In this Activity, students observe and compare the behavior of three lightsticks that are exposed to three different temperature ranges (cold, room temperature, and hot). The Activity could be used early in the school year to give students practice in making detailed observations and devising reasonable explanations for those observations. It illustrates the use of qualitative vs. quantitative observations. This Activity can also introduce a unit on chemical kinetics.
Journal Staff; 1999, 76, 40A.