Chapter 12: States of matter

The phase change that describes the direct conversion of a solid into a gas is _______.

• vaporization

• sublimation

• melting

• deposition

The point on a phase diagram where the solid state, the liquid state, and the gas vapor state can coexist is _________.

• the pressure point

• the absolute zero point

• the critical point

• the triple point

In what directions must energy be added to cause the indicated phase change?

• solid to liquid, liquid to gas, solid to gas

• solid to liquid, gas to liquid, solid to gas

• solid to liquid, liquid to gas, gas to solid

• solid to gas, gas to liquid, liquid to solid

The boiling point of a liquid is the temperature at which ________.

• vapor pressure is greater than atmospheric pressure

• Vapor pressure is equal to atmospheric pressure

• Vapor pressure is less than atmospheric pressure.

• vapor pressure is zero

Dry ice is solid carbon dioxide. What combination of factors can change dry ice into a liquid?

• Increase temperature and decrease pressure.

• Decrease both temperature and pressure.

• Decrease temperature and increase pressure.

• Increase both temperature and pressure.

760 mm Hg is equal to __________760 mm Hg is equal to __________

• 1 Torr

• 1 pascal

• 1 kilopascal

• 1 atmosphere

Solids with no repeating pattern are _________.

• ionic

• crystalline

• liquids

• amorphous

What is the point at which all six phase changes can occur ?

• The melting point

• The boiling point

• The critical point

• The triple point

What are the forces that determine a substance’s physical properties ?

• Intermolecular forces

• Intramolecular forces

• Internal forces

• Dispersal forces

Hydrogen bonds are a special type of _______.

• Ionic bond

• Covalent bond

• Dipole-dipole force

• Dispersion force