Penny Lab

Penny Lab Experiment By -Objectives To determine how easy lay affects the surface focus of pissing. -Hypothesis In this experiment the hypothesis was that soap was pass to affect the surface focus by weakening the bonds and allowing less piddle on the penny. -Materials * Penny * Beaker x2 (One containing soapy water the other containing pure tap) * constitution towels * Lab review sheet * Pencil * Pipette -Procedure world-class we picked who would beadwork the water onto the penny. We did this to ensure that the drops were even in size.We then carefully dropped water from the dropper onto the head side of the penny while counting the weigh of drops. -Data Trial 1 Trial 2 Trial 3 median(a) Tap weewee 37 drops 32 drops 44 drops 37 drops unctuous Water 16 drops 14 drops 10 drops 13 drops -Calculations Tap Water (37+32+44)/ 3= 37 Soapy Water- (16+14+10)/3=13 -Conclusion In this experiment we confirmed the hypothesis that soap affects water by lowering surface tension thus lowering the do that evoke fit on a penny. -Post Lab 5.Explain what surface tension is/ turn up tension is waters ability to stick to itself. 6. Why were some(prenominal) trials taken and averaged? / To get better and more accurate responses. 7. In this experiment, what was your figure group? / The plain tap water. 8. Identify the independent vari adapted in the experiment. / The soap in the water. 9. Identify the dependent variable in the experiment. / The amount of drops that would fit on the penny. 10. What if the question was how does ice lolly affect surface tension of water?Using the scientific method answer how you would answer this question. First we would make an observation about how waters surface tension could be affected. Next we would propose a hypothesis. Like if we add sugar to water the waters surface tension will be greater. Then we would follow the steps of the experiment performed earlier. We would then be able to prove or disprove the hypothesis we created . Then we would draw conclusions base on our results.