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Progressive Homeschool
Welcome! We practice science-intensive evidence-based education.

Electric Potato Writing

Saturday, April 15, 2006
Q continues to experiment with electricity! We picked up this electricity-food project kit and did this experiment where you cut a potato in half, coated it with Phenol Red and salt, stuck a lead in it, connected the lead to a battery (9 V) and then wrote with another lead. Q took all of these pictures!

HS: electric potato writing - directions


HS: electric potato writing - battery


HS: electric potato writing - lead-1


HS: electric potato writing - lead attached to battery


HS: electric potato writing - pink writing


HS: electric potato writing - pink writing 2


Q didnt really like this project. She said this:

"The potato experiment was't very fun. It only lets you draw on a potato and it makes it rot in one hour. It was disgusting. I didn't like it. It really smelled bad. The electricity thingy popped out a lot. That makes it even yuckier. It faded in 1 minute. It was frustrating. I lost an alligator clip. I don't recommend this for anything."


So she didnt give it a big thumbs up!

The kit also had a project that had you use two lemons (we used grapefruits, had no lemons at the time) and make electricity.

grapefruit-1-jpg


It didnt work for us (the red LED didnt light up). Must not be acidic enough, will retry with lemons.

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