in a sealed container

• The pressure exerted by a liquid in equilibrium with its gas phase

• The pressure that increases with temperature

• The pressure that decreases with weak intermolecular forces

Multiple Choice

What is happening to the particles in the substance between points D and E?

• Melting

• Freezing

• Vaporizing

• Sublimating

Multiple Choice

Which graduated cylinder has a liquid with the highest viscosity?

• The graduated cylinder with the ball at 20mL.

• The graduated cylinder with the ball at 30mL.

• The graduated cylinder with the ball at 40mL.

• The graduated cylinder with the ball at 50mL.

Multiple Choice

Maple syrup is has a high viscosity. This is because maple syrup

• will change its density with temperature

• is able to dissolve salt

• conducts electricity

• has a high resistance to flow.