 Welcome back to Kids Fun Science. My name is Ken. Today's experiment is the rubbing alcohol styrofoam powered boats. What you need for this experiment is rubbing alcohol, a pipette or an eyedropper, a rain gutter, or if you don't have that a long pan or dish, a soap proof foam lunch plate. A dish soap is optional if you're going to do the soap boats and water. So here's the information from the journal chemistry of education in the link and you get more information there. All right, welcome back to Kids Fun Science. So I've got a gutter. I got a local Home Depot Lowe's gutter, two ends. It's going to hold the water in. Fill it up with water, as you can see. It doesn't have to be all the way full. And what we're going to do is you guys have seen, I'm sure you've seen, if not, it's in the description. Here goes my cat, little cameo. I'm sure you've seen the soap boats where you make a little boat like this out of a styrofoam plate. And then you put soap on it and it'll shoot and go. But we're going to do a little bit different here. We're going to use rubbing alcohol. And so we're going to see how it can go maybe to full distance and how fast. And then we'll compare it against the soap boat to see how far it goes too. So I hope you enjoyed this and remember to leave comments below and to subscribe as I do a new video every week. So I realized I got a white gutter and I have a white boat. So you won't be able to see it. So what I did is for the purposes, so we were able to see the experiment. I've actually colored it with a Sharpie. It's two layers and I'll show you how to make that in a second if you don't know how. And so what we're going to do is set up the experiment and then we're going to try it out. Here's the dimensions for the boat I use. There's actually two pieces. There's one solid and one cut out like that. Then you just glue it either with a glue stick or some kind of glue together. So here's our first experiment with the rubbing alcohol. You put the styrofoam boat in right there, put the rubbing alcohol in and off to the races. So here we go. We have a five foot, 1.52 meter gutter. There it's done. I'm just turning it around. No extra fuel and it keeps going. Now of course it was about eight seconds the first time and it looks like the second time is going to be about 19 seconds as I've already done the time on it. But it's still going to keep going which is pretty cool. So it gets there, there's your 19 seconds. I turn it around and it still has fuel. It's still going and it's still going to pump through. Now I'm going to kick it into fast motion here because you don't want to sit around and watch the boat go but it does take a very long time. 35 seconds this time to go five feet but it's not done so I turn it around and it gets a little bit more of a burst and I don't think it's going to have enough to make it a fourth time and it actually is going to come to an end about right here which was about 18 feet. So it was about 5.49 meters which is pretty far for one shot of rubbing alcohol. The cool thing is you can continue to do this unlike the soap boats. Keep putting the rubbing alcohol on it and the boat will continue to go. So you don't have to change the water where with the soap boats once you're done you have to change the water out every time so that's interesting. So here we are we're going to do the soap boat. This time I'm actually going to fill the soap in on the first top part of it but I'm going to flip the boat over so all the fuel of the soap can break down the service tension and take off. So it will be upside down this time but it will help. So we start off with the soap it starts off a little slow but it starts to take off right there. If you see all that soap is breaking down the service tension and really getting it to go I thought it went a lot farther than I thought but it still took 17 seconds compared to 8 seconds and it didn't make it all the way but it wasn't done so when I turned it around it still had a little bit more to go which really surprised me because usually you know I had to turn around a couple times but usually once the soap's in the water and it breaks that service tension down it does not go any farther so maybe because I had so much more water inside the gutter but it kept going and it couldn't quite make it two times so it was about half the distance so it went eight and a half feet instead of 18 a little under two and a half so but that was pretty cool. Now here's the part that doesn't work I reloaded it up with soap put it in the water and it will not go anywhere because the surface tension is broken down same with the the rubbing alcohol I put it on with the soapy water and it doesn't go so here's what it looks like against the side of the wall you put the rubbing alcohol in and you can see it really jet out as it's pushing the water that's how it gets to go so quick and it's a pretty cool visual right there. Well I hope you enjoyed this experiment with the rubbing alcohol in boats it's a really fun one it always is fun to always see that some kind of fluids or waters always are the best experiments so as you saw in the video I was about three times I went a little over three and a half times I went back and forth which is about 18 feet so if you have a longer gutter give it a try let me know how far you get to go with your rubbing alcohol and a boat or give it a try with your your soap boats and see that soap boat almost made it one and a half times a little farther but give it a try remember to like and subscribe and thanks for watching