Chapter 15 Test Review

What are ethane and octane examples of?

• natural gas

• petroleum

• organic fuel

• biomass fuel

What fuel contains carbon compounds that were once part of a living organism?

• peat

• petroleum

• biomass fuels

• organic fuels

a fuel, such as wood, formed from the products of living organisms

• peat

• fuel

• biomass fuel

• petroleum

A brittle, brown plant material used as a fuel that contains a great deal of water and a low percentage of carbon.

• lignite

• peat

• anthracite coal

• bituminous coal

The conversion of organic materials into fuels.

• fossil fuels

• bioconversion

• lignite

• fuel

Fuel derived from the remains of organisms that lived long ago.

• fossil fuels

• fuel

• natural gas

a liquid fossil fuel; also known as crude oil

• coal

• natural gas

• petroleum

A compound made only of hydrogen and carbon

• carbohydrogen

• hydrocarbon

A soft, brown coal composed of 40% carbon

• anthracite coal

• bituminous coal

• lignite

Metamorphic rock that has been changed from sedimentary bituminous coal into hard coal that contains up to 95% carbon.

• lignite

• anthracite coal

• bituminous coal