The coin battery experiment : Fizzics Education

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# The coin battery experiment

You will need:

• One bowl of vinegar
• Nineteen strips of paper, 3cm square in size
• Ten ‘silver’ coins…it’s not really silver, it’s mainly Zinc
• Ten copper coins
• A test subject!
• Vinegar

1

Moisten the strips of paper in the vinegar

2

Stack together a column of coins and vinegar soaked paper, alternating between each material in the following order; copper coin, paper and silver coin.

3

Hold the column, on its ends, between your vinegar soaked fingers.

Feel a buzz?

4

#### Get the Electricity & Magnetism Unit of Work here!

• How does electricity actually flow?
• What makes magnets become magnetic?
• Why is there electromagnetism and what does this tell us about electricity & magnetism?
• From series & parallel circuits to conductors & insulators, there’s a lot to explore & learn!

Includes cross-curricular teaching ideas, student quizzes, a sample marking rubric, scope & sequences & more.

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### Why Does This Happen?

You just made a wet cell battery. A battery usually contains two types of metals separated by an acid. A chemical reaction between the two metals produces an electric current that continues until one of the metals is used up.

Idea: Use a multimeter to measure the current or voltage produced!

### Applications

You can find wet cell batteries in cars. But don’t experiment with them, the electricity within a car battery can be very dangerous.

### Variables to test

More on variables here

• Which combination of coins produces the biggest buzz?
• Try lemon juice as the acid instead of the vinegar. Does this make a difference?
• Try squares of filter paper, baby wipes, dishcloth or similar between the coins. Does this make a difference?