Gas Law Concepts NCS

According to the kinetic-molecular theory, particles of matter ___.

• are in constant motion

• have different shapes

• have different colors

• are always fluid

Tags

NGSS.HS-PS3-4

The kinetic-molecular theory explains the behavior of ___.

• gases only

• solids and liquids

• liquids and gases

• solids, liquids, and gases

Tags

NGSS.HS-PS3-4

What is the definition of pressure?

• pressure = force/area

• pressure = area/force

• pressure = force x area

• pressure = force/area^2

Standard temperature is exactly ___.

• 273°C

• 100°C

• 0°C

• 0 K

Standard pressure is the pressure exerted by a column of mercury exactly ___.

• 760 mm high

• 273 mm high

• 760 cm high

• 1.00 m high

If the height of mercury in a barometer at 0°C is less than 760 mm Hg, then:

• the atmospheric pressure is less than standard atmospheric pressure.

• the atmospheric pressure is greater than standard atmospheric pressure.

• the atmospheric pressure is equal to standard atmospheric pressure.

• the atmospheric pressure cannot be determined.

If the temperature of a fixed quantity and volume of gas changes, what also changes?

• pressure

• density

• mass

• formula

To study the relationship between the temperature and volume of a gas, which factor must be held constant?

• elasticity

• fluidity

• kinetic energy

• pressure

If the temperature of a fixed quantity of gas decreases and the pressure remains unchanged, what happens to its volume?

• its volume increases.

• its volume is unchanged.

• its volume decreases.

• its density decreases.

Suppose the temperature of the air in a balloon is increased. If the pressure remains constant, what quantity must change?

• volume

• number of molecules

• compressibility

• adhesion