Making a Battery

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Lesson 2

• Making a Battery

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Objectives

• Build a battery
• Observe what happens when a battery operates
• Describe what makes up a battery

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Background

• Energy is the ability to do work.
• In this lab, you will see evidence of energy
  through a light bulb.
• Remember, energy comes in many forms and it can
  be transformed from one to another.

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How Batteries Work

• Negative terminal (electrode) made of metal
  such as zinc to accumulate electrons
• Positive terminal (electrode) made of metal
  such as copper to lose electrons
• Electrolyte solution or paste that separates
  into ions (positive and negative atoms)

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Dry Cell Battery
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The Reaction

• A chemical process (oxidation-reduction) causes
  one electrode to give electrons to the other
  electrode.
• The movement of electrons produces electric
  potential energy.
• The amount of electric energy is measured in
  volts.

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Task

• Follow the procedures beginning on page 14 of
  your lab manual.
• Record your observations on a sheet of paper.
• On the same paper, answer the reflection
  questions (complete sentences) on page 15.
• Draw and label your battery.

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Question

• What is a battery?

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Hypothesis

• A battery is a device that stores chemical energy.

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Materials

• Copper, zinc, copper sulfate solution, light
  bulb, blotter paper

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Procedure

• See pages 14-15 in the lab manual.

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Analysis

• See student observation sheet.

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Conclusion

• (write a brief description explaining how your
  battery created electrical energy and transformed
  it into light)

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New Questions

• What types of materials will produce the greatest
  electrical energy?

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Reading

• Batteries Electricity To Go

Alessandro Volta
Sir Humphry Davy
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Comparison

• Wet-Cell and Dry-Cell Batteries