The Ideal Gas Law: Crash Course Chemistry #12

What happens to the pressure inside a balloon if its volume is decreased, assuming the temperature and amount of gas remain constant?

• The pressure decreases.

• The pressure increases.

• The pressure stays the same.

• The pressure first decreases then increases.

Which equation correctly represents Boyle's Law, assuming constant temperature and amount of gas?

• P / V = k

• P + V = k

• P * V = k

• P - V = k

Who was primarily responsible for the experiments that led to the discovery of the relationship between pressure and volume of a gas, which later became known as Boyle's Law?

• Robert Boyle

• Richard Townley

• Henry Power

• Both Richard Townley and Henry Power

Which three individual gas laws are combined to form the Ideal Gas Law (PV = nRT)?

• Boyle's Law, Newton's Law, and Avogadro's Law

• Charles's Law, Boyle's Law, and Avogadro's Law

• Dalton's Law, Charles's Law, and Boyle's Law

• Gay-Lussac's Law, Avogadro's Law, and Newton's Law

What causes a balloon to stay inflated?

• The rubber material stretching.

• Molecules inside the balloon bouncing against its inner walls.

• The air outside the balloon pushing inwards.

• The heat generated by the air inside.

What is the SI unit for pressure?

• Atmosphere (ATM)

• Kilopascal (kPa)

• Pascal (Pa)

• Pounds per square inch (PSI)

If the volume of a gas decreases while the number of particles and temperature remain constant, what happens to the pressure?

• It increases.

• It decreases.

• It stays the same.

• It becomes zero.

In the can crushing experiment, what force ultimately crushes the can?

• The cold temperature of the ice water.

• The condensation of water vapor inside the can.

• The external atmospheric pressure.

• The weakening of the can's metal due to heating.