Video quiz

Explains how naturally occurring chemical elements are essential for life. Describes the atomic structure of elements and identifies how chemical compounds are made. Explores the elements found in the atmosphere and those used to enable space flight. Examines how noble gases can be used to create light, including the colored light found in electric signs. Also describes how graphite and diamonds are made from the same carbon elements and looks at the chemistry involved in creating fireworks.

Explores how chemistry is applied in the real world and introduces the nature of chemical reactions. Tours a crime lab to show how a forensic scientist uses chemical analysis to solve a crime. Examines how energy is created by chemical reactions and illustrates the physical dynamics of fuel cells and the burning of fuels. Also introduces the process of combustion, explaining how natural fires occur and highlighting the work of firefighters in extinguishing them. Concludes with an examination of smell as a chemical sense.