If you do not see a change in the tonic water, try adding and mixing in a few more drops of bleach.What happens when the bleach is added to the tonic? What happens after the bleach is mixed in with it? Carefully mix the bleach in with the tonic. While still shining the black light on the cup of tonic water, use the medicine dropper to carefully add two drops of bleach to the tonic water.What happens to the tonic water in the cup when the black light shines on it? In a darkened room turn on the ultraviolet black light and shine it on the cup.Pour about one cup of tonic water into a clear plastic, disposable cup.
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. 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.
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