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Your Safer Source for Science
Address P.O. Box 219 Batavia, IL 60510
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Item #: PF2001 

Price: $20.00

In this lab experience, students determine how much energy is released when an object burns to measure the heat flow from the object to its surroundings, introducing the concept of calorimetry and investigating the caloric content of organic fuels. Students should come to understand that different fuel sources have different chemical compositions and therefore different chemical structures. When a fuel burns, the bonds that hold its constituent atoms together break on the reactant side of a chemical equation and then reform on the product side of a chemical equation. This process results in the release or absorption of energy. We can calculate the amount of energy associated with a chemical reaction by indirectly monitoring its temperature (i.e., the temperature of water the reaction is used to heat). Students should recognize that despite evidence to the contrary (e.g., the burning of charcoal or ethanol), mass is not destroyed in a chemical reaction, only transformed.

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Product Details

Safety: Before conducting the lab, review with the class the safety precautions on the student page. Then discuss any safety precautions that are specific to your science laboratory or classroom. Good ventilation is required since burning fuels can generate a large amount of smoke. Allow some time between trials so the smoke has time to dissipate.

Materials Included in Kit

Aluminum foil, roll
Charcoal, 90 g
Wood splints, package of 100

Additional Materials Required
Flinn Scientific Electronic Balance, 410 x 0.01-g, 10
Butane Safety Lighter, 10
Cylinder, Borosilicate Glass, 50 mL, 10
Ring Support, with Rod Clamp, 4", 10
Stirring Rods, Glass, 10
Support Stand, 6" x 9", 10
Flinn Digital Thermometer, 10