Honors Chemistry Gas Laws Test 2025

Match each item with the correct statement below.

• Gay-Lussac's Law

• PV = nRT

• 1. Boyle's Law

• The rate at which a gas will effuse is inversely proportional to the square root of the gas’s molar mass

• Ideal Gas Law

• 1. For a given mass of gas at constant temperature, the volume of a gas varies inversely with pressure.

• Graham's Law

• The pressure of a gas is directly proportional to its Kelvin temperature if the volume is kept constant.

• Dalton's Law

• At constant volume and temperature, the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the component gases.

How does the gas propellant move when an aerosol can is used?

• From a region of low pressure to a region of equally low pressure.

• From a region of high pressure to a region of low pressure.

• From a region of low pressure to a region of high pressure.

• From a region of high pressure to a region of equally high pressure.

If a balloon is squeezed, at constant temperature, what happens to the pressure of the gas inside the balloon?

• It decreases.

• It stays the same.

• It increases.

• The pressure depends on the type of gas in the balloon.

As the temperature of a gas in a balloon decreases, at constant pressure, which of the following occurs?

• The volume of the balloon decreases.

• The average kinetic energy of the gas decreases.

• The density of the system decreases.

• Two of the above choices are true.

Tags

NGSS.HS-PS3-2

The volume of a gas is reduced from 16.0 L to 2.0 L while the temperature is held constant. How does the gas pressure change?

• It increases by a factor of four.

• It decreases by a factor of eight.

• It increases by a factor of eight.

• It increases by a factor of four.

If a balloon is heated, what happens to the volume of the air in the balloon if the pressure is constant?

• It stays the same.

• It increases.

• It decreases.

• The change cannot be predicted.

As the temperature of a gas in a rigid container increases, the pressure will _____

• Vary inversely

• Decrease

• Not change

• Increase

The combined gas law relates which of the following gas variables:

I. Pressure II. Volume III. Temperature

• I only

• I and III only

• I, II, and III

• I and II only

Under what conditions of temperature and pressure is the behavior of real gases most like that of ideal gases?

• Low temperature and low pressure

• High temperature and low pressure

• Low temperature and high pressure

• High temperature and high pressure

A breathing mixture used by technical SCUBA divers called Trimix contains helium, oxygen and nitrogen. What is the partial pressure of oxygen if the total pressure of the mixture is 101.4 kPa and the P_He = 82.5 kPa and the P_N2 = 0.4 kPa?

• 256 kPa

• 19.3 kPa

• 18.5 kPa

• 101. kPa