P.S.
I got some Zinc bar anodes for a tank we refurbished at work several years back.
Every 2 years or so I slice off about 3\4" thick slabs and bury them around the drip line.
Pecan trees really like that stuff!
@shucker1
Take about a tablespoon of zinc shavings, drop them into a strong glass bottle, like a wine bottle or champagne bottle, into which you have previously poured about 1/2 cup of muriatic acid (pool acid or brick etching acid). Don't use full-strength acid, works too fast. Quickly stretch the neck of a toy balloon, round one, not too tiny, onto the bottle neck. It must be tight, so the gas pressure blows up the balloon. Stop before balloon is too tightly stretched, tie the neck off, handle balloon carefully.
Tie it to some stationary thing, so it can't rise up to the ceiling. Use a stick perhaps 3 feet long, attach a wooden match to the end, I drill a tiny hole, press the match in. Light the match and slowly bring it close to the balloon.
The balloon will explode with a WHUMP, throwing pieces of itself around. Pick one up and look closely: YOU HAVE MADE WATER!
The balloon fills with hydrogen gas, which burns explosively with air, to form water. I did this in my Algebra II class to liven things up: few minutes later, the Principal (my boss), walks in, says they figured it had to be me: claimed they felt the building reverberate!
(Send me some of your zinc!). imp
