Your Safer Source for Science
All-In-One Science Solution
Your Safer Source for Science
;
Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Fax
Email [email protected]

Measuring Energy Changes: Heat of Fusion—ChemTopic™ Lab Activity

firewatch

Physical changes of state and chemical reactions may be either exothermic or endothermic. Exothermic reactions release heat to the surroundings while endothermic reactions absorb heat from the surroundings. With the Measuring Energy Changes: Heat of Fusion—ChemTopic™ Lab Activity, determine the temperature and heat changes that occur when ice melts. Obtain a heating curve by melting ice in a beaker on a hot plate, measuring temperature as a function of time, then determine the heat of fusion of water (the heat required to melt ice).

Concepts

  • Heat vs. Temperature
  • Heat of Fusion
  • Enthalpy Change
  • Exothermic vs. Endothermic
  • Heat of Vaporization