Definition of eject. 1  transitive verb. 2  1a : to throw out especially by physical force, authority, or influence ejected the player from the gameb : to evict from property. 3  2 : to throw out or off from within ejects the empty cartridges.
Aluminum is reactive and will react spontaneously with water and/or air to form aluminum oxide. Aluminum oxide, Al2O3, forms a stable passive layer that protects aluminum from corrosion or further oxidation. This layer is about 4 nm thick and will provide corrosion protection as long as this oxide layer is stable.
The surface of aluminum metal is covered with a thin layer of oxide that helps protect the metal from attack by air. So, normally, aluminum metal does not react with air. If the oxide layer is damaged, the aluminum metal is exposed to attack. Aluminum will burn in oxygen with a brilliant white flame to form the trioxide aluminum(III) oxide, Al2O3. Aluminum metal is obtained from the pure hot molten Al2O3 by an electrolytic method.