Chemical & Physical Properties

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  1. Ball and Ring Apparatus Item # 33-0630
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    This brass ball fits easily through the matching ring when they are both at room temperature. Heat the ball in a flame, and experience the results of thermal expansion. Read More
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  2. Crystal Growing Kit Item # C1-3150
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    Observe how crystals grow from solution and how they acquire their symmetrical shapes and sparkling surfaces. Each Classroom Kit contains 30 sets of pre-mixed crystal growing chemical (5 each of 6 types) and 48-page teacher's manual. Read More
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  3. Assorted Density Block Set Item # P1-1010
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    Equal volume set. One cube each of aluminum, brass, copper, iron, lead, and zinc. 20mm cubes in storage case. Read More
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  4. Density Rod Set Item # P1-1020
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    Use this discrepant event to test students' understanding of density, buoyancy, and thermal expansion! The aluminum rod floats in cool water and sinks in warm. The PVC rod does the reverse and sinks in cool and floats... Read More
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  5. Ice Melting Blocks - Thermal Conductivity Item # P6-7060
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    Cool experiment kit! Touch these two black blocks, and one feels cooler. This discrepant event introduces many concepts, including heat transfer, change of state, and thermal conductivity.

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  6. Compound Bar Item # P6-7070
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    Thin strips of two different metals are laminated together in this simple demonstration, also known as a Bimetallic Strip. Demonstrate thermal expansion.

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  7. Thermal Conductivity Bars Item # P6-7090
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    Study heat conductivity in different metals. Observe the temperature gradients along the metal bars, and watch them evolve. Rate of conduction of heat can be measured by the mounted strip thermometers. Read More
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  8. Aluminum Density Determination Set Item # P1-1100
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    Set includes 12 samples of aluminum. Students learn that the density of a substance is constant even as its mass and volume change.

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  9. Density Identification Set Item # P1-1110
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    Students identify each of 12 different samples by determining their density. Each cylinder varies in size (volume) and density, but has the same diameter of 1/2”.

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