The boys did 4 chromotography experiments, watching the marker colors bleed up the filter paper. The other boys' mom is a local vet and she does exactly this type of test to diagnose certain diseases in animals, so it was a fun sample of a real-world application!
To pep up the slow pace the dad got out a jar, filled it with apple cider vinegar, baking soda, dish soap and glitter, and the boys had a blast watching it ooze out and overflow. You could feel their imaginations catch fire!
Then we headed back to the chemistry kit and they used a battery, wires and lightbulb to light it up and tested the conductivity of various solutions. As they discovered, plain water does not conduct electricity, but salt water and sodium carbonate water do.
All in all, it was a fun 3 hours of science before we all dashed off to swim lessons!
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