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- 1. Multiple Choice
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
- 2. Multiple Choice
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
- 3. Multiple Choice
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
- 4. Multiple Choice
Dalton's atomic theory began when he expanded the Law of Definite Proportions developed by ___
Joseph Priestley
Joseph Louis Proust
Antoine Lavoisier
Dmitri Mendeleev
- 5. Multiple Choice
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
- 6. Multiple Choice
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
- 7. Multiple Choice
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
- 8. Multiple Choice
Along with oxygen for breathing, which gas is included in scuba tanks to help prevent decompression sickness?
nitrogen
helium
carbon dioxide
hydrogen
- 9. Multiple Choice
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
- 10. Multiple Choice
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
- 11. Multiple Choice
The ratio of moles of the individual gases in a mixture to the total number of moles is called ___
fractional molarity
fractional distillation
the mole fraction
the empirical formula
- 12. Multiple Choice
Which little esoteric symbol to is used to represent the mole fraction?
the lower case Greek letter, chi
the upper case Greek letter, psi
the lower case Greek letter, upsilon
the upper case Greek letter, tau
- 13. Multiple Choice
The mole fraction of an individual gas equals the number of moles of that gas, divided by ___
the partial pressures of that gas
the total pressure of the gases
the total number of moles in the mixture
the molar mass of the gas
- 14. Multiple Choice
Through the ideal gas law, the number of moles is directly related to the pressure of gas it exerts, as long as ___
the volume and temperature remain constant
it's not at STP
it's at absolute zero
it's a real gas
- 15. Multiple Choice
By volume, what is the percentage of oxygen in the air that we breath?
about 21% oxygen
about 38% oxygen
about 62% oxygen
about 95% oxygen
- 16. Multiple Choice
What is the partial pressure of O2 in air at a total atmospheric pressure of 97.8 kPa?
about 15 kilopascals
about 21 kilopascals
about 32 kilopascals
about 63 kilopascals
- 17. Multiple Choice
When collecting a gas over water, the only problem is liquid water ___
is a liquid not a gas
is a polar molecule
gives off a small amount of water vapor
moves around a lot
- 18. Multiple Choice
In a glass of water, there's always going to be a few molecules with enough kinetic energy to ___
heat up the liquid
escape the liquid
start a chemical reaction
break the glass
- 19. Multiple Choice
The vapor pressure of water, which is the partial pressure of water vapor in the gas above it, is dependent on ___
the total pressure
the molar mass of water
the volume of the water
the temperature of the water
- 20. Multiple Choice
When collecting a gas over water, the total pressure in the column is equal to the pressure of the collected gas ___
plus atmospheric pressure
minus atmospheric pressure
plus the vapor pressure of the water
minus the vapor pressure of the water
- 21. Multiple Choice
The vinegar, in Hank's bottle, is an aqueous solution of ___
acetic acid
sulfuric acid
hydrochloric acid
nitric acid
- 22. Multiple Choice
The baking soda, used in Hank's experiment, is more properly called ___
cream of tartar
sodium bicarbonate
sodium chloride
potassium bitartrate
- 23. Multiple Choice
The acetic acid and sodium bicarbonate combine to form which gas?
oxygen
hydrogen
carbon monoxide
carbon dioxide
- 24. Multiple Choice
After finding the pressure of the carbon dioxide alone, the number of moles was found using ___
the Law of Partial Pressures
the Ideal Gas Law
the mole fraction equation
the Law of Multiple Proportions
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