Kinetic Molecular Theory & States of Matter

Which of the following is an assumption of the kinetic-molecular theory of gases?

• Collisions between gas particles are inelastic.

• Gases consist of closely spaced particles.

• Gas particles move around in an orderly manner.

• The temperature of a gas depends on the average kinetic energy of the gas particles.

Which of the following is not a physical property of gases?

• absence of definite volume

• high density

• high compressibility

• fluidity

Which states of matter are fluid?

• gases and liquids

• liquids and solids

• gases only

• liquids only

Gas pressure is caused by

• gas molecules colliding with surfaces
• gas molecules condensing to a liquid
• gas molecules hitting other gas molecule
• barometers

• Gases do not move in straight line
• Most of the volume of gas is empty space
• Gas particles are not in constant random motion
• Gas particles attract each other

Solids are described as having a 

• definite shape and indefinite volume
• indefinite shape and indefinite volume
• definite shape and definite volume
• indefinite shape and definite volume

According to kinetic molecular model, in gases,

• The particles are closely packed together, they occupy minimum space and are usually arranged in a regular pattern

• The particles occur in clusters with molecules slightly further apart

• The molecules are very far apart and occupy all space made available to them

• The particles vibrate about fixed positions and are held together by strong intermolecular bonds between them

What is the difference between particles in a gas and a solid?

• gas particles are closer together
• solid particles move faster than gas particles
• solid particles expand on heating
• gas particles have more kinetic energy than solid particles

In what direction(s) does air exert pressure?

• everywhere
• no where
• there is no pressure
• downward

A _____________ is the scientific  instrument used to measure air pressure.

• barometer
• thermometer
• mercury
• watch