Unit 9 (Ch 13) Vocabulary

What does a barometer measure?

• Temperature

• Humidity

• Atmospheric pressure

• Volume

What is another name for torr?

• Pascal

  (Pa)

• Millimeters of mercury

  (mm Hg)

• Atmosphere

  (atm)

• Newton per square meter

  (N/m²)

How many mm Hg is equivalent to one standard atmosphere?

• 500 mm Hg

• 760 mm Hg

• 990 mm Hg

• 800 mm Hg

What is the SI unit of pressure?

(equal to one newton per square meter)

• Atmosphere

• Torr

• Pascal

• Bar

According to Boyle’s Law, what happens to the pressure of a gas when the volume increases at constant temperature?

• Pressure increases

• Pressure decreases

• Pressure remains the same

• Pressure doubles

What temperature is defined as absolute zero?

• 0 degrees Celsius

• –273 degrees Celsius

• –100 degrees Celsius

• 100 degrees Celsius

Which law states that the volume of a gas is directly related to its temperature at constant pressure?

• Boyle’s Law

• Charles’s Law

• Avogadro’s Law

• Dalton’s Law

What does Avogadro’s Law state?

• Volume is inversely proportional to pressure

• Volume is directly proportional to temperature

• Equal volumes of gases contain the same number of particles

• Total pressure is the sum of partial pressures

What is the universal gas constant (R) in L·atm/K·mol?

• 8.314

• 0.08206

• 101.325

• 760

In the ideal gas law (PV = nRT), what does 'n' represent?

• Pressure

• Volume

• Moles of gas

• Temperature