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How Do Different Cations and pH Affect Bean Growth
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Grade Level:
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4
thru
8
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Category:
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Botany
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Awards Won:
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Hypothesis:
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The higher the pH, the poorer the beans would grow, therefore the beans would grow worst in the sodium solution and best in the calcium solution.
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Primary Materials Used:
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Pinto and Great Northern Beans, 4-Quart Plastic Tubs, PVC Pipe, Plastic Needlepoint Cloth, Distilled Water, Sprayer, Sodium Hydroxide, Potassium Hydroxide, Calcium Hydroxide, pH Paper, Disposable Gloves, Aquarium Gravel, Scale
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Details:
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Using various combinations of chemicals and distilled water, the student prepared different watering solutions with different pH levels which she used to water the beans. Sets of beans were placed in 13 vats, each with a unique water and chemical solution. After 40 days, the bean plants were removed and weighed to see the effects of each condition. After analyzing the data, the hypothesis was proven partially correct.
This is an excellent science fair project, complete with graphs, pictures, sources, etc.
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Click Here to see the complete free science fair project "How Do Different Cations and pH Affect Bean Growth".
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