Penny lab

The penny lab was an experiment that we did in science class to practice hypothisising and doing the experiment. For this experiment you need a eye dropper, a penny, and water. This experiment was simple all I had to do is make an educated guess on how many drops of water could fit on a penny before it over flows. I guessed that the penny could hold seven drops of water because water ussaly expands takeing up space and a penny isn't even a inch long and a centemeter thick. But to my supprise when i did try the experiment the most water dropplets I got on the penny was thirteen. I think this was because water bonds with other water molicules and it has a sticky substance that allows it to some what cling onto the penny. So all in all this was a fun learning experiment for me and I would have never guessed that a penny could hold more than seven drops of water.