CHEM Test 5 (11th) 21-22

Molecules of a substance are separated by

• intermolecular spaces

• chemical bonds

• none of the above

Choose the correct one

• Molecules of a gas are slower than those of a solid

• Molecules of a liquid are more loose than those of a gas

• Molecules of a solid are more compacted than those of a gas

The intermolecular space between molecules determine

• the color of the substance

• if the substance is gas, liquid or solid

• if the substance is explosive

There are essentially two forces acting upon molecules, these are

• expansive, contractive

• adhesion, cohesion

• potential, kinetic

Adhesion is

• the attraction between two alike molecules

• the attraction between two unlike molecules

• none of the above

Cohesion is

• the attraction between two alike molecules

• the attraction between two unlike molecules

• none of the above

The chaotic motion of molecules of a gas is called

• Molecular kinetics

• Molecular momentum

• Molecular space

Choose the correct one

• Molecules of a gas are crashing only against each other

• Molecules of a gas are crashing only against the walls of the vessel

• Molecules of a gas are crashing against each other and the walls of the vessel

The collision of molecules of an Ideal Gas are considered

• Elastic

• Inelastic

• Nonve

For an Ideal Gas the intermolecular space is quite large, therefore

• the cohesion forces are null

• the adhesion forces are null

• none of the above