 Welcome back to Kids Fun Science. My name is Ken. Today's experiment is why is mustard yellow? As always, adult supervision is required. What you need for this experiment is mustard, ammonia, a pipette, or an eyedropper, a clear plastic cup, and vinegar. A couple safety precautions. Perform this experiment under adult supervision where safety goggles, ammonia is poisonous. Do not eat the mustard after adding ammonia. Do not hail ammonia and do this in a well ventilated area. All right, so this experiment you need some yellow mustard, some vinegar, some ammonia, and a clear plastic cup, and then either an eyedropper or a couple pipettes that I'm using. So we'll clear this out of the way, and then we're going to pour a little bit of the mustard into the clear cup. Now the mount is not crucial. You just kind of want to cover the bottom a little bit or go a little bit higher as I am. It's probably a little bit better to go a little less as you'll see the second time around when I'm explaining the science behind it. So once we get that there and we're ready to go, we are going to take our ammonia, and we're going to fill up the pipette, and we're going to put it in. We're going to probably do this multiple times. So we'll go ahead and get some ammonia and make sure you're in a well ventilated area and you have your safety goggles on and pour that in. We're probably going to do this two or three different times. So we'll get that in there. There is one. We're going to do a second one and I pull a little bit closer so you can see it's starting to turn color. It's an orangish color right now. We're going to add a little bit more. You can do it by drop or just kind of add a little bit in. Since I have extra mustard, I have to do a little bit more ammonia to get this in. So I'm going to mix it around a little bit to make sure it starts to change color. Get a little bit of shake and you can see it's starting to change color. There it is and it's a reddish color right now. So it did change color by adding that. So now I'm getting ready. We're going to switch over and grab. I've grabbed a different pipette and we're going to use the vinegar this time and we get the vinegar into the pipette and we start pouring it in and you can see it's starting to turn it back to yellow, which is pretty cool. So the mustard is going back to its original state. We'll give it a swirl around and there we got it. It's pretty much over all. Shake it a little more. It turned all the way back to yellow so pretty cool. So now I need to tell you the science behind it. So I'm going to do it one more time and explain the science behind it from a top view. So the science behind this is not that many people are aware that mustard is yellow due to an additive, right? So if you read the ingredients on the label of the mustard container, it will list a turmeric as the ingredients and turmeric is delivered from a root plant that is in the East Indies and it's used to dye mustard yellow. It is also an excellent base indicator, so turning red and orange in the presence of a base. So since ammonia is a base, mustard therefore will turn red or reddish orange when ammonia is added. When vinegar is added, the ammonia is neutralized and the turmeric will return to its original yellow color. Turmeric is also used to impart the yellow color or golden paper which has also turned red when ammonia or other base solutions are added. So remember when you're done with the experiment to flush the mustard down the sink as you do not want to use this because ammonia was in it and it is a poison. I hope you enjoyed this video. Remember to click thumbs up and to subscribe. Thanks for watching.