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why does bleach change the color of clothes

The other two answers are correct, but I wanted to answer a question that you
almost asked. Your question was how does bleach remove color? A similar question, with a really cool answer is how does bleach make my white clothes look brighter? Bleach contains molecules called optical brighteners. These molecules absorb light in the ultraviolet range of the EM spectrum (which you can t see) and re-emit that light in the visible spectrum (which you can see). This is called fluorescence. Anyways, it s pretty cool because if you see someone wearing a nice, new white shirt you might think Man, their shirt is so bright it looks like it s making light. Well guess what, it is making light. It s converting the sun s UV light to visible light which is what makes a white shirt look so bright.

This same absorption of UV light and emission of visible light is also why white shirts (and teeth) glow under a black light. Laundry detergents and toothpastes have optical brighteners in them to whiten your clothes and teeth. People bleach their clothes. People with dark who want lighter hair may bleach their hair. Some people even bleach their to give themselves a sparkling white smile. If you've ever accidentally spilled bleach on dark clothes, you know what happens. They're not so dark anymore! But why is that? What is it about bleach that makes colors less colorful? Although we use the term bleach as if it was only one, there are actually several different types of bleach. The most popular is common household bleach, which is a water-based product that contains a called sodium hypochlorite.

Another popular type of bleach is bleach, which contains hydrogen peroxide or other compounds that release peroxide when mixed with water. Bleach also comes as a in the form of a called hypochlorite. All of these bleaches can be used to. They also make good cleaning, since they kill, and. A of bleach and water is often used to clean and hard surfaces in kitchens and bathrooms, for example. Even though early man didn't understand the science behind bleach, the bleaching process has been around for thousands of years. To understand how bleach removes color, it is helpful to understand a bit about how colors work. compounds Б called chromophores Б cause colors by reflecting a certain portion of the of light.

For example, a blue dress contains chromophores that reflect blue light that our eyes see as the color blue. Bleach works by releasing molecules in a process called. The molecules released by bleach break up the bonds of chromophores. The changed molecules either reflect no color or a color outside the. This absence of color is seen by our eyes as white. You may have also noticed that fabrics left out in the sun will look faded or bleached over time. Does sunlight have bleach in it? Nope! But sunlight can work like bleach. High energy ultraviolet sunlight can disrupt the bonds in chromophores, causing them to lose their color much like the process with bleach.

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