Do you like playing with bubbles? Almost every kid loves to blow bubbles – and wishes that their bubbles don’t pop or evaporate so quickly! This science fair project was performed to determine if adding other substances to a bubble solution can help the bubbles last longer. Testing was done by adding corn syrup, sugar water, glycerin and lemon juice the to the bubble solution.
1. For this science fair project, the independent variable is the additive added to the bubble solution – soap, corn syrup, glycerin, sugar and lemon. The dependent variable is the length of time the soap bubbles are able to last before bursting. This is measured with a stopwatch. The constants (control variables) are the room temperature and the mixing ratio of the bubble solution. 2. Using the black marker pen, the 5 plastic cups are labeled as “soap”, “corn syrup”, “glycerin”, “sugar” and “lemon”. 3. Each cup is filled with 100ml of water. Another 20ml of liquid detergent is added .....
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