Key Words 2 Flashcards
Electrolysis
Passing a direct electrical current through an electrolyte to decompose it
Ore
Rock from which a metal can be extracted for profit
Element
Substance that cannot be split into simpler substances
Erosion
Removal or transportation of broken up rocks
Ethanol
A fuel made by processing sugar beet or sugar cane
Fineness
A measure of the purity of gold in parts per thousand with thousand being the most pure
Fuel cell
A device which produces electricity from hydrogen and oxygen without burning
Granite
Igneous rock with relatively large crystals formed when magma cools and solidifies slowly
Hydrocarbon
A compound contains hydrogen and carbon atoms only
Incomplete combustion
Combustion that occurs without enough oxygen to completely oxidase all the fuel, for hydrocarbons it produces carbon dioxide carbon monoxide and soot
Substance which does not dissolve in a given solvent
Insoluble
Ion
An atom that has become electrically charged
Lava
Molten rock on the earth’s surface
Magma
Molten rock cooled inside the earth’ surface
Limestone
Sedimentary rock mostly calcium carbonate made from the remains of marine organisms