Ch. 15 & 16

solid, combustible mixture of organic compounds with 30-98% carbon by weight, mixed with various amounts of water and small amounts of oxygen, sulfur, and nitrogen

natural gas under pressure which remains clear, odorless, and non-corrosive

gooey liquid consisting of mostly hydrocarbon compounds and small amounts of compounds containing oxygen sulfur and nitrogen

products pf partial or complete decomposition of plants and animals; occurs as crude oil, coal, natural gas, or heavy oil as a result of exposure to hear and pressure in the earth’s crust over millions of years

heat transferred from earth’s underground concentrations of dry, wet steam, or hot water trapped in fractured or porous rock

an electrochemical cell in which the energy of a reaction between a fuel such as liquid hydrogen, and an oxidant such as liquid oxygen is converted directly and continuously into electrical energy

a colorless, odorless flammable gas that is the main constituent of natural gas

a crystalline structure consisting of ice that contains interstitial methane

underground deposits of gases consisting of methane gas and small amounts of heavier gaseous hydrocarbon compounds

deposit of a mixture of clay, sand, water, and varying amounts of tar like heavy oil known as bitumen

part of a metal-yielding material that can be economically extracted from a mineral

chemicals obtained by refining crude oil; used as raw materials

device that converts radiant solar energy directly into electrical energy

slow-flowing, dark brown, heavy oil obtained when kerogen in shale oil is vaporized at high temperatures and then condensed

direct radiant energy from the sun and a number of indirect forms of energy produced by the direct input of such radiant energy

synthetic gaseous and liquid fuels produced from solid coal sources other than natural gas or crude oil

energy obtained by harnessing the energy of the wind

gases or liquid fuels from plant material