02 Properties of Liquids

Liquids

An intermediate phase between solids and gases, with particles that are not fixed in position, allowing them to take the shape of their container.

Have limited compressibility due to the small spaces between particles

Viscosity

A liquid’s resistance to flow.

Capillary Action

The ability of a liquid to flow through narrow spaces due to adhesive and cohesive forces, sometimes against gravity.

Cohesive Force

Attraction between like molecules.

Adhesive Force

Attraction between unlike molecules.

Surface Tension

Cohesive forces at the surface creating a film like effect.

Heating Curves

Graphs temperature versus time as a substance is heated.

Plateaus

Flat segments in the curve represent phase changes where temperature remains constant.

Melting

Solid to Liquid

Boiling

Liquid to Gas

Cooling Curves

Shows temperature changes as a substance cools, with plateaus at phase changes.

Solid

Definite shape and volume.

Liquid

Definite volume, no definite shape

Gas

No definite shape or volume

Phase Diagrams

Display the physical state of a substance as a function of temperature and pressure.