 Maybe you already noticed that there are sharks both on stage and also in the stream. The next talk is by our Explanation Shark. The Explanation Shark will show interesting things to you again and again in the following days. If you would prefer to listen to this in English, then you are in luck, you already found it. This talk is translated to you by B from C3lingo. You're welcome. If you get feedback for us, please use the hashtag C3lingo. Now we will start with part one. Explanation Shark grows crystals. Okay. Under Explanation Shark, I was already visible in the opening. I'm supposed to do a bit of science and do an experiment. That's what I want to do for these days and some of these might take longer. It's not something you can show off in just an hour. Those are experiments that take a few days to develop. That's why I will start the experiment today and tomorrow we will be able to see the progress. Hopefully on day four the experiment will be finished and I can then show the final result. So the experimentation box is the wonderful crystal world and now the basics on how it works. So the best example for crystals are usually salt crystals, not metal crystals. Also metals can build crystals, but we are talking about salt crystals. Whoever has this hand warmer at home, it's also a salt crystal solution. So there is water in it and salt in solution and whenever you have a crystallization core it the whole thing crystallizes and because of the reaction it radiates heat. Very nice in winter and when you heat it up the crystal becomes liquid again and you can reuse it. But let's start with the interesting things, the fascinating things. So what do we have here? There is calium aluminium sulfate with a complex formula. But yeah we already noticed there's a lot of water in there. This substance was used for coloring, yeah to color cloth nowadays. It's used to reduce bleeding when you shave, not in Germany and it's also used in deodorants and it's also allowed as E522 in food for stabilization. So in this very nice box there are five bags of this salt, then two mixing rods and that's important and like every good experiment you first place everything in the open so you can grab it when you need it, then a bit of color in turquoise, pincers and a piece of string that we might want to use. Whoever wants to grow crystals at home you can just use sugar, dissolve it in water, then put in a piece of string and it will crystallize. If you want to do that experiment at home just use sugar, okay. What else is in there? Sorry my camera person talks to me, camera child. There are two bowls for decoration, then there is something that's copyrighted but I will explain exactly what's written there, there are guidance and instructions, then there's a measuring cup, a small diner that we will start with and more color. Those colorful rolls are just paper bands, they are very nice if you want to color something. If you have some white pop mache and you want to color it just use this and it will color the pop mache or paper mache. So we of course keep everything tidy and now there's nice instructions. First of all we use around 110 milliliters of water. We encourage distilled water because normal water has salts and we want only our salts, we don't want to mix it with random salts from the water. So we now have this cup with a missing mark, so that's 110 milliliters and big bottles are removed from the workplace, always. So this should work, I want my dinosaur in green because I think they were green. So I take a piece of this and I put it in here. So this is adhesive tape or crepe tape, masking tape and it should, the water should now remove the color from the paper, it just takes a few seconds and the water turns green. So if you need green water at home to scare people, you can easily make it, you take out the paper of course. Now I have beautiful green water and now it's just 90 milliliters. And if it's small, remove that because I don't have a sink on my stage here, I have glasses. As you can see, it's around three because these experiments are subjected to some variation it should work. So now I have the green glass because it's for the green dinosaur and I put this freshly colored water in here. Next I'm supposed to put a whole bag of this Kali aluminum sulfate and put it all in here. Need scissors, I can't get scissors. This translation of non-verbal communication is also provided to you. Okay, something that resembles scissors. And pliers on a hot plate, I'm carefully cutting the bag otherwise and I take care that all of it is at the bottom of the bag, otherwise it might hurt the experiment. I carefully put the salt in the glass, I stir it carefully, at the same time I try to boil some water and now I will warm it up in this pot with normal tap water. I will just heat it up, I won't boil it. The principle in a water bath is, so the principle is the same as when melting chocolate. If I were to put it directly on the plate, on the hot plate, the glass would break and it would be a huge mess. Now I'm waiting and you see at the bottom there are still some crystals undissolved and I'm just waiting for it to dissolve. If you want to repeat that with your kids, please stay with your kids and the instructions it also says on the back a whole page or a whole lot of information for the parents what they should keep in mind. But I already read it so I don't have to read that out loud but yeah you should always keep an eye on your kids. But because all of this is also allowed in food it's not poisonous, well not in small doses. Okay, it still needs some time so I'll leave it here and get started with a stone that I want to grow because I want to grow a crystal in blue this time because I like blue stones and I am keeping red for something else. So we take a bit of this tape and use the scissors on a folding knife for this and again we take a bit of distilled water. You can get that in every drugstore usually for ironing supplies because you use it for ironing. For a steam iron it uses distilled water as well and because we are very scientific I didn't just use too much I also don't put it back because with chemical experiments you don't do that. In general never put anything back from a storage vessel if you took enough too much. Because there might be some residue in your next glass and that might contaminate your storage vessel. So is it dissolved now? You can see there is still a lot of salt that's still in crystal form and I try to dissolve it by gently stirring it. But we got started on the blue paper. Okay, new color, new stick, I don't want to mix the colors. So if you want to create something like watercolors this works great. So now I have blue water and again a bit too much. So now it's more like 90 milliliters and I take a freshly cleaned glass. This is where I want to grow the crystal. Now I put the blue water in here, take the next back, carefully put everything in the back into the glass, clean up the empty bag because it's not needed anymore. Use this nice stick that I prepared specifically for this purpose, stir it a little. And once the green liquid is done in the pot I will put this in next to it, oh no it all fits in at once, perfect. Because it's not fast enough for my taste, I have to put it over here. So I have changed my setup, okay I had to rebuild my setup. That's because I didn't prepare it properly, okay. So these two experiments are done for now, I have to tidy up a bit and can already say I would immediately start with the next one, crystal unicorns, growing crystal unicorns. And I just hope that these will dissolve. As soon as it dissolved, so the salts dissolved into the liquid, I will take this glass and put it in the prepared dinosaur and close it. And similarly the other glass I will put here, maybe I will publish a few photos on our account how the crystals grew. We will document everything and provide documentation of course, I will need this in a bit because now is the best thing, the next kit works differently, which is why I will wear gloves now because the substance that's in here is toxic. I would, it's 3 grams per kilogram, if I check my weight I would have to eat a lot of it but to protect myself I brought gloves. Here we are growing unicorns, not just dinosaurs, we thought they fit together quite well. You always take everything out first, including the instructions. I think I found the mistake why this is not working as intended but I think we would have to take a break to fix it and so I think we have a small electronic problem with a heating block. But I'll start this experiment first and then we'll try to fix it. The electronic heating plate might be broken. Yes, something can always go wrong. I prepared the instructions, so I'm prepared and it's very nicely done for kids and included are four patterns for unicorns, four very pretty unicorns, a little bit of filter paper that just takes in liquid and moves it along. All of you know it from school and the kids who are listening, you will have the experiment when you put your adding on the filter paper and then you can see how the color dissipates and it moves and it changes along the way. Here we have a green one, another one in green, two inner parts that just fall apart and two pair of white ones each. Because I worked with green and blue, I will continue to use green and blue and I put away the aluminum sulfate, take the two dishes and set up the filter paper as it's supposed to be very carefully as per the instructions, I allowed myself to read them before the show because you want to be prepared like this. Here we have a nice little tree, it's better to see like this. This is now put in an opening, created especially for it. So there is these half Petri dishes with these crosses in the middle, you can see it like this, so you can put the trees in there. It's a bit fiddly, which of the unicorn fits the green crystal? So on the outside there's the coloring that will color the crystal. I think the rainbow unicorn perfectly works with green, so I will put it on like this, like this and now the exciting part, there's the liquid in here. As said, it's toxic, it's 3,020 milligrams per kilogram of body weight if you eat it. In this bag there's 20 grams, if you can calculate in your head, all the better for you. You can already see, I'll try to make it visible to you, there is a small crystal in there. I will not put it in, it's the same as in this bag, the crystal in the metal or the small metal plate that you can't see as well, you just see the black point, that's just the starter crystal. This liquid is called magic water, but it's calium dihydrogen phosphate, H2PO4, one potassium, then hydrogen, some oxygen. So it's basic, it's acidic, so I can also do a pH test and it's used as an acidity regulator in food, especially when working with liquid. So it's E340, that's the name if you put it in food. So if you have food with the liquid E340 that's the same stuff that I only touch with gloves. So I put it in here and then we hope that in the next days this liquid, it will rise up through the filter paper and on the borders of the filter paper it will crystallize and hopefully cover the whole unicorn and I will prepare two horns and in the next days we can observe what happens with it, how it develops. So now I'll try put in the liquid first and then the filter paper. I take care of the stone or the crystal because in the instruction it also says that afterwards you can create the liquid yourself if you dissolve the crystal in water. So basically the same thing as in the hand warmer, you just put it in here, if it's liquid it has a better hold, yellow on blue, it's a blue unicorn and we'll just continue with another experiment. So we are done with this and tomorrow we can check how far the unicorns got.