Science Projects That You Can Do With Lemons
Lemons can do some interesting things under the right conditions. They can float, become a battery, blow up balloons be or used to make invisible ink. These experiments are appropriate for all age groups, but an adult should always be around to help.
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Lemon Battery
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The lemon battery experiment is good for middle schoolers and older students. The idea is to turn a lemon into a working battery. The project requires a lemon, galvanized nails and a penny. By placing the nail into one side of the lemon and the penny into the other a single-cell battery is created. Students can learn how the lemon battery works and test how many lemons it would take to light a bulb.
Floating Lemon
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This experiment teaches a student why a whole lemon will float and a half lemon sinks. All the student needs is a deep container filled with water. Drop a whole lemon inside and watch it float. Cut the lemon in half and the halves will sink in the water. Students can try to guess why that happens. It happens because the lemon skin is waterproof and the water can't get inside. This simple experiment is good for young elementary students.
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Lemon Balloon
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The juice from a lemon can be used to blow up a balloon. This is a fun and simple science project for kids of all ages. Water, lemon juice and baking soda are poured into a soda bottle. A balloon is quickly placed over the opening of the soda bottle. The balloon will expand as the ingredients inside bubble and form carbon dioxide. Teachers can use this project to teach about chemical reactions and carbon dioxide gas.
Invisible Ink
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Lemon juice can be used as invisible ink. Mix some lemon juice with a little bit of water. Use the mixture to write a message on white paper with a small paint brush. After the words dry they will be invisible to the eye. The only way to see the message is to heat the lemon juice over a light bulb or small flame. Students will learn about oxidation and how it turns the lemon juice brown when heated.
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References
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