Chem 1035 Chapter 5 1 of 32 Chapter 5 Gases and the Kinetic-molecular Theory Three Phases of Matter: Gas Liquid Solid -particles are far apart. A gas is mostly empty space. -gases are compressible -particles are closer together. -liquids are not compressible -particles are very close together in a regular, repeating pattern. -solids are not compressible -gas particles are very mobile with high velocities (~ 1mi/s) -particles are in constant motion, moving randomly and freely liquid particles move with less freedom of motion -particles are not mobile but can only move in place. The particles are held in place.
Chem 1035 Chapter 5 2 of 32 Gas Liquid Solid -there are negligible attractive forces between gas particles so they are free to move. -gases take the shape and volume of their container -there are moderately strong attractive forces holding particles close to each other. -liquids take the shape but not the volume of their container -there are strong attractive forces holding solid particles rigidly in place. -solids do not take the shape or volume of their container