Unit 9 Review - Gases

(2401) Gas pressure is caused by

• gas molecules colliding with surfaces

• gas molecules condensing to a liquid

• gas molecules hitting other gas molecule

• barometers

(2401) If all them contain the same number of particles, which flask has the lowest pressure?

• Flask 1 contain the least pressure

• Flask 2 contain the least pressure

• Flask 3 contain the least pressure

• Flask 4 contain the least pressure

(2401) Which of these has the highest pressure?

• 
• 
• 

(2402) The movement of gas molecules is greatly affected by _________.

• the shape of the container

• size of the container

• temperature of the container

(2402) Absolute zero is ____________.

• The only time molecules would not be moving

• 0 degrees Celsius

• -273 K

• The temperature in outer space

(2402) Which particles would be moving the fastest?

• Light molecules at a cold temperature

• Heavy molecules at a cold temperature

• Light molecules at a high temperature

• Heavy molecules at a high temperature

(2407) Which of these statements is TRUE according to the Kinetic Molecular Theory of gases?

• 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

(2407) The Kinetic Molecular 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.

(2407) The kinetic molecular theory says that gases consist of large numbers of tiny particles that are very close together.

• True

• False

(2404) Convert 27^oC to K

• 300 K

• 301 K

• 305 K

• 368 K