Gas Properties

When volume increases, pressure must...

• Increase

• Decrease

If you place a balloon in a freezer what happens to the size of the balloon?

• Doubles

• increases

• decreases

• stays still

Tags

NGSS.MS-PS1-4

Dalton's Law states...

• that at a constant temperature the volume of a confined ideal gas varies inversely with its pressure.

• that the total pressure exerted by the mixture of non-reactive gases is equal to the sum of the partial pressures of individual gases

• how gases tend to expand when heated

• that the density of an ideal gas at constant pressure varies inversely with the absolute temperature of the gas.

Dalton's law of...

• Partial Pressure

• Thermodynamics

• Ideal Gas

• Physics

A gas

• has a definite shape but no definite volume

• has a definite volume but no definite shape

• has fast-moving particles

Tags

NGSS.MS-PS1-4

What does this picture represent? 

• solid

• liquid 

• gas

• plasma

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-2

NGSS.MS-PS3-4

Which equation represents Dalton's Law?

• e=mc2

• PV=nRT

• P1/T1=P2/T2

• Ptotal=P1, P2, P3...

Three gases, Ar, N2 and H2 are mixed in a 500L container. Ar has a pressure of 255 torr, N2 has a pressure of 228torr and H2 has pressure of 752torr. What is the total pressure in the container?

• 483torr

• 270torr

• 1235torr

A mixture of hydrogen, nitrogen, and water vapor has a total pressure of 864 mmHg. The partial pressure of hydrogen is 220 mmHg and that of nitrogen is 410 mmHg. What is the partial pressure of water vapor?

• 234 mmHg

• 1.37 mmHg

• 2.64 mmHg

• 1, 494 mmHg

Which of the following is not true about gases?

• They spread out to fill their containers

• They have a low density. 

• The particles move very slowly. 

• The volume changes with whatever shape the room is. 

Tags

NGSS.MS-PS3-4