Liquid Conductivity

Overview

Objectives/Goals To determine which solutions will conduct electricity the best, and why. Methods/Materials 1 miniature lamp holder; 1 9-volt battery snap connector; 1 9-volt battery; 1 9-volt screw based lamp; 2 flexible coated 13-inch wires; 1 cup with a 3-inch diameter and 2-3 inch depth; 2 small metallic 3x1 inch metallic weights; glue gun/glue; 3 small screws; 1 small washer; 1 soldering gun; 1 12x3.5in wooden plank; 1 tablespoon; 1 volt meter; water; salt; vinegar; baking soda; baking powder; lemon juice; cranberry juice. After setting up the electric circuit, I connected the voltmeter to it. From there, I poured in the different solutions, recorded all observations, and recorded the reading of the voltmeter. I repeated the procedure for all of the solutions. Results Water did not conduct very much electricity. Baking powder was able to conduct more electricity with a direct current of 147mA. Conclusions/Discussion I came to the conclusion that tap water alone can conduct electricity, but not very well. Acidic solutions were not the best conductors of electricity; baking soda was. This was because of the molecular bonds of the baking powder solutions. Because it had more ions, it created a greater amount of electric charge.

Competition history

• CSEF 2002 Chemistry · Entry J0522

Resources

• CSEF project summary ↗

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