Heating/Cooling Curves and Properties of Water

Front

What word describes when water is attracted to other substances?

Back

Adhesion: The tendency of water molecules to be attracted to other substances, allowing it to spread and wet surfaces.

Front

What is the term for the process of a substance changing from a gas to a liquid?

Back

Condensation: The process where gas molecules lose energy and transition into a liquid state.

Front

What is the boiling point of water at standard atmospheric pressure?

Back

100°C: The temperature at which water transitions from liquid to gas.

Front

What is the freezing point of water at standard atmospheric pressure?

Back

0°C: The temperature at which water transitions from liquid to solid.

Front

What is the term for the energy required to change a substance from solid to liquid?

Back

Heat of Fusion: The amount of energy needed to melt a solid into a liquid.

Front

What is the term for the energy required to change a substance from liquid to gas?

Back

Heat of Vaporization: The amount of energy needed to convert a liquid into a gas.

Front

Between which points on a heating curve does the temperature remain constant during a phase change?

Back

B-C, D-E: These segments represent phase changes where temperature does not change.

Front

In which segment of a heating curve is the kinetic energy of the substance constant?

Back

B-C: This segment represents the phase change from solid to liquid (melting) where temperature remains constant.

Front

What is cohesion in relation to water?

Back

Cohesion: The attraction between water molecules, which allows for surface tension.

Front

What is capillary action?

Back

Capillary Action: The ability of water to flow in narrow spaces against gravity, due to adhesion and cohesion.