ants123456789 posted: " One day, I encountered a blackout in my house, that means I had total lost connection of electricity from town supply. Next, thing to happen, my mobile phone battery was drying up soon. Where can I charge my mobile phone or a backup battery to be use"
One day, I encountered a blackout in my house, that means I had total lost connection of electricity from town supply. Next, thing to happen, my mobile phone battery was drying up soon. Where can I charge my mobile phone or a backup battery to be used? I wondered this and learning in my Science lesson the chemical reaction that help to use to provide a battery. Let find out and have fun.
lemon juice cartoon
Lemon Battery
Remember that Alessendro Volta the inventor of Battery using chemical reaction between two electrodes (one made of copper, the other of zinc will generate a steady current.
The slacking plates of copper and zinc is separated by card board soaked in salt and water.
Our experiments will need the following:
We will use Lemons or squeeze bottle of pure lemon juice.
Copper-plated coins such as US pennies
One-inch zinc plated steel brackets from hardware store.
Test leads with alligator clops at each end
Low-current LED for a reminder of the difference between generic and low-current LEDs.
lemon squeeze
What's an Electrolyte?
Whether you know what they are or not, your body uses electrolytes constantly to transmit the electrical impulses that make life possible.
An electrolyte is a fluid that contains free ions.
They can come from dissolved salts or from acids that donate free positively charged hydrogen atoms – protons – to solution.
Because the ions can move around freely, they gravitate toward a source of opposite charge and away from a source of like charge.
Electrolyte Lemonade
Setup
Battery is an electrochemical device which base on chemical reactions to create electricity.
Lemon juice is made of citric acid that in citrus fruits is an electrolyte that allows electricity to flow between electrodes made from dissimilar metals.
Pennies are not made of copper anymore, but they are still plated with a thin layer of copper.
Make sure the pennies are not dull and oxidized for the experiment.
Zinc is used for galvanized in small steel brackets which can be found easily.
Lemon Test Experiment
Cut the lemon in half and push penny into it,
Near the penny, push galvanized bracket into lemon.
Measure the voltage for the 2 metallic. It should be near ~1VDC.
This may be not enough to power a LED, you may need 3 lemons setup to be chained connected to power up.
lemon test experiment
In summary, this is a simple and fun kitchen experiment for kids to try to work on to understand the science of electricity.
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