CHEM Test 7 (11th) 21-22

Explain what you understand by kinetic molecular theory

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Attraction between to alike molecules

• adhesion

• cohesion

• none

Molecules of a substance

• are not separated by intermolecular spaces

• are separated by intermolecular spaces

• none

In an ideal gas we consider that

• molecules have no cohesive forces

• molecules have high cohesive forces

• molecules are inexistent

Molecules in ideal gases have

• lower motion than molecules in liquids

• equal motions than molecules in liquids

• higher motion than molecules in liquids

The molecules of an ideal gas

• occupy the complete volume of the vessel

• occupy a fraction of the volume of the vessel

• none

What type of collision do molecules of an ideal gas have?

• inelastic (kinetic energy not conserved)

• elastic (kinetic energy conserved)

• none

Pressure

•  $\frac{Area_{vessel}}{Force_{molecules}}$  

•  $\frac{Force_{molecules}}{Area_{vessel}}$  

• none

Temperature is

• directly proportional to the molecules' kinetic energy

• inversely proportional to the molecules' kinetic energy

• none

Temperature is defined as a

• scale to measure the molecular motion of molecules

• scale to measure the molecular bonds of molecules

• none