Unit Review

Question 1 of 20

The reaction illustrated in this equation is the first step in the production of _______.

A. Methanol

B. Propane

C. Jet fuel

D. Ethanol

Question 2 of 20

The lower the energy density of fuel per unit of volume, ______ on a given volume of fuel.

A. The less distance a vehicle can travel

B. The more distance a vehicle can travel

C. The faster a vehicle can travel

D. The slower a vehicle can travel

Question 4 of 20

Advantages of using alternative fuels include ___________________.

A. Reducing U.S. dependence on imported crude oil

B. Reducing air pollution

C. Less frequent engine maintenance

D. All of the above

Question 5 of 20

Which of the following is not derived from fossil fuel?

A. Propane

B. Natural gas

C. Methanol

D. Ethanol

Question 6 of 20

The world's leading ethanol producer is Brazil, where billions of gallons of fuel ethanol are produced from sugar cane each year. The U.S. uses other sources to produce ethanol because ___________________.

A. The price of sugar is too high to produce ethanol economically in the U.S.

B. Other sources, such as corn, grow better in the northern hemisphere

C. Other sources that are more prevalent in the U.S. produce a higher grade of ethanol

D. Other sources, such as switchgrass, grow wild in U.S. grasslands

Question 7 of 20

The term cracking refers to _______.

A. Changing larger hydrocarbon molecules into smaller ones

B. Changing smaller hydrocarbon molecules into larger ones

C. Changing straight-chain hydrocarbons into branched ones

D. Adding oxygen atoms to hydrocarbons

Question 8 of 20

According to Boyle's Gas Law, when the pressure of a gas in an enclosed container increases, the volume of the gas ___________________.

A. Decreases

B. Stays the same

C. Increases

D. Pressure and volume are not related

Question 9 of 20

When propane in an enclosed container is transported from a cold location to a hot location, the propane molecules will __________.

A. Lose energy

B. Decrease in volume

C. Move closer together

D. Move faster

Question 10 of 20

According to Charles's Gas Law, when the temperature of a gas increases, its volume ______.

A. Decreases

B. Stays the same

C. Increases

D. Volume and temperature are not related

Question 11 of 20

If you paid the same price per gallon for gasoline you bought on a cold day and gasoline you bought on a hot day, you would:

A. Get a better deal on the hot day, because gasoline expands in volume as its temperature increases

B. Get a better deal on the cold day, because gasoline becomes denser as its temperature decreases

C. Get an equally good deal both days, because the increase in volume on the hot day would offset the increase in density on the cold day

D. There is no correlation between temperature and mass, only between temperature and volume

Question 12 of 20

If you pumped up an air mattress on a hot sandy beach, and then submerged it in cooler ocean water, _______.

A. The air mattress would deflate in proportion to the change in temperature

B. The air mattress would inflate in proportion to the change in temperature

C. The air mattress would deflate completely

D. The pressure inside the air mattress would stay the same

Question 13 of 20

This formula represents ___________.

A. The ideal gas law

B. Charles's gas law

C. Boyle's gas law

D. The relationship between two different vessels containing the same type of gas

Question 14 of 20

This experiment illustrates _________.

A. The ideal gas law

B. Charles's gas law

C. Boyle's gas law

D. How to measure the molar mass of a gas

Question 15 of 20

A 10-degree rise in temperature increases the volume of propane liquid by about 2 percent. To prevent releases of propane due to overexpansion, propane suppliers __________.

A. Only transport propane during the cooler hours of the morning or evening

B. Only fill propane tanks to 50 percent of capacity

C. Only transport propane when the temperature does not vary by more than 20 percent between the time a truck was filled and the time the propane is delivered

D. Allow for a 20 percent expansion factor when filling tanks

Question 16 of 20

According to the graph below, the relationship between volume and temperature is ____________.

A. Direct

B. Inverse

C. Reciprocal

D. Indeterminate

Question 17 of 20

This animation illustrates __________.

A. The direct relationship between pressure and volume

B. The inverse relationship between pressure and volume

C. That randomization is predictable

D. The concept of mass

Question 18 of 20

According to this illustration, which alternative fuel reduces combined CO and NOx emissions the most, compared to reformulated gasoline?

A. Regular gasoline

B. Compressed natural gas

C. Ethanol

D. Methanol

Question 19 of 20

The process of transesterification combines vegetable oil and methanol or ethanol to produce ___________.

A. Reformulated gasoline

B. Hydrogen

C. Biodiesel

D. E85

Question 20 of 20

Which fuel can be produced through electrolysis, from hydrocarbon fuel, or from biomass?