Page 10 - Demo

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HEAT & THERMODYNAMICS
Conductometer
Investigate how different types of metals conduct heat as you hold the center of the conductometer over a flame. Small amounts of wax placed in wells at the end of each metal rod melt at different rates demon- strating the relative thermal conductivity of each metal. The five metal rods are steel, nickel (or iron), aluminum, copper and brass. Plastic handle and instructions are provided.
AP9212 I $21.05
Linear Expansion Demonstration
A new twist to an old classic! Demonstrate both linear and volume expansion and contraction with this simple device. At room temperature, the metal rod fits between the metal bracket and into the drilled-out holes. However, when the metal rod is heated, it no longer fits. Reverse the process by plung- ing the metal bracket into ice-cold water.
AP7113 I $19.10
Ball and Ring Apparatus
Perform the classic “thermal expansion of metal” demonstration with this ball and ring apparatus. Brass ball passes freely through ring at room temperature, but when the ball is heated in a flame, it no longer passes through the ring. Nonconductive handle provides excellent thermal insulation and keeps hands cool.
AP9031 I $16.75 Shop with
confidence at
flinnsci.com.
Heat and Temperature—Student Laboratory Kit
At rotating activity stations, students compare metal thermal conductivity, investigate specific heat and calorimetry, study infrared radiation heat transfer, explore heat absorbing and heat-reflecting properties and determine relative humidity to validate evaporation as a heat-removal method. Ball and ring apparatus demonstration shows expansion and contrac- tion of metals in different temperatures. Includes instructions and Teacher Notes.
AP7017 I Student Laboratory Kit I $121.50 AP5372 I Infrared Lamp and Reflector I $48.90
Convection/Ventilation Box
Help students understand the concept of convection currents with this very visual demonstration. Place a lighted candle under one chimney, then use a smoke source (AP6015) over the other chimney to reveal the flow of convection currents. Ventilation can also be shown by covering the chimneys and removing corks.
AP6028 I Convection/Ventilation Box I $80.80 AP6015 I Touch Paper Smoke Source I $15.15
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FLINN SCIENTIFIC I HEAT & THERMODYNAMICS