This experiment discovers the chemical reaction that transpires when you activate a hand warmer and the time difference in heating up between a hand warmer exposed to air and one that is not.
What is in hand warmers?
How do hand warmers work?
Average amount of time it takes for a hand warmer to heat up?
Hand warmers provide instant heat on a cold day.
Two Reusable Hand Warmers
Scissors
Cup
Thermometer
Stopwatch