High School Earth, Space, and Geophysical Curriculum Essentials May 2009 10. Boulder Valley School District High School Earth, Space, and Geophysical. Science Curriculum Essentials Document. If learning is to endure in a flexible, adaptable way for future use, then teachers must design units.
A curmudgeon with years of practice. Coal ash is the residue from burning coal and contains all of the nonvolatile components of he coal (carbon compounds, sulfur and some metals). The ash is made up of silicates, metals (including toxic metals like mercury and uranium) and some unburnt carbon.
Creosote is a tarry substance that forms when wood burns and is carried up the inside of a chimney as part of the smoke. The creosote collects on the inside of the chimney and traps carbon, usually soot, which is also part of the smoke from burning wood. The mixture dries and bakes against the inside of the chimney.