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Dish Soap Experiment Akimel A-al Middle School 6th grade Science

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Dish Soap Experiment Akimel A-al Middle School 6th grade Science

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    1. Dish Soap Experiment Akimel A-al Middle School 6th grade Science

    2. Why are soap bubbles round? The surface tension of the bubble's water wants to contract, and the sphere is the shape that holds the most volume within the smallest surface area.

    3. How do bubbles clean? Bubbles are more effective at cleaning than plain water because the hydrophobic end of the molecule attaches to grease. This allows water to seep underneath, which helps loosen the grease. When grease is loosened, it is bombarded by soap bubbles, which helps ensure that it won't attach to anything else.

    4. Lab Title Problem (question) Hypothesis (what you think will happen, based on experience and research If… then…) Independent Variable (one thing you change) Dependent Variable (what you measure) Materials (shopping list) Procedure (number each step) Data (data table or chart and written observations and pictures) Results – graph your data Conclusion Explain how your hypothesis was supported/not supported by the data from your experiment Identify any possible errors or factors that could have affected your experiment Discuss what you might do differently next time, what other related experiments you would want to do, what you would do differently next time

    5. Title: Soap Bubbles Problem: Which brand of dishwashing soap makes the biggest bubble? Brands: Palmolive Ajax Dawn

    6. Hypothesis: If… then…because… If I blow bubbles using dish soap, then I predict that _______ soap will blow the biggest bubble because__________

    7. Independent Variable (you change) – brand of dish soap Dependent Variable (what you measure) – diameter of bubble in cm *Diameter – the length of a straight line passing through the center of a circle and connecting two points on the circumference

    8. 3 different brands of dish soap Water Straw Ruler (cm)

    9. Prepare the table surface by wetting it the bubble solution. Dip a straw into the bubble solution and blow a bubble onto the wet surface. Practice blowing bubbles until you can blow a large bubble without it popping. Blow a bubble until it pops. The popped bubble will leave a ring on the table. Measure the diameter of the bubble in cm. Record your data. Repeat 4 times. Repeat steps 1 – 7 with each brand of dishwashing soap.

    11.

    12. Explain how your hypothesis was supported/not supported by the data from your experiment My hypothesis was not supported. I predicted that the __________ dish soap bubble would create the largest diameter but it did not. _(dish soap brand)__bubble was ______ cm and __(dish soap brand)____ bubble was ________ cm. My hypothesis was supported. I predicted that _(dish soap brand)__ bubble would create the biggest diameter. I was right, _(dish soap brand)__ bubble was _____ cm while _(dish soap brand)__ was _______ cm and _(dish soap brand)__ was ________ cm. Identify any possible errors or factors that could have affected your experiment Discuss what you might do differently next time and what other related experiments you would want to do.

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