How to make a calculator work with a homemade battery

Question: Can you make a calculator work with a homemade battery?

Hypothesis: The vinegar will react with the wire and the galvanised nail to make electricity to charge the calculator.

Equipment: 2 galvanised nails, 2 bits of of masking tape, 1 marker, 3 wires, 2 cups, White Vinegar and a battery powered calculator.

Method: 1.The two cups are filled with vinegar and tape is put over the cups,it is pierced and marked positive and negative. 2.The nails are put into the negative end of the tape and a wire is put into the positive end and the other end of the wire is tied around the nail on the other cup. 3.Another wire is tied around the last nail and the last wire is put into the last positive hole and both wires are put into each end of the battery place in the calculator.

Observation: When the wires are hooked up to the calculator it turns on.

Explanation: The calculator worked because when the nail and the wire went into the vinegar it created negative and positive particles and the negative particles went through the wires and into the calculator and turned it on.

Crazy Currents by TC.

Question: Where is the gas formed during the chemical reaction of vinegar and baking soda and how we can see this.
Hypothesis: The gas is formed as bubbles inside the mixture.
Equipment: Baking Soda, Vinegar, Sultanas, Measuring Spoon and Containers.
Method:
1) The vinegar is poured into the container.
2) The sultanas are added.
3) The baking soda is sprinkled into the container.
Observation:
1) Bubbles are formed when the vinegar and baking soda is mixed.
2) The sultanas traveled to the top of the bubbles and then down.This is repeated until all the bubbles have diapered.

Explanation: The sultanas moved to the top because of Carbon Dioxide formed under the sultanas and then pushed to the top.At the top the bubbles popped and released gas causing the sultanas to fall.This process is repeated until there is no more bubbles.

This Proves: The gas is formed as bubbles inside the mixture.P.S the the gas Carbon Dioxide, scientists call it CO2.

Crazy Currents, by V.S.

Question
Where is the gas formed and how can we see this during the chemical reaction of vinegar and baking soda?

Hypothesis
This gas is formed as bubbles inside the mixture.

Equipment
Baking soda
Vinegar
raisins/sultanas
measuring spoons
container

Method
1. The vinegar is poured into the container.
2. The baking soda is sprinkled in the vinegar.
3. The sultanas are added.

Observation
1. The bubbles formed when the baking soda and vinegar mixed.
2. The sultanas travelled to the top of the vinegar and then down. This repeated until the bubbles disappeared.

Explanation
The sultanas moved to the top because the bubbles of Co2 formed under the sultanas & pushed them to the top. At the top, the bubbles popped & released gas, causing the sultanas to fall. This process repeated until there were no more bubbles. This proves that when you mix baking soda and vinegar, the gas is formed as bubbles inside the mixture.