Explains chemical changes, which occur when two or more materials combine to form new substances. It describes various examples of chemical changes, such as burning wood, digestion, and ...

The ban on burning wood began Christmas Day and was extended Thursday until 11:59 p.m. Friday, according to the South Coast Air Quality Management District.

Investigate factors which affect the speed of a chemical reaction and calculate the time taken for the reaction to occur in National 5 Chemistry.

The Drax Power Station in Drax, England is Britain's largest power plant. The former coal plant now produces power by burning wood pellets produced at mills in Louisiana and Mississippi.