Chemistry

Calories! Food has calories, but can a metal or other object have calories too? Introduce your students to the basics of calorimetry with this hands-on specific heat activity! Raise your students' interest and curiosity as they see how calories can b...

Instant cold packs are familiar first aid devices used to treat injuries. Why does the cold pack feel cold? How much heat is absorbed when the cold pack solid dissolves? In this inquiry-based lab activity, students analyze a cold pack, design a calor...

Heat in? Heat out? Which is it? Introduce students to the energy changes that take place during exothermic and endothermic chemical reactions. In this lab activity, students perform three separate reactions-including both neutralization and dissolvin...

An intense flame, blinding light, and searing heat-magnesium burning in air is a dazzling reaction. But how much heat is produced when magnesium burns? In this advanced-level microscale experiment, students use an indirect method and Hess's Law to de...