Kinetic Molecular Theory

Gas pressure is caused by

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

Tags

NGSS.MS-PS2-1

At what temperature do nitrogen molecules move fastest?

• 350 K
• 300 K
• 250 K
• 200 K

Tags

NGSS.HS-PS3-2

What happen to the energy of the system when the molecules collide with each other?

• Energy increases
• Energy decreases
• Energy remains the same

Tags

NGSS.HS-PS3-2

If a gas has the same temperature throughout, which gas molecule has the highest average velocity?

• O₂

• H₂O

• H₂

• Xe

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

• absence of definite volume

• large density

• high compressibility

• fluidity

The rate of effusion is _______________ proportional to the square root of its' molar mass. 

• Directly
• Inversely 

Which of the following would have a faster rate of effusion: 15g of Kr or 15g of N₂?

• Kyrpton
• Nitrogen
• Both would have the same rate of effusion

The energy of an object as it is in motion is defined as

• Kinetic Theory
• Kinetic energy
• Potential energy
• Electric energy

Tags

NGSS.HS-PS3-2

Gas molecules can easily be compressed  because ___________. 

• gas molecules are soft
• gas molecules are far apart
• gas molecules follow the shape of the container

The kinetic theory states

• Particles won't move if you don't apply energy to it.

• Particles only move in liquids and gases.

• Particles are always in motion.

• At the same temperature the object that has the most mass heats quicker.

Tags

NGSS.HS-PS3-2