Unburned

Examples

• That some unburned carbon is present in a flame is shown by the fact that whenever a cold object is held in the flame, it becomes smoked or covered with soot. Bertha M. Clark. General Science.
• Sand should abound in the clay in a certain proportion, or be mixed therewith, otherwise the clay, whether burned or unburned, will crumble. William Henry Doolittle. Inventions in the Century.
• If the quantity of air is insufficient, the carbon particles remain unburned and form soot. Bertha M. Clark. General Science.
• If a cold object is held in the bright flame of an ordinary gas jet, it becomes covered with soot, or particles of unburned carbon. Bertha M. Clark. General Science.

Typist: Sean