batteries
DESCRIPTION
Batteries. The first battery. Research that lead to the development of the battery was AN ACCIDENT! 1780’s Luigi Galvani Studying a frog. Brass hook to hold the leg in place Other end of hook touched an iron railing The leg twitched! “Animal Electricity”. The first battery. - PowerPoint PPT PresentationTRANSCRIPT
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BATTERIES
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LEMON POWER!!!
Watch the demonstration!!!
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THE FIRST BATTERY• Research that lead to the
development of the battery was AN ACCIDENT!
• 1780’s• Luigi Galvani
• Studying a frog.• Brass hook to hold the leg
in place• Other end of hook touched
an iron railing• The leg twitched!
• “Animal Electricity”
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THE FIRST BATTERY• Alessandro Volta
• Argued the electrical effect was from a chemical reaction!
• Chemical Reaction• A process which substances
change into new substances with different properties.
• Layered Zinc, Paper soaked in saltwater, and silver.
• Chemical energy• Energy stored in chemical
compounds
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ELECTROCHEMICAL CELLS• Electrochemical cell• A device that transforms
chemical energy into electrical energy• Consists of…• Two different metal
electrodes• Immersed in a
substance called an electrolyte (It conducts the current)
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WET CELL• Wet cell• Electrochemical cell
where the electrolyte is a liquid
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DRY CELL• Dry cell• Electrochemical cell
where the electrolyte is a paste
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BACK TO THE LEMON…How does the lemon power the clock?
What kind of battery is it?
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AS THE OLD SAYING GOES…
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REVIEW• Luigi Galvani stumbled across the concept that lead to the
battery when he…
1. Was discussing Animal Electricity with some fellow scientists.2. Was dissecting a frog.3. Scooting across the carpet in wool socks.4. None of the above.
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REVIEW• Alessandro Volta built the first battery by…
1. Tying a piece of metal to a flying kite during a thunderstorm.2. Placing a crank on a machine that turns a magnet creating a circuit.3. Layering zinc, paper soaked with salt water, and silver.4. None of the above.
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REVIEW• A wet cell is…
1. An electrochemical device that uses a liquid for the electrode.2. An electrochemical device that uses a paste for the electrode.3. An electrochemical device that uses a liquid for the electrolyte.4. An electrochemical device that uses a paste for the electrolyte.
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REVIEW• A dry cell is…
1. An electrochemical device that uses a liquid for the electrode.2. An electrochemical device that uses a paste for the electrode.3. An electrochemical device that uses a liquid for the electrolyte.4. An electrochemical device that uses a paste for the electrolyte.