Lesson Summary. A ballad poem is a type of verse composed in ballad form and attributable to an authorial source. The ability to determine definite authorship is the key difference between these poems and the more traditional folk ballads.
Gasification is a flexible, reliable, and clean energy technology that can turn a variety of low-value feedstocks into high-value products, help reduce our dependence on foreign oil and natural gas, and can provide a clean alternative source of baseload electricity, fertilizers, fuels, and chemicals.
A gas evolution reaction is a chemical process that produces a gas, such as oxygen or carbon dioxide. In the following examples, an acid reacts with a carbonate, producing salt, carbon dioxide, and water, respectively. Nitric acid reacts with sodium carbonate to form sodium nitrate, carbon dioxide, and water: