Gunpowder and dynamite contain certain substances which oxidize readily. The oxygen used for this oxidation is likewise a part of the gunpowder and the dynamite. It is stored in them in much the same way that oxygen is stored in potassium chlorate When the gunpowder or dynamite is “set off,” the oxidation takes place very rapidly. Gases are produced.
These gases take up hundreds of times more space than the powder did. Consequently the gases expand violently, causing an explosion. Such oxidation may be put to use in blasting masses of rock or the stumps of trees. It may also be the means of harmful destruction in war. Burning and explosions are examples of Dry iron rapid oxidation.
We all know about the frightful destruction of property and lives which rapid oxidation may cause during a battle. It is likely, however, that you are not familiar with many examples of slow oxidation, although these also are very common. The rusting of iron is a good example.