Being a coffee lover means I have plenty of chances to spill it on my shirt. Coffee stains are hard to get rid of. Sometimes I can, but sometimes I can’t. My toddler asked me how tough food stains could be handled if it couldn’t be washed off. So I decided to do a science experiment with her to show her — disappearing food colors.
What you need:
- glasses or jars
- food with color or food coloring
- Fill up the glasses with water.
- Dissolve the food or food coloring in the water. We used ketchup and coffee.
- Mix it up to make sure the food or coloring is well blended.
- Start adding drops of bleach and watch the color disappear.
We started with ketchup. As we added more bleach, the glass of liquid turned from orange to white. It was fascinating to my daughter.
Next, we tried coffee.
Coffee was a little harder. Not only did we have to constantly stir to mix up the bleach and the coffee thoroughly, but we also had to add a lot of bleach to turn it into a white solution. At the end, you can see the coffee mixture’s level is higher than the ketchup solutions’. That explains why coffee stains are usually harder to get rid of than other food stains.
The Science Behind
Bleach works by oxidization. It breaks down the color molecules (chromophore) inside the food and turns them into colorless or invisible molecules!
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