___ is a a volatile flammable mixture of hydrocarbons derived from petroleum and used mainly as a fuel for automobiles.
___ is a viscous liquid derived from petroleum and used as a fuel or lubricant.
___ is a slippery or viscous liquid or liquefiable substance not miscible with water.
A ____ is a device that delivers an electric current as the result of a chemical reaction.
____ is a fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period.
____ is a substance that can be consumed to produce energy.
A _______ is a device that produces electricity.
________ is a a flammable hydrocarbon oil used as fuel in lamps and heaters.
________ is a volatile flammable mixture of hydrocarbons.
________ is wood used for fuel.
________ is a carbonaceous material obtained by heating wood or other organic matter in the absence of air.
