Partial Pressures & Vapor Pressure

The mixing of 300 adults at the White House dinner with 300 five-year-olds was ___

• a bad dream

• an analogy to do with gases

• based on a real event

• foreshadowing

In 1803, who used real science to figure out what atoms are and how they behave?

• Robert Boyle

• Albert Einstein

• John Dalton

• Johannes Diderik van der Waals

John Dalton, best known for introducing the atomic theory into chemistry, was ___

• an English teacher from France

• a French teacher from England

• an English teacher from Scotland

• a science teacher from England

Dalton's atomic theory began when he expanded the Law of Definite Proportions developed by ___

• Joseph Priestley

• Joseph Louis Proust

• Antoine Lavoisier

• Dmitri Mendeleev

Daltons's Law of Multiple Proportions says elements combine in ___

• simple, whole number ratios of their masses

• equal proportions by number

• equal proportions by mass

• only one way

While mixing gases, Dalton noticed that the total internal pressure of his container was always equal to ___

• the sum of the individual pressures of the gases

• the product of the individual pressures of the gases

• the pressure of the most abundant gas

• the pressure of the least abundant gas

The discovery that the total pressure of a mixture of gases is equal to the sum of the individual pressures is called ___

• Dalton's Law

• the Law of Summed Pressures

• the Law of Partial Pressures

• the Additive Property of gases

Along with oxygen for breathing, which gas is included in scuba tanks to help prevent decompression sickness?

• nitrogen

• helium

• carbon dioxide

• hydrogen

The pressure exerted by each gas individually, in the scuba tank, was found using ___

• Proust's Law of Definite Proportions

• the Law of Multiple Proportions

• the Law of Partial Pressures

• the Ideal Gas Law

The total pressure exerted by the gases in the scuba tank was found using ___

• Proust's Law of Definite Proportions

• the Law of Multiple Proportions

• the Law of Partial Pressures

• the Ideal Gas Law