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.
Signs of a Reaction - Gas Formation. The formation of a gas is the third sign that a reaction may have occurred. The formation of bubbles when two liquids are mixed usually indicates that a gas has formed. A gas can also be formed when a solid is added to a solution.