Real Gases

A gas that has a pressure of 2 Pa and a volume of 10 m3. Choose the equation which should be used to find out the new volume if the pressure was changed to 1 Pa keeping the system at 300 K?

• P1/T1 = P2/T2

• P1V1 = P2V2

• V1/n1 = V2/n2

• PV = nRT

If temperature is held constant, what is the relationship between the pressure and volume of gases?

• directly proportional

• indirectly proportional

• inversely proportional

What specific phase of matter has no fixed shape and volume?

• Solid

• Liquid

• Gas

• Plasma

Tags

NGSS.MS-PS1-4

When you open a can or bottle of soft drinks, it fizzes because of the escaping dissolved carbon dioxide due to change of __________.

• Pressure

• Volume

• Mass

• Temperature

Based on the Kinetic Molecular Theory, gases are composed of molecule. The following statements are TRUE regarding the molecules of gases, EXCEPT:

• The distances from one molecule to another molecule are far greater than the molecules’ dimension

• The molecules of gases are always in constant random motion

• The gas molecules have weak intermolecular forces in between them

• Temperature has small effect on the movement of gas molecules

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-2

Gases have the tendency to occupy all the spaces of the container that they are confined. The amount of space occupied by the gases is called ______.

• pressure

• volume

• temperature

• mass

Mika can still pump air in her purple balloon even though it is already inflated. What explains this phenomenon?

• balloon looks better if it is bigger

• balloon are slightly elastic

• the molecules of gas inside a balloon is highly compressible

• the gas molecules in a balloon have high pressure

Which equation represents the behavior of real gases more accurately than ideal gases?

• Van der Waals equation

• Boyle's Law

• Charles's Law

What is the main reason real gases deviate from ideal gas behavior?

• High temperature

• Low pressure

• Intermolecular forces

• Large volume

Which of the following is a characteristic of real gases?

• No volume

• No intermolecular forces

• Compressibility factor is 1

• Deviate from ideal behavior at high pressure