Motion of Gases

According to the kinetic theory of gases, what is the primary factor that determines the pressure of a gas?

• Number of gas molecules colliding with the walls of the container per unit area

• Mass of the gas molecules

• Volume of the container

• Temperature of the gas

What is the process by which gas molecules spread out and mix with other gases called?

• sublimation

• evaporation

• diffusion

• condensation

When a gas is heated, what happens to the average kinetic energy of its molecules?

• decreases

• remains the same

• increases

• becomes solid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which gas law states that the pressure of a gas is inversely proportional to its volume, assuming constant temperature?

• Boyle's Law

• Gay-Lussac's Law

• Avogadro's Law

• Charles's Law

What is the process by which a gas changes directly into a solid without passing through the liquid state called?

• sublimation

• condensation

• evaporation

• deposition

What is the term for the average kinetic energy of the molecules in a gas?

• density

• volume

• temperature

• pressure

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the process by which a gas changes directly into a liquid called?

• condensation

• sublimation

• solidification

• evaporation

Tags

NGSS.MS-PS1-4

The composition of gases in air is

• 78% Nitorgen

  21%oxygen

  0.03% carbon dioxide

  and mix of watervapor and other gases

• 0.03% Nitorgen

  21%oxygen

  78 %carbon dioxide

  and mix of watervapor and other gases

• 78% Nitorgen

  21%carbon dioxide

  0.03% oxygen

  and mix of watervapor and other gases

• Equal amount of carbon dioxide and oxygen

What is the empty bottle full of?

• invisible water

• invisible ink

• air which is always invisible

Every cubic centimeter of air inside and outside the bottle has the same number of particles. Is this statement true or False

• True

• False