Solids, Liquids, and Gases - Liquids

Question 1

liquids

Answer 1

• fluidity:
• flow and diffuse
• lower than gases
• viscosity: measure of the resistance of a liquid to flow
• higher than gases
• higher for bigger molecules
• decreases with increases in temperature
• surface tensions
• cohesion exists between like molecules
• adhesion exists between different molecules
• capillary action

Question 2

condensation of gases to liquids

Answer 2

• gases condense to liquids as they are cooled or the pressure increases
• an ideal gas would have not attractive forces
• a real gas has attractive forces
• condensation point = boiling point
• gas to liquid = liquid to gas
• as pressure increases the boiling point increases

Question 3

vapor pressure

Answer 3

• vaporization and condensation continue, but no net change in number of molecules leaving the liquid for the gas phase
• a measure of the pressure exerted by a vapor that is in equilibrium with its liquid or solid

Question 4

boiling

Answer 4

• when vapor pressure is equal to external pressure

- high vapor pressure = low boiling point

Question 5

____ describes the forces that exist between different molecules

Answer 5

• adhesion

Question 6

____ describes the process by which a gas turns into a liquid

Answer 6

• condensation

Question 7

____ describes the unbalanced attractive force that molecules experience at the air-liquid interface

Answer 7

• surface tension

Question 8

____ describes the process by which liquid molecules from gases

Answer 8

• vaporization

Question 9

liquids have a ____ shape and a ____ volume

Answer 9

• indefinite, definite

Question 10

______ occurs when the vapor pressure of a liquid is equal to the external atmospheric pressure

Answer 10

• boiling