Adult assistance is required when handling bleach. When handling the bleach, be sure to read and follow all safety precautions listed on the container.Ultraviolet "black light" bulb (This can be purchased at a party supply store or some hardware stores.).Part of why we find things that glow under ultraviolet lights-such as some minerals, fish and tonic water-to be fascinating is because we cannot see the (ultraviolet) light they absorb but can see the visible light they emit (which is blue in the case of quinine). In general, something fluoresces because it has absorbed light energy, which makes it excited, and then it releases (or emits) light as it returns to its normal, unexcited state. Under an ultraviolet "black light," the quinine in tonic water makes the water fluoresce a brilliant, bright blue (even though only a relatively small amount of quinine is dissolved in the water). Quinine not only gives tonic water a characteristic bitter taste (which is offset today by the addition of sweeteners to bottled tonic water) but this chemical can also be very fluorescent under the right conditions. Quinine is made from the bark of a tree and has been used for centuries as a treatment for malaria. Tonic water is a carbonated beverage that has a chemical called quinine dissolved in it. How will adding bleach affect the tonic water’s glow? Try this activity to find out! In this activity you'll make tonic water glow by using a black light and then you'll add a little bleach to the water. I hope you enjoyed the experiment.Have you ever wondered how glow-in-the-dark things work? It can be a lot of fun to play with bracelets, wands and other toys that are glow-in-the-dark! Did you ever imagine that you could make something at home that glows? It turns out that it's not that hard to do-all you need is tonic water and a black light! Some common household chemicals can also affect this beverage's glow. Your teeth and fingernails also contain phosphors so they will also glow in UV light! When you shine a UV light on phosphors, the phosphors become “excited” and glow. Phosphors are substances that emit light (or luminesce) when exposed to radiation like UV light. This is because highlighter dye and a chemical found in tonic water called quinine contain something called phosphors. The bottle with water and highlighter dye and the bottle with tonic water do glow when placed near a black light. The bottle with regular tap water does not glow when placed near a black light. Glowing Water Science Experiment Step by Step Instructional Video How Does the Science Experiment Work Do any of them glow? Do you know why? Find out the answer in the how does this experiment work section below. Step 6 – Turn on the black light and observe the three bottles. Step 5 – Position the black light behind the bottles. Sir the water to mix in the ink and then pour it into the first bottle. Step 4 – Take the water with the highlighter ink in it that you prepared in step one. Do this by filling the third bottle with regular tap water. Step 3 – Prepare the water for the third bottle. Helpful Tip: If you buy tonic water that is already is a clear glass jar, you can just use that. Do this by filling the second bottle with tonic water. Step 2 – Prepare the water for the second bottle. To do so, pull the back off a highlighter and drop the ink into a cup of water. Step 1 – Prepare the water for the first bottle. Glowing Water Science Experiment Instructions JUMP TO SECTION: Instructions | Video Tutorial | How it Works Supplies Needed Explore phosphors and have fun while learning! Do you have any predictions? With three bottles of water, one bottle filled with water mixed with highlighter dye, one bottle filled with tonic water, and one bottle filled with regular tap water, which ones do you think will glow?īorrow a black light, get your supplies together, and give this simple and fun science experiment a try! We have a supplies list, printable instructions as well as a demonstration video with experiment explanation below.
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