Gas Laws & Kinetic Theory

What is the definition of a gas according to the text?

• A phase of matter where atoms of a substance are in motion and fill their container.

• A liquid phase of matter where atoms flow freely.

• A plasma phase of matter with highly charged particles.

• A solid phase of matter where atoms are in fixed positions.

What are ideal gases based on?

• Particles in the gas are always at rest.

• The identity of the gas changes its physical properties significantly.

• Particles in the gas are dimensionless points in random motion and don't interact apart from elastic collisions.

• Particles in the gas have significant volume and interact in complex ways.

What does Boyle's law state about pressure and volume?

• They are directly proportional.

• They are inversely proportional.

• They are unrelated.

• They are only related at high temperatures.

According to Charles's law, how are volume and temperature related?

• They are directly proportional.

• They are only related at low pressures.

• They are inversely proportional.

• They are unrelated.

What is the Kelvin scale used for in gas calculations?

• To measure pressure.

• To avoid mathematical issues with negative or zero temperatures.

• To identify the type of gas.

• To calculate the volume of the gas.

What does Avogadro's law say about equal volumes of gas?

• They contain the same number of molecules at the same temperature and pressure.

• They always occupy 22.4 liters regardless of conditions.

• They contain the same number of molecules at different temperatures.

• They have different numbers of molecules at the same temperature and pressure.

How many moles of ideal gas occupy 22.4 liters at standard temperature and pressure?

• 1 mole

• 0.5 moles

• 2 moles

• 5 moles

What is the purpose of the ideal gas law?

• To identify the type of gas in a sample.

• To find the value of all four variables (pressure, temperature, volume, moles) at once.

• To determine the volume of a gas when the pressure changes.

• To calculate the pressure of a gas at constant volume and temperature.

What must you do to convert Celsius to Kelvin?

• Divide by 273

• Add 273

• Subtract 273

• Multiply by 273

What does the combined gas law combine?

• The ideal gas law and Boyle's law

• Avogadro's law and Boyle's law

• Charles's law and Avogadro's law

• Boyle's law and Charles's law