Behavior of Gases Reading Assignment

Why does a balloon remain inflated?

• Because air is trapped permanently inside it

• Because the balloon material pushes outward

• Because of collisions between gas particles and the balloon walls

• Because the balloon produces its own pressure

What happens to a weather balloon as it rises in the atmosphere?

• Its volume decreases because of higher external pressure

• Its volume increases because of lower external pressure

• Its mass decreases as gas escapes

• It remains the same size at all altitudes

Tags

NGSS.MS-PS2-2

According to Boyle's law, what happens to the pressure of a gas if its volume decreases (with temperature constant)?

• Pressure decreases

• Pressure increases

• Volume remains constant

• Temperature increases

Which mathematical relationship best describes Boyle's law?

• P + V = constant

• P - V = constant

• P x V = constant

• P / V = constant

What causes pressure to increase when gas is squeezed into a smaller container?

• The particles stop moving

• The particles collide with each other less often

• The particles strike the container walls more often

• The particles lose energy

Tags

NGSS.MS-PS2-2

What happens to the volume of a gas if temperature increases but pressure is held constant (Charles's law)?

• The volume increases

• The volume decreases

Why do gases expand when heated, according to kinetic theory?

• The particles shrink in size

• The particles move faster and hit the walls harder

• The number of gas particles increases

• The pressure inside decreases

Tags

NGSS.MS-PS1-4

In Charles's law, the ratio of which two quantities remains constant when pressure is constant?

• Pressure and volume

• Volume and temperature (in kelvins)

• Pressure and temperature

• Mass and volume

What eventually causes a weather balloon to rupture?

• The balloon cools down too much

• The gas inside condenses into liquid

• The volume of the gas expands beyond the balloon's capacity

• The external air pressure becomes too high

Tags

NGSS.MS-PS1-4

According to Boyle's law, if the volume of a gas is doubled while temperature is constant, what happens to the pressure?

• It doubles

• It is cut in half

• It stays the same

• It becomes zero