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Learning to Build Electrical Circuits with Multiple Components
Posted 20/02/2015 01:07PM


Fourth grade students applied their knowledge of chemistry to predict if some liquid solutions would conduct electricity. Students worked in pairs to make a circuit that would incorporate 2 metal leads inserted into various solutions to test their conductivity predictions. 

Lower school science teacher, Ms. Railey set out a selection of solutions in glass beakers at different stations around the lower school science lab, including: copper sulphate, water, oil, salt water, vinegar, isopropyl alcohol, baking soda in water, ammonium sulfate, and sodium hydroxide. At each station, there was also a battery, wires, crocodile clips, a light blub and metal leads ready to experiment with.

Through their observations students learned that some solutions were weak conductors, only resulting in sparking a dim light in the bulb, whereas solutions with a greater concentration of ions were strong conductors as noted by the bulb shining brightly. They also discovered the production of bubbles occurred on the metal leads when the substance acted as a conductor.

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