“Vinegar Battery”
INTRODUCTION
We all know that the world is now facing an energy crisis and everyone is trying to do something about that. I noticed in our electricity bill that we are paying much for it. So, I came up with this investigatory project as an alternative source of electricity. This is simple and can be homemade. . Now you can show everyone that electrical energy or electricity can be made from air and vinegar. After all, vinegar are freely available everywhere. Also, this will be useful if there is brownout and science model for elementary students like me.
First, we need to get the material for the project. Here is the list: 1. A miniature board to mount the miniature base – it can be a piece of thick plywood. 2. Plastic container small 3. Miniature light bulb (low voltage, low current) 4. Pair of insulated solid copper wire 5. 2 Pair of alligator clips 6. Galvanized nails – (zinc electrodes) it can be found in hardware stores. 7. Copper wires – (copper electrodes) 8. Screws for the miniature base 9. Vinegar – 4% acidic solution
Procedures:
1. Remove the plastic insulation of about one inch from both ends of the wires. 2. Connect the end of red wire to red alligator clips for both ends. Do the same for the black wire with the black alligator clips. 3. Loosen the screws on both contacts of the bulb holder. Place one end of the red alligator clip on right screw and connect the black alligator clip on the left screw. Secure and tighten the screws. 4. Screw the light bulb on the miniature base. 5. Connect the other end of the red alligator clip to the copper electrode. 6. Connect the other end of the black alligator clip to the zinc electrode. 7. Put the vinegar on the container with a minimal amount of the liquid. 8. Put a scotch tape on the top of the plastic container that will serve as the lid and insert the nails and wires on both sides. Make sure that the nails and wires are not touching each other when inserted on the container. 9. If the amount of electricity is sufficient, you now have light. 10. Create a second set of vinegar battery if the bulb is not lighting. (Try to know how many voltage the bulb has so you can estimated how many set do you need to make. Also, check how many ampere for one set using the multi-tester.)

CONCLUSION:
In my first attempt, it did not work because the amount of electricity is not sufficient. The voltage of the bulb is 3.5 and per set is 1.75 ampere. So, I needed to make two sets of vinegar battery or instead of the bulb it can be use to a simple calculator to power up. Also, I had a problem getting the nails since some hardware store doesn’t know what galvanized nail is. I found out that food which have high acidic level can be use to create energy or electricity like lemon & potato.

RECOMMENDATION:
This project aims to provide alternative source of simple electricity. Therefore, I recommend exploring more for potential alternative source of electricity like this one. Also, teach students how to conserve electricity.