Getting Hot (with Thermal Imaging)

Many chemical reactions release heat. These reactions are also called exothermic reactions. With the help of an infrared thermal camera, we can visualize the temperature change during these reactions. In this film, we show 5 exothermic processes captured with a normal and a thermal camera, including the dissolving of sodium hydroxide, the dilution of concentrated sulfuric acid, the hydration reaction between concentrated sulfuric acid and paper, the neutralization reaction between hydrochloric acid and sodium hydroxide solution, and finally the reaction between sodium metal and water. (Photography: Yan Liang)

Teachers can download a Worksheet for using this film in classrooms.

 
 
Sodium hydroxide dissolving in water

Sodium hydroxide dissolving in water

Concentrated sulfuric acid added to water

Concentrated sulfuric acid added to water

The neutralization reaction of hydrochloric acid (left) and sodium hydroxide solution (right)

The neutralization reaction of hydrochloric acid (left) and sodium hydroxide solution (right)

Sodium metal in water

Sodium metal in water